Entries |
Document | Title | Date |
20080202601 | Injection Valve of High Pressure Homogenizer and Injection Valve Unit of the Same - A high pressure homogenizer segmentalizes material made of minute solid or the like by passing suspension liquid including the material to a small diameter orifice at high speed under high pressure. An injection valve of the high pressure homogenizer includes: a fixed member having a material introducing passage therein; and a movable member disposed rotatably, swingably, or pulsatingly opposite to the fixed member in an axial direction of the fixed member. The orifice of the injection valve is made of a fine gap in a radial direction disposed between an end face of the fixed member facing an end of the material introducing passage and an end face of the movable member disposed at an end of the movable member opposed to the fixed member. The orifice communicates with a material processing passage via a ring-shaped collision wall. | 08-28-2008 |
20080236679 | SYSTEMS AND PROCESSES FOR FIELD-INITIATED FLUID REGULATION TESTING - Systems and processes may provide field-initiated testing and/or control of fluid regulatory systems. In one aspect, a fluid regulatory testing system may include a field test initiator and a fluid regulator control system. The field test initiator may alter control signal delivered to the fluid regulator control system upon activation of a user input device. The fluid regulator control system may receive control signals from the field test initiator and generate fluid regulator control signals. The fluid regulator control system may also detect whether a control signal has been altered, and initiate a fluid regulator testing sequence, if the control signal has been altered. The fluid regulator control system may include a latch mode. When a latch mode is commenced, generation of fluid regulator control signals based on received control signals and/or alteration of a position of a fluid regulator may be inhibited. | 10-02-2008 |
20080245422 | Wireless power transfer device for a fluid delivery apparatus - A fluid delivery apparatus includes a fluid outlet located on a first side of a barrier and at least one electrically powered component located on a second side of the barrier. The apparatus also includes a wireless power transfer device to supply power to the electrically powered component. | 10-09-2008 |
20080257422 | Electro-Hydraulic Control Device, Valve and Activating Electronics - An electro-hydraulic control device is equipped with a valve and with activating electronics for the electrical activation of the valve as a function of a control signal. A sensor component or actuator component which is held on the valve, is connected to the activating electronics by means of an electrical connecting line. A non-volatile data memory is arranged on or in the sensor component or the actuator component, and the data of the data memory can be read out via the electrical connecting line. | 10-23-2008 |
20090000672 | Redundant Electrohydraulic Valve System - The invention relates to an electrohydraulic valve system comprising a feeding duct (P), a working duct (A), and a discharge duct (T), a first and a second valve mechanism ( | 01-01-2009 |
20090000673 | Electronically controlled pressure regulator for a mechanical returnless fuel system - A pressure regulator as part of a vehicle fuel pump module may lie within a pressure regulator case, be powered by a battery and controlled by a controller. The pressure regulator may employ a spring secured by a spring holder and held within a pressure regulator spring case. A sealing pressure plate sub-assembly may have a ball element at the top and both may pass through the spring and spring holder and contact a solenoid plunger of a solenoid that is located at an end of the spring case. When the controller activates the solenoid, the solenoid plunger moves and contacts the pressure plate sub-assembly to effect temporary stoppage of the flow of fuel to jet pumps and to a reservoir. The solenoid case may have a diameter equal to, less than, or greater than the diameter of the pressure regulator spring case. | 01-01-2009 |
20090078324 | GAS-PANEL SYSTEM - The invention involves the introduction of a gas-flow restrictor and reservoir upstream of a mass flow controller (MFC) in a gas-panel stick. The restrictor and reservoir components function to smooth out pressure spikes in the gas line, thus preventing gas-flow irregularities that can occur in an MFC or pressure-insensitive MFC. The restrictor and reservoir components can be integrated into the MFC. | 03-26-2009 |
20090183786 | Displacement Control Valve - The present invention comprising a valve main body having a first valve chamber, a second valve chamber and a third valve chamber, said first valve chamber communicating with a first communication passage, said second valve chamber having a second valve seat face for a valve hole and communicating with a second communication passage, said third valve chamber having a third valve seat face and communicating with a third communication passage; a valve body having a first valve member, a second valve member and a third valve member, said second valve member having a intermediate communication passage therein communicating with said first valve chamber and said third communication passage, said second valve member opening and closing a valve hole with respect to second valve seat face, thereby communicating with said first valve chamber and said second valve chamber, said third valve member performing a valve opening/closing action with respect to said third valve seat face in an reverse manner against said second valve member, thereby opening or closing the communication with said intermediate communication passage and said third communication passage, said first valve member performing a valve opening/closing action in the same direction to said second valve member; a pressure sensing member having a valve seat portion, said valve seat portion being disposed at a free end of said pressure sensing member, said valve seat portion performing a valve opening/closing action with respect to said first valve member, thereby opening or closing the communication with said first valve chamber and said intermediate communication passage; and a solenoid member driving said valve body in accordance with an electric current supplied thereto; and an auxiliary communication passage providing a communication between said first valve chamber and said intermediate communication passage. | 07-23-2009 |
20090235992 | Method and apparatus for detecting water system leaks and preventing excessive water usage - A method and apparatus for detecting water system leaks and preventing excessive water usage by water systems in residential and commercial buildings provides a processor-controller, a user interface for programming the processor-controller with preselected controller output criteria, and a water meter located in a water line within the building. The water meter provides a waterflow input signal to the processor-controller and closes a water line valve if the water usage calculated by the processor-controller satisfies the preselected controller output criteria. The present invention will activate a water-saving hot water for use in conjunction with a water heater in response to a user-entered occupancy schedule stored in the processor-controller. The present invention will monitor and contain water heater leaks and, in the event of substantial water leakage, will close valves in the water heater lines to prevent water losses into the building. | 09-24-2009 |
20090272442 | FLUID FLOW CONTROL DEVICE - A fluid flow control device such as a volume booster has an inlet, an outlet and an exhaust port all for an operating fluid. A pilot inlet receives a pilot pressure signal which operates a valve stem actuator via a diaphragm assembly. The valve stem is operable to open a supply valve between the inlet and outlet and, separately and independently, to open an exhaust valve disposed between the outlet and the exhaust. In a further position both the valves are closed. Movement of the stem in a reciprocal manner by the diaphragm assembly causes a respective annular shoulder to engage a respective valve and lift it off a valve seat against the force of a biasing spring. A first fluid leak path is provided between the valve stem and the supply valve for allowing fluid to leak through the supply valve chamber when the supply valve is open and a second fluid leak path is defined by the exhaust valve for allowing fluid to leak through the exhaust valve chamber. The leak paths provide for a force balancing arrangement that allows the valve stem to move easily and the diaphragm assembly to be reduced in size. The arrangement allows the exhaust port to be positioned on the same side of the diaphragm assembly as the inlet and outlet so that fluid can be vented through the exhaust at flow volume comparative to the operating fluid flow in the inlet and outlet. | 11-05-2009 |
20090283155 | Fluid control system - The fluid control system according to the present invention is characterized by being provided with a fluid control valve controlling a pressure of a fluid by a pressure operation of a control fluid, a flow rate measuring device measuring a flow rate of the fluid, converting a measurement value of said flow rate to an electrical signal, and outputting it, and a control part outputting a command signal for controlling an opening area of said fluid control valve to said fluid control valve or equipment operating said fluid control valve based on a difference of said electrical signal from said flow rate measuring device and a set flow rate. | 11-19-2009 |
20090301578 | Valve in particular a proportional pressure relief valve - The invention relates to a valve, in particular, a proportional pressure relief valve, comprising an electrically controlled solenoid system ( | 12-10-2009 |
20100000615 | LEAK DETECTION AND SHUTOFF SYSTEM - An automatic leak detection and shutoff system for plumbing systems that detects a flow of water that endures longer than a user sets as normal, and shuts off the flow of water when it detects that water has flowed too long. Water flow can be restored by pressing a reset button. | 01-07-2010 |
20100018592 | Fluid control system for precisely controlling a flow of fluid - A fluid flow control system for precisely controlling fluid flow from a source of fluid under pressure. A flow path for coupling said source of fluid to a point of utilization includes a valve and a flow restrictor. A pressure transducer is connected across the flow restrictor for measuring the pressure differential thereacross and producing a signal proportional to the pressure differential, and a controller is connected to receive said signal and pulse said valve at a frequency to obtain a preset target value of pressure across said flow restrictor. A system of mixing two or more fluid streams comprising in combination one or more flow control systems are defined above and a mixer coupled to each of said fluids is coupled to the point of utilization. | 01-28-2010 |
20100154899 | PRESSURE CONTROL DEVICE - In a pressure controller, a drive piston and pressure control valve are freely movably supported in a housing, the drive piston is supported by being energized and the pressure control valve is supported by being energized to make a pressure chamber and a decompression chamber communicatively connectible, the drive piston and the pressure control valve are moved by an electromagnetic force of a solenoid via a ring piston to make a hyperbaric chamber and the pressure chamber communicatively connectible and also an external piston is freely movably provided facing the drive piston and by making a control pressure acting on the external piston from a rear pressure chamber on a drive piston side equal to or greater than an external pressure acting from outside from an input unit, pressure control can properly be performed by readily moving a drive valve by pressure from outside when a power supply is defective. | 06-24-2010 |
20100170582 | GAS SHUTOFF DEVICE - An object is to prevent a mistaken shutoff caused by the mistaken registration of an appliance of which an amount of gas used changes. An individual flow registration maintenance unit maintains a registered flow rate deleted due to an increase/decrease in flow rate, again, performs determination on the flow rate maintained when a new flow rate is registered or a flow rate added with the maintained flow rate, and in the case where it is regarded to be the same, re-register the maintained flow rate. | 07-08-2010 |
20100236643 | System and Method for Flow Monitoring and Control - One embodiment of the present invention can include a flow control device that comprises an inlet, an outlet in fluid communication with the inlet, a pressure sensor, which may or may not be the only pressure sensor of the fluid control device, and a controller coupled to the pressure sensor. The controller can be configured to generate a valve control signal based on a measured pressure at a single pressure sensor. | 09-23-2010 |
20100236644 | Methods of Operating Microvalve Assemblies and Related Structures and Related Devices - A valve assembly may include a main housing and first and second electro-statically actuated valves. The main housing may define at least three chambers, with a first chamber configured to be coupled to a high pressure supply port, a second chamber configured to be coupled to an output port, and a third chamber configured to be coupled to a low pressure exhaust port. The first electro-statically actuated valve may be provided between the first and second chambers, and the first electro-statically actuated valve may allow or substantially block fluid communication between the first chamber and the second chamber responsive to a first electrical signal. The second electro-statically actuated valve may be provided between the second and third chambers, and the second electro-statically actuated valve may allow or substantially block fluid communication between the second chamber and the third chamber responsive to a second electrical signal. Related methods are also discussed. | 09-23-2010 |
20100269920 | Methods and apparatuses for complementary pneumatic devices and circuits - The RABBAT ELECTRIC HYBRID VEHICLES have no mechanical transmission of power, only ductile wires connecting various sections of the car. | 10-28-2010 |
20100269921 | VALVE ASSEMBLY FOR HIGH-PRESSURE FLUID RESERVOIR - A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value. | 10-28-2010 |
20100269922 | FLOW RATE CONTROL DEVICE - A flow rate control device includes: a fuel gas supply channel having a flow rate adjusting valve; a thermal type mass flow rate sensor arranged in the supply channel; a calculation unit which calculates a thermal quantity flow rate of the fuel gas defined by a product of a volume flow rate of the fuel gas and a heat generation quantity per unit volume of the fuel gas according to an output from the thermal type sensor; and a flow rate control unit which controls the open degree of the flow rate adjusting valve according to a difference between a control target value for controlling the thermal quantity flow rate and the thermal quantity flow rate calculated by the calculation unit. | 10-28-2010 |
20100276012 | ELECTROMAGNETIC PILOT OPENING/CLOSING VALVE - An electromagnetic pilot opening/closing valve includes: a valve main body member that includes a sliding hole; a main valve body that is slidably provided in the sliding hole; a movable iron core; and a fixed iron core. The main valve body includes a second sliding hole. A pilot valve body is provided in the second sliding hole. The movable iron core and the pilot valve body are designed to slidably engage with each other, and the movable iron core and the main valve body are designed to slidably engage with each other with a play therebetween. When the movable iron core is attracted by the fixed iron core by energization of the coil, the movable iron core causes the pilot valve body to slide inside the second sliding hole and sliding of the pilot valve body causes the main valve body to slide inside the sliding hole. | 11-04-2010 |
20100294380 | SOLENOID-DRIVEN FLOW CONTROL VALVE - A working fluid flow rate flowing from a second port ( | 11-25-2010 |
20100300553 | MULTIFUNCTIONAL SAFETY VALVE DEVICE WITH INCORPORATED PROPORTIONAL PRESSURE REGULATOR - Multifunctional safety valve device with proportional pressure regulator, for line feeding aeriform fluid to a user, including a body defining a fluid or gas conduit connected to a gas feed line and a gas delivering line. The conduit has first and second passages intercepted by respective first and second valving elements. The second element downstream of the first for gas pressure regulating and modulating. The valving elements operated by electromagnetic actuators and urged closed at least by a spring. The second element cooperating with a membrane subjected to gas pressure to urge the second element closed. The membrane has, subjected to gas pressure, a surface larger than that of the second element subjected to the same pressure, to maintain the second element closed. The second element presenting, downstream of the second passage, a portion with a flexible rim arranged to seal the second passage when intercepted by the second element. | 12-02-2010 |
20100326542 | CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION HAVING MULTIPLE DEFAULT MODES - A hydraulic control system for a automatic transmission includes a plurality of solenoids and valves in fluid communication with a plurality of shift actuators. The shift actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of combinations of the solenoids allows for a pressurized fluid to activate at least one of the shift actuators. The solenoids are configured to provide a forward gear ratio and a reverse gear ratio when the solenoids are deengerized. | 12-30-2010 |
20100326543 | PRESSURE CONTROL VALVE - A pressure control valve for at least one of controlling and/or regulating a pressure level in a hydraulic circuit. The control valve comprises a valve housing ( | 12-30-2010 |
20110000554 | RAW MATERIAL SUPPLY DEVICE - A raw material supply device ( | 01-06-2011 |
20110017321 | DIRECTIONAL CONTROL VALVE ARRANGEMENT - A directional control valve arrangement includes a directional control valve with a valve spool. Using the directional control valve, it is possible to control a pressure-medium connection between a pressure port, a tank connection, and at least one working connection. A blocking valve is situated in a working passage that is connected to the working connection. The pressure in the working passage can be reduced using a pressure-release unit; the pressure-medium connection between the working passage and the tank connection is blocked by the valve spool. The pressure-relief unit has an intermediate space which is formed in the pressure-medium flow path between the blocking valve and a control edge of the valve spool that blocks the working passage to the tank port, the intermediate space being provided to accommodate a compression volume of the working passage. The intermediate space can be connected to the working passage by controlling-open the blocking valve, and the connection to the tank port is blocked by the control edge of the valve spool. | 01-27-2011 |
20110023980 | PROGRAMMABLE DEVICE FOR COMPRESSOR VALVE - An electronic, programmable device for controlling the motion of compressor valve elements, wherein the device receives an incoming signal from a velocity sensor located on a compressor valve; filters, amplifies, and processes the incoming signal by a control algorithm; and responds to the incoming signal by creating an output signal that produces an actuator force that is applied directly to a moving valve element and associated methodology. | 02-03-2011 |
20110030815 | FLUID MIXING SYSTEM - An object of the present invention is to provide a fluid mixing system able to mix the fluids of different lines by any ratio and control the flow rates of even pulsating fluids, able to control the flow rate of even a pulsating fluid, compact in configuration and able to be installed in a narrow space, and enabling easy pipe laying and pipe connection at the time of installation. | 02-10-2011 |
20110056572 | APPARATUS FOR WELLHEAD HIGH INTEGRITY PROTECTION SYSTEM - A high integrity protection system (HIPS) for protection of a pipe downstream of a wellhead includes: an inlet connected to the wellhead; outlet connected to the downstream pipe; two sets of two series-connected surface safety valves (SSVs) in fluid communication with the inlet and outlet, the two sets being in parallel fluid flow relation to each other, either one or both of the sets of SSVs operable as a flowpath for fluids entering the inlet and passing through the outlet to the downstream pipe; two vent control valves (VCVs), each connected to piping intermediate one set of series-connected SSVs, the VCVs being in fluid communication with a vent line, whereby, upon opening of a VCV, process pressure between the two SSVs is vented; a signal-generating safety logic solver, in accordance with preprogrammed safety and operational protocols; and pressure sensing transmitters attached to piping upstream of the HIPS outlet. | 03-10-2011 |
20110073196 | HYDRAULIC CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION - A hydraulic control apparatus including a gain switch section switching a gain of a line pressure adjustment valve between a first range gain that is less than 1 and a second range gain that is greater than or equal to 1, and a source pressure switching valve switching a source pressure for a working pressure adjustment valve that outputs the control pressure for the line pressure adjustment valve between the line pressure and a modulator pressure is disclosed. The source pressure switching valve switches the source pressure for the working pressure adjustment valve to the line pressure when the gain switching section switches the gain of the line pressure adjustment valve to the first range gain, and switches the source pressure for the working pressure adjustment valve to the modulator pressure when the gain switching section switches the gain of the line pressure adjustment valve to the second range gain. | 03-31-2011 |
20110079297 | Servo Valve - The present invention relates to a two-stage electrohydraulic servo valve with a first stage, which operates as pilot stage and includes a movable nozzle tube, and a second stage which operates as power stage, wherein the nozzle tube of the pilot stage is guided by means of a torsion element and the oil supply of the movable nozzle tube is integrated in the torsion element. | 04-07-2011 |
20110094605 | Vacuum Relief Valve - A vacuum relief valve includes: a housing with a central cavity, the housing having a system branch, a vacuum branch, a pilot branch, and an exhaust branch, each of the branches in fluid communication with the central cavity and having a respective port; a piston assembly comprising a first disk located in the pilot branch, a second disk located adjacent the exhaust branch, and a connecting member to which the first and second disks are mounted; and an actuator attached to a pilot seal, the actuator configured to move the pilot seal between a closed position, in which the pilot seal is positioned in and seals the pilot port, and an open position, in which the pilot seal is spaced from and does not seal the pilot port. When the pilot seal is in the closed position, the second disk is positioned on and seals the exhaust port, and when the pilot seal is in the open position, the second disk is spaced from and does not seal the exhaust port. In this configuration, often a smaller, less expensive actuator may be used to actuate the valve. | 04-28-2011 |
20110094606 | Pressure Control Apparatus For Supercritical Fluid - An object of the present invention is to provide a pressure control apparatus for a supercritical fluid in which variation in pressure is small even in measurement in which analysis conditions are changed with time to improve separation and other performance. That is, a pressure control apparatus for a supercritical fluid according to the present invention includes: a valve comprising; a valve chamber provided in a midway of a channel through which a supercritical fluid passes; and an electrically-operated valve element located in the valve chamber; wherein a front end of the valve element fits into the valve chamber when the valve is closed, and it travels backward when the valve is opened; a pressure detection member for detecting the pressure of the supercritical fluid in the channel on an upstream or downstream side of the valve chamber; an open/close control member for controlling the pressure detected by the pressure detection member to be a target pressure; and a valve-opening rate adjustment member for adjusting the valve-opening rate when the valve is opened based on the state of the supercritical fluid. | 04-28-2011 |
20110100487 | FLOW PATH SWITCH CONTROL DEVICE - Disclosed herein is a flow path switch control device used in a control system such as HVAC, refrigeration system and the like. In the prior art, since the pressure at an upper portion of a piston will drop instantaneously at the moment when a pilot valve is opened and closed, a large pressure difference is formed between the upper and lower sides of a piston to drive the piston to move, which results in a strong impact between a piston stopping member and the piston. Therefore, the life span of a product and the operating stability of the system will be affected. The flow path switch control device of the present invention includes a fluid inlet, a fluid outlet, a valve device arranged between the fluid inlet and the fluid outlet, and a pressure balancing control circuit. An adjusting device is provided in the pressure balancing control circuit to reduce a pressure change in fluid passing through the pressure balancing control circuit when the flow path switch control device is opened/closed, which enables the flow path switch control device to be smooth during the process of opening or closing, and thus avoid the problem of strong vibration and noise occurred at the moment when the solenoid switch is operated under large pressure difference. | 05-05-2011 |
20110114202 | Water Flow Monitor - A system may include a controllable shut-off valve disposed in a water supply line and a water flow sensor disposed in the water supply line. A controller may be coupled to the shut-off valve and the sensor. The controller may be configured to receive information indicative of water flow from the sensor and to instruct the shut-off valve to shut off the water supply line in the event of unusual water usage. | 05-19-2011 |
20110132473 | HYDRAULIC CONTROL VALVE ASSEMBLY WITH MONOLITHIC BODY AND SINGLE SPOOL PORT LOCK - A hydraulic control valve with a monolithic body having four sides located between a top and a bottom, and all pilot ports on a body front side, valve work ports on the top side, three bores running within the body from the front side to a rear side, a spool in each bore, and a single three section spool port lock that locks two or three ports at the same time, the pilot ports presented machined female quick-connect connections, with spring wet cavities being provided for mechanically operated control spools. | 06-09-2011 |
20110132474 | Back Flow Prevention System - A system that prevents the backflow of fluid is disclosed. The system comprises a housing, two rubber flaps that are attached in such a way to create a one-way valve, and a water sensor. The flaps are anchored to the inside of the housing and open due to the force of fluid flowing in one direction. Fluid flowing in the opposite direction presses the ends of the flaps against each other, thus closing the valve and preventing water from backflowing through the system. A water sensor, mounted within the housing, is activated when a backflow fills the housing, thus providing an alarm to indicate a backflow event has occurred. | 06-09-2011 |
20110132475 | Pressure Control Valve Arrangement Having Diaphragm Valves for Controlling a Fluid Pressure in an ABS Brake System of a Vehicle, Having a Valve Seat Integrated in a Unipartite Fashion in a Plastic Housing Part - A pressure control valve arrangement is provided for controlling the fluid pressure in an ABS brake system of a vehicle such that, in the event of a tendency of individual wheels of the vehicle to lock, the brake pressure in associated brake cylinders can be adaptively adjusted. At least two diaphragm valves, which have diaphragms which are loaded by spring elements, and at least one electromagnetic control valve, which can be activated by an electronic control device for the pilot control of the diaphragm valves, are provided in a housing of the pressure control valve arrangement. At least one valve seat of the at least one electromagnetic control valve is formed in a unipartite fashion with a housing part which is formed by a plastic injection-molded blank. | 06-09-2011 |
20110139271 | AUTOMATIC PRESSURE REGULATOR FOR FLOW RATE REGULATOR - The invention prevents overshoot from occurring in flow rate on the output side of a flow rate regulator when output flow rate is changed or the gas type distributed is changed. Thus, an automatic pressure regulator is provided to supply gas pressure to a flow rate regulator that includes a piezoelectric element driving type pressure regulating valve, a control pressure detector provided on the output side of the pressure regulating valve, and a controller to which a detected value P | 06-16-2011 |
20110162727 | Leak Detection System for Humidifier - An electronic leak detection system for home humidifier using the duct air conditioning system. The leak detection system uses a simple sensor in a water collection tray under the humidifier to detect if leakage has occurred. An auxiliary solenoid valve is connected in line with the water supply to the humidifier. When leakage is detected, power to the humidifier system is shut down and an auxiliary solenoid valve is powered. | 07-07-2011 |
20110162728 | VALVE ASSEMBLY FOR HIGH-PRESSURE FLUID RESERVOIR - A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value. | 07-07-2011 |
20110168279 | FLOW RATE CONTROLLER AND PROPORTIONAL ELECTROMAGNETIC VALVE - A flow rate controller is arranged such that a control circuit controls a proportional electromagnetic valve so that a flow rate detected by a flow rate sensor reaches a target flow rate. The proportional electromagnetic valve includes a coil supported in a holder, a bobbin and a fixed core, a valve element and a plate spring placed on a movable core, the valve seat, lead-in path, lead-out path, and orifice being formed in a body. The movable core is displaced by balance between an attractive force of the fixed core generated by excitation of the coil and an urging force of the plate spring, thereby adjusting the position of the valve element with respect to the valve seat to adjust the flow rate of a fluid. The orifice has an inside diameter set to a value of “φ1 mm or more” and an axial length set to a value to have a ratio of “from 0.1 to 0.6 inclusive” to the inside diameter. The lead-out path has an inside diameter set to be larger than the inside diameter of the orifice. | 07-14-2011 |
20110174393 | Proportional Valve Assembly - A valve assembly includes a valve housing defining a service passage, a first bore in fluid communication with the service passage, a first passage, a second bore in communication with the service passage and a second passage. The first bore has an inlet portion, a first service portion in communication with the service passage, and a first load holding portion. The first passage is in communication with the first load holding portion and the service passage. The second bore has a return portion, a second service portion in fluid communication with the first service passage, and a second load holding portion. The second passage is in selective communication with the second load holding portion of the second bore and the return passage. A valve is disposed in the second passage. The valve allows fluid to flow only in a direction from the second load holding portion to the return passage. | 07-21-2011 |
20110180161 | Distributed control system for a vacuum sewer system - A distributed control system for a vacuum sewer system comprising a suction pipe which is communicated with a vacuum source via a transport conduit ( | 07-28-2011 |
20110203682 | FAILURE DETECTING APPARATUS FOR HYDRAULIC CIRCUIT OF GEARBOX - A failure detecting apparatus for a hydraulic circuit of a gearbox includes an operating-state detector. The operating-state detector is configured to detect an operating state of a subject to be controlled with a control-signal pressure output from a solenoid valve. A current setting device is configured to set an electrical current supplied to a solenoid so as to close an output oil passage when a modulator valve is normal and to open the output oil passage when an open failure occurs in the modulator valve, while the solenoid valve is conductive. A failure determining device is configured to detect a failure of the modulator valve when the operating state of the subject to be detected by the operating-state detector is abnormal after a value of the electrical current to be supplied to the solenoid is set at the current setting device. | 08-25-2011 |
20110209779 | FLUID ACCUMULATOR ARRANGEMENT FOR AN INTERNAL COMBUSTION ENGINE - A fluid accumulator arrangement suitable for use with a compression ignition internal-combustion engine comprising a first storage volume, a second storage volume, and valve means fluidly connected between the first storage volume and the second storage volume. In one embodiment, the valve means is a three-way control valve wherein, in a first position, the first storage volume communicates with the second storage volume, in a second position the first storage volume is isolated from the second storage volume and, in a third position, one of the first or second storage volumes communicates with a low pressure drain. The arrangement may also include control means to operate the valve means in accordance with predetermined control strategies. | 09-01-2011 |
20110226355 | DEVICE FOR CONTROLLING THE SUPPLY OF A COMBUSTIBLE GAS TO A BURNER APPARATUS - A device for controlling a combustible gas supply to a burner is provided, which includes first and second servovalves, having respective valve seats associated with a corresponding shut-off mechanism, which include respective first and second control solenoid valves with an electromagnetic operating device that controls the opening/closing of the corresponding servovalve. The solenoid valves act to indirectly control the corresponding servovalve's respective shut-off mechanism. The pipes of the control are in communication with the main pipe through an auxiliary bleed pipe. A pilot pipe is branched from the auxiliary pipe to supply a pilot burner, and a thermoelectric magnetic unit with a knob is provided on the auxiliary pipe, which allows gas to flow towards the pilot burner when the unit is activated, while simultaneously shutting off the flow of gas towards the servovalve control circuit. The device includes a control mechanism, controlled by the knob, which controls gas flow. | 09-22-2011 |
20110240145 | ISOLATION VALVE WITH FAST DEPRESSURIZATION FOR HIGH-PRESSURE FUEL TANK - An isolation valve includes a flow restrictor disposed in a passage and having a piston with a first orifice and a depressurization valve with a second orifice. The valve also includes a solenoid valve assembly having a coil that is selectively energized by a signal from a controller and an armature that is moveable between first and second positions to open and close the first orifice and/or the second orifice. When the coil is energized, the armature moves to the second position to allow vapor to flow through the first orifice, the depressurization valve selectively opens to allow vapor to flow through the first orifice, the second orifice, or both. The two orifices work together to provide controlled vapor flow. | 10-06-2011 |
20110240146 | CONTROL DEVICE FOR HYBRID CONSTRUCTION MACHINE - A regulator that performs control such that a tilt angle of a variable volume pump increases as a pilot pressure in a pilot flow passage decreases is provided, and when a controller determines that all of a plurality of operation valves for controlling a flow of a discharged oil that is led from the variable volume pump to respective actuators are in a neutral position, the controller supplies the discharged oil from the variable volume pump to a regenerative hydraulic motor by setting a solenoid valve in an open position and sets a pilot flow passage change-over solenoid valve in a blocking position such that the pilot pressure led to the regulator through the pilot flow passage is reduced by a pressure reducing valve. | 10-06-2011 |
20110240147 | Fluid Flow Control Apparatus for Hydraulic Pump of Construction Machine - An apparatus for controlling the flow of a hydraulic pump of a construction machine according to the present disclosure includes: a pressure sensor detecting pressure signals corresponding to various control signal input values of the construction machine; a shuttle block including a plurality of shuttle valves dividing hydraulic lines connected with the pressure sensor into groups and extracting pressure oil of a hydraulic line under the highest pressure among hydraulic lines included in the corresponding group; auxiliary pressure sensors detecting the pressure of the pressure oil discharged from the shuttle block; electro proportional control valves in which opening rates are adjusted according to an applied signal and flows applied to signal lines are controlled to adjust discharge flows of main pumps; and a controller controlling the electro proportional control valves so that the opening rates of the electro proportional control valves are adjusted according to the magnitude of the pressure signal at the time of applying the pressure signal from the pressure sensor, wherein when the pressure sensor is judged as abnormal, the controller controls the operate rates of the electro proportional control valves to an opening rate corresponding to the magnitude of a signal outputted from the auxiliary pressure sensors. | 10-06-2011 |
20110259446 | GAS SHUT-OFF DEVICE - An object of the present invention is to perform a suitable registration of a flow rate of appliances to promote the optimization of a usage time limitation function. In a gas shut-off device according to the invention, a flow rate detection unit measures a flow rate, a flow rate calculation unit calculates values of instant flow rates from a detection value, an average flow rate calculation unit obtains an average flow rate from the obtained instant flow rates, a flow rate change decision unit decides the presence or absence of a change in the flow rate based on the obtained average flow rate, a flow rate storage unit stores a value of the obtained average flow rate, an increase flow rate registration unit registers an amount of the flow rate change at the time of increase change decision by the flow rate change decision unit, a decrease flow rate re-registration unit reduces the registered flow rate near an amount of the flow rate change at the time of decrease change decision by the flow rate change decision unit, and re-registers and replaces it with a value of the average flow rate obtained by the average flow rate calculation unit after the reduction of the registered flow rate, and a shut-off unit shuts off the supply of gas when decided as an abnormality by an abnormality decision unit from the registered flow rate and a decision value. | 10-27-2011 |
20110308642 | HYDRAULIC VALVE DEVICE - The invention relates to a hydraulic valve device ( | 12-22-2011 |
20120000550 | Fluid Flow Control Assembly - A device has been disclosed that may include a spool valve including a body having a first connector and a second connector and a spool movable relative to the body for controlling flow between the first connector and the second connector. The reversible flow control assembly further may include a pilot valve device developing a single pressure command in the form of a fluid at a command pressure. The spool valve may be responsive to the single pressure command developed in said pilot valve device to control flow between the first connector and the second connector without regard to the direction of flow. The majority of axial forces acting on the spool to position the spool relative to the body when fluid is flowing through the valve may be fluid forces. | 01-05-2012 |
20120000551 | GAS SHUTOFF DEVICE - The present invention provides a gas shutoff device that prevents tampering procurement of gas or tamper due to stealing of the gas shutoff device. | 01-05-2012 |
20120090703 | POWERTRAIN PRESSURE AND FLOW CONTROL SYSTEM FOR AUTOMATIC TRANSMISSIONS - A pressure and flow control system includes a hydraulically-controlled component, a pilot valve, and a regulating valve. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The regulating valve is in fluid communication with the pilot valve, and is configured to receive the pilot signal. The regulating valve is further configured to output a control signal, which controls the hydraulically-controlled component. | 04-19-2012 |
20120090704 | Liquid Flow Controller And Precision Dispense Apparatus And System - Apparatus and a control system for monitoring (preferably digitally) and/or controlling pressure to a pneumatic load such as a proportional fluid control valve and using a measurement input from a fluid measurement device that responds to a flow rate, the liquid measurement input being used to control the pressure to the pneumatic load so that pneumatic load may be increased or decreased (to proportionally open or close the pneumatic valve) to change the flow rate of the fluid to a desired rate. The pneumatic load can also be adjusted (to proportionally open or close the pneumatic valve) to accommodate changes in temperature and viscosity of a fluid. | 04-19-2012 |
20120125451 | VALVE SYSTEM - A valve system is described for high-pressure fuel injection, including a pilot valve which has a pilot valve needle, a pilot valve seat and a pressure chamber, an electromagnetic actuator for actuating the pilot valve needle, and a main valve which has at least one spray hole, a closing element, a support piston and a pressure compensating chamber, the closing element having a receiving chamber for the purpose of accommodating the support piston and the pressure compensating chamber being provided in the receiving chamber of the closing element, the pilot valve seat being provided on the closing element, and the pilot valve establishing a connection between the pressure chamber and the pressure compensating chamber for the purpose of reducing an opening force for the main valve. | 05-24-2012 |
20120132296 | Bathroom flushers with novel sensors and controllers - A bathroom flusher includes a body having an inlet in communication with a supply line and an outlet in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outlet upon sealing action of a moving member at a valve seat thereby controlling flow from the inlet to the outlet, and an actuator for actuating operation of the moving member. The bathroom flusher includes one of several novel sensors and is controlled by one of several novel controllers, as described. The controller may execute a novel control algorithm. | 05-31-2012 |
20120138169 | FUEL TANK VAPORIZATION GAS PURGE SYSTEM - A fuel tank vaporization gas purge system may include a fuel tank with a vent valve and a roll over valve disposed for discharging a vaporization gas, a canister for absorbing/detaching a hydrocarbon in the vaporization gas, a vent line and a sub-vent lines connected to the canister to the vent valve and the roll over valve, a vapor control valve disposed in either the vent line or the sub-vent line, and an electronic control unit (ECU) electrically connected to said vapor control valve and selectively opening/closing said vapor control valve based on a type of said vapor control valve and operating conditions of a vehicle. The vapor control valve may be of an open valve type and closed by the ECU when an engine is in purging, or of a close valve type and opened by the ECU when an engine is turned off or during refueling. | 06-07-2012 |
20120152376 | Fluid Flow Detection Device - A fluid flow detection device includes a housing of non-magnetic metal, a flow passage through the housing and a valve seat in the flow passage. A magnetic valve element emits a magnetic field. The valve element is movable relative to the valve seat between a closed position blocking fluid flow through the flow passage and an open position allowing fluid flow through the flow passage. The magnetic valve element is biased toward the closed position. A magnetic field enhancer is movable with the magnetic valve element for enhancing the magnetic field. A magnetic field sensor on the housing is operable to signal a change in position of the valve element as it moves between its open and closed positions. | 06-21-2012 |
20120152377 | FLUID BYPASS VALVE SYSTEM - A fluid bypass valve system includes a blocking valve having an inlet, an outlet, and a vent. The blocking valve is configured to allow a fluid to pass from the inlet to the outlet when there is a fluid pressure drop from the inlet to the vent. An electro-mechanical valve having a first fluid path and a second fluid path is configured to toggle between the first fluid path and the second fluid path in response to an electrical signal. A fluid conduit couples the blocking valve to the electro-mechanical valve such that the vent is communicatively coupled to an area of lower pressure via the first fluid path and receiving fluid via an orifice path when the electro-mechanical valve is toggled to the first fluid path, and such that the vent is communicatively coupled to an area of higher pressure fluid via the orifice path and via an additional path when the electro-mechanical valve is toggled to the second fluid path. | 06-21-2012 |
20120180877 | Non-invasive Thermal Dispersion Flow Meter with Chronometric Monitor for Fluid Leak Detection - A non-invasive thermal dispersion flow meter with chronometric monitor for fluid leak detection includes a heater, an ambient temperature sensor and a flow rate sensor which are configured to sense the temperature of a fluid in a conduit, and then monitor the flow of that fluid through the conduit. The fluid flow sensor is incorporated into a Wheatstone bridge circuit which is used to provide increased sensitivity to the outputs of the sensors. Based upon the ambient temperature sensor readings, the flow rate sensor and heater may be adjusted to optimize the operation of the system to detect leaks. An alternative embodiment utilizes a single sensor and separate heater which work together to determine heat propagation times which in turn is used to calculate flow rate. | 07-19-2012 |
20120241024 | COMPOSITE VALVE - In the case that a lift amount of a second valve body for controlling a small flow rate is equal to or less than a predetermined amount, a pilot passage is closed by a pilot valve body, and a first valve port is closed by a first valve body for controlling a large flow rate, thereby taking a small flow rate control state in which a flow rate is controlled in correspondence to the lift amount of the second valve body, and in the case that the lift amount of the second valve body goes beyond the predetermined amount, the pilot valve body is moved up in conjunction with an upward movement of a valve shaft so as to open the pilot passage, thereby taking a large flow rate control state in which the first valve body opens the first valve port on the basis of this. | 09-27-2012 |
20120247584 | FLOW CONTROL DEVICE - In a flow control device | 10-04-2012 |
20120279584 | FIELD ADJUSTABLE GAS VALVE AND METHOD OF CONTROL - A valve unit includes a valve member that moves relative to a valve seat in response to a magnetic field generated by a coil. An input signal to the coil controls the extent of movement of the valve member relative to the valve seat, to control a gas flow rate therethrough. The gas valve unit also includes a setting adjustment device that provides a setting adjustment input utilized for calibrating or adjusting at least one gas flow rate. A valve controller is configured to receive an activation signal and to responsively send an input signal to the coil to move the valve member and establish at least one desired gas flow rate corresponding to the activation signal, wherein the valve controller is configured to adjust the input signal to the coil based on the setting adjustment input, to thereby enable field adjustment of at least one gas flow rate. | 11-08-2012 |
20120285554 | Apparatus Using Electronically-Controlled Valves - The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels. | 11-15-2012 |
20120285555 | VEHICULAR BRAKE FLUID PRESSURE CONTROL APPARATUS - A vehicular brake fluid pressure control apparatus includes: normally open and normally closed electromagnetic valves disposed to correspond to plural wheel brakes; and a control unit which controls fluid pressures transmitted to the wheel brakes by controlling drive currents applied to the electromagnetic valves according to plural different fluid pressure control modes. The control unit controls the normally closed electromagnetic valves while switching, according to which of the fluid pressure control modes is effective, between a responsivity priority control in which drive currents applied to the normally closed electromagnetic valves are increased to a target current value instantaneously at a first slope, a silence priority control in which the drive currents are increased at a second slope gentler than the first slope, and an intermediate control in which the drive currents are increased at a third slope gentler than the first slope and steeper than the second slope. | 11-15-2012 |
20120291886 | WATER VOLUME AND PRESSURE CONTROL SYSTEM - A system for remotely controlling the supply and pressure of water to a building includes one or more sensors for detecting the presence of water in undesirable locations, a water flow and pressure regulation unit connected to the building water input supply, and a system controller capable of providing wireless communication with a user via a plurality of external devices. | 11-22-2012 |
20130000753 | VALVE SIGNATURE DIAGNOSIS AND LEAK TEST DEVICE - A valve signature diagnosis and leak testing device includes a spool valve operatively connected to a pilot valve, the pilot valve being configured to position the spool valve to one of an open position and a closed position. A blocker valve is fluidly connected to a control fluid outlet of the spool valve. An electrical module is operatively connected to the pilot valve, a supply of control fluid, and the blocker valve, the electrical module being capable of sending pulsed electrical signals to the pilot valve and the blocker valve to selectively position the spool valve and the blocker valve to an open or closed position. | 01-03-2013 |
20130056096 | GAS TURBINE METERING VALVE - A metering valve includes a valve body, a flow tube, an orifice plate, a central flow body, and a mover. The valve body has an inlet and an outlet. The flow tube is carried for axial movement in slidable and sealing engagement with the valve body at an inlet end and an outlet end. The orifice plate has an outlet. The central flow body is provided on an upstream end of the orifice plate and has an annular seal configured to seat into engagement with the outlet end of the flow tube when the flow tube is moved to a downstream position. The central flow body also includes a central, protruding flow diverter upstream and central of the annular seal. The mover is provided in the valve body and is configured to carry the flow tube for displacement of the output end toward and away from the central flow body. | 03-07-2013 |
20130061954 | VALVE PACKING FUGITIVE EMISSION DETECTION SYSTEM - In accordance with the resent invention, there is provided a fugitive emission detection system for use in conjunction with a valve having a packing deign which includes a primary packing and a secondary packing. The valve further includes a leak port which is disposed within the valve bonnet between the primary and secondary packings. The detection system is operative to maintain the leak port in a normally open state. As a result, any fluid leakage past the primary packing is normally sent to the detection system, as opposed to being applied to and thus pressurizing the secondary packing. In the event of that a prescribed level of fluid leakage beyond the primary packing is detected, the leak port will be closed. The closure of the leak port facilitates the pressurization of the secondary packing. | 03-14-2013 |
20130081714 | FLOW CONTROL VALVE - A flow control valve, in particular in the form of an electromagnetic proportional | 04-04-2013 |
20130092259 | PILOT OPERATED FLUID REGULATORS HAVING A RESET APPARATUS AND RELATED METHODS - Fluid regulator systems having reset apparatus and methods are described herein. An example reset apparatus for use with a fluid regulator system includes a first valve having an inlet to receive a loading fluid and an outlet in fluid communication with a loading chamber of a fluid regulator, and a second valve having an inlet in fluid communication with the loading chamber of the fluid regulator and an outlet in fluid communication with a vent. | 04-18-2013 |
20130112290 | Ventilation Arrangement For A Fuel Tank - A ventilation arrangement for the head space of the fuel tank of a vehicle comprises a switchable main valve intended for adjusting an arbitrary pressure in the head space of the tank. By way of the opening position of the main valve, a connection between a connection ( | 05-09-2013 |
20130126017 | DISPLACEMENT CONTROL VALVE - A displacement control valve includes an electromagnetic solenoid, a drive force transmitting body actuated, and a pressure sensitive portion having a pressure sensitive body that selectively extends and contracts in the movement direction of the drive force transmitting body in correspondence with pressure in a pressure sensitive chamber. A first valve body is arranged in the pressure sensitive body to adjust the cross-sectional area of an outlet passage. A second valve body is connected to the drive force transmitting body to adjust the cross-sectional area of a supply passage. The pressure sensitive body is movable in the movement direction of the drive force transmitting body in the pressure sensitive chamber. The pressure sensitive chamber is configured to communicate with the control pressure chamber. The pressure sensitive body is urged by the pressure in the control pressure chamber in the direction in which the first valve body closes. | 05-23-2013 |
20130167949 | COMPOSITE VALVE - A composite valve has a communication path communicating a first valve chamber with a second valve chamber, a second valve port communicating the second valve chamber with an outflow port, and a pilot passage communicating a back pressure chamber with the outflow port. In the case that a lift amount of a second valve body for a small flow rate control is equal to or less than a predetermined amount, the pilot passage is closed by a pilot valve body, and a first valve port is closed by a first valve body, thereby taking a small flow rate control state. In the case that the lift amount of the second valve body goes beyond the predetermined amount, the pilot valve body is moved up in conjunction with the upward movement of a valve shaft so as to open the pilot passage, thereby taking a large flow rate control state. | 07-04-2013 |
20130167950 | GAS PRESSURE REGULATING VALVE - An electromagnetic pressure regulating valve includes a valve body and causes a valve body to move by an electromagnetic proportional solenoid to adjust an opening degree of a valve passage, thereby regulating secondary pressure to target pressure. A pressure return chamber is formed in the housing, and a diaphragm seal is provided at the valve body. The diaphragm seal receives the secondary pressure of the pressure return chamber to cause the valve body to move toward a closed position. A bearing member is provided between the valve body and the housing. In a gap between the valve body and the housing, a high-pressure sealing member is provided closer to the valve passage than the bearing member, and a low-pressure sealing member is provided closer to the bearing member than the high-pressure sealing member. A buffer chamber connected to a secondary port is formed between the sealing members. | 07-04-2013 |
20130180606 | FLOATING ACTION TYPE SERVO-VALVE - The present invention relates to a valve, and more specially relates to a floating action type servo-valve used for fluid control, comprising a valve body, a torque motor, a pilot stage and a power stage control mechanism. An upper valve block, an intermediate baffle and a lower valve block are spliced by a fastener in the valve body. A torsion-bar spring of the torque motor passes through the center of a gag bit and is fixed to the valve body with a stand. A pilot stage revolving shaft and a power stage revolving stage are provided in a same central line, with a mating between the pilot stage revolving shaft and the upper valve block and a mating between the power stage revolving shaft and the lower valve block. The servo valve also comprises a shifting enlargement mechanism constitute by a shafting fork and a shafting lever, the rotation center of the shifting fork situating in the axis of the pilot stage revolving shaft and the rotation center of the shifting lever situating in the axis of torsion-bar spring, one end of the shifting lever being connected to the lower end of torsion-bar spring of torque motor and the other end of shifting lever being slidably connected to the shifting fork. The floating action type servo-valve is characterized by adjustable power stage output, better dynamic and static performances, less friction and flexible movement. | 07-18-2013 |
20130220452 | Liquid Flow Controller And Precision Dispense Apparatus And System - Apparatus and a control system for monitoring (preferably digitally) and/or controlling pressure to a pneumatic load such as a proportional fluid control valve and using a measurement input from a fluid measurement device that responds to a flow rate, the liquid measurement input being used to control the pressure to the pneumatic load so that pneumatic load may be increased or decreased (to proportionally open or close the pneumatic valve) to change the flow rate of the fluid to a desired rate. The pneumatic load can also be adjusted (to proportionally open or close the pneumatic valve) to accommodate changes in temperature and viscosity of a fluid. | 08-29-2013 |
20130291963 | CAPACITY CONTROL VALVE - A capacity control valve for increasing the ability to drain liquid refrigerant from a control chamber during startup of a variable-capacity compressor without changing the control valve characteristics has a spring acting in the direction of valve opening provided between an adapter and a free end of a pressure-sensitive body in the extension and contraction direction thereof and having an annular seat surface, and a third valve part having an annular engaging surface for opening and closing a suction-side passage by engaging and disengaging with the seat surface of the adapter. | 11-07-2013 |
20130319546 | PRESSURE RELIEF VALVE - A pressure relief valve includes an outer frame, a ferromagnetic cylinder, a plastic air faucet, an electrical coil module and a spring. The plastic air faucet has a first end extending through a through hole of the outer frame and a second opposite end extending through a hollow channel of the ferromagnetic cylinder. The electrical coil module is located within the outer frame and has a central passage allowing the ferromagnetic cylinder to be accommodated inside. The ferromagnetic stopper is slidable along the central passage of the electrical coil module, wherein the ferromagnetic stopper has a seal gasket. The spring is located between the air faucet and the ferromagnetic stopper. When the electrical coil module is electrified, the ferromagnetic stopper and the ferromagnetic cylinder attract each other to against the resilient force of the spring to push the seal gasket against the air opening of the air faucet. | 12-05-2013 |
20130327423 | TRANSMISSION CONTROL APPARATUS AND ADJUSTMENT METHOD FOR OUTPUT CHARACTERISTIC THEREOF - In a linear solenoid | 12-12-2013 |
20130333773 | TWO-STAGE VARIABLE FORCE SOLENOID - A two-stage, variable force, solenoid control valve ( | 12-19-2013 |
20130333774 | METHOD OF AND APPARATUS FOR MEASURING THE PRESSURE OF A GAS - There is provided a pressure gauge for measuring the pressure of a gas. The pressure gauge comprises a housing connectable to the gas source and comprising an interior which is, in use, in communication with said gas. The pressure gauge further comprising a sensor assembly located within said housing and including a piezoelectric oscillator which, in use, is located in contact with said gas, said sensor assembly being arranged to measure the oscillation frequency of said piezoelectric oscillator in said gas and configured to determine, from the frequency measurement and the known temperature and known molecular weight of the gas, the pressure of the gas. By providing such an arrangement, an overpressure proof yet accurate pressure gauge can be provided. This is in contrast to conventional gauges which are damaged permanently by overpressure situations. | 12-19-2013 |
20130340860 | ELECTRICALLY OPERATED VALVE CONTROL DEVICE AND ELECTRICALLY OPERATED VALVE DEVICE - In an electrically operated valve control device of an electrically operated valve provided with a valve body which controls a flow rate of a fluid, and a motor which drives the valve body, the control device is provided with a valve opening degree control means which controls a valve opening degree of the electrically operated valve, an initializing control means which executes an initializing process of the electrically operated valve, and a memory means, and an executing frequency of the initializing process is stored in the memory means. The control device is further provided with a communicating means which carries out transmission and receipt of a signal, and can output the executing frequency of the initializing process which is stored in the memory means. An electrically operated valve device can be constructed by the electrically operated valve to which the electrically operated valve control device is integrally attached. | 12-26-2013 |
20140000729 | LEAQK DETECTION AND CONTROL SYSTEM AND METHOD | 01-02-2014 |
20140007951 | FUEL SYSTEMS AND METHODS FOR CONTROLLING FUEL SYSTEMS IN A VEHICLE WITH MULTIPLE FUEL TANKS - Fuel systems and methods for controlling fuel systems in a vehicle with multiple fuel tanks are provided. An exemplary vehicle fuel system includes a first fuel tank including a first pressure sensor, and a second fuel tank. The system may further include a fuel tank isolation valve positioned to selectively decouple the first fuel tank and the second fuel tank. The system may further include an electronic controller configured to identify which of the first fuel tank and second fuel tank includes a fuel system leak by selectively decoupling the first fuel tank and the second fuel tank via the fuel tank isolation valve, responsive to an identification of the fuel system leak. | 01-09-2014 |
20140041737 | VALVE ASSEMBLY FOR HIGH-PRESSURE FLUID RESERVOIR - A valve assembly is disclosed for controlling fluid flow between two reservoirs. The valve assembly includes a relief valve arranged inside the housing and configured to open a first fluid flow path when the first reservoir is above a first predetermined pressure value. | 02-13-2014 |
20140069528 | APPARATUS FOR REGULATING FLUID FLOW FROM A RESERVOIR - A fluid flow regulator adapted to be inserted into a conduit and inflated to form a leak tight sealing contact with the interior wall of the conduit. The fluid flow regulator includes a toroidal inflatable member mounted on a cylindrical annular mount which attaches to a flow-through pipe. The fluid flow regulator also includes a fluid flow control valve within the inner portion of the toroidal inflatable member which can be opened and closed to control the flow of fluid from the reservoir through the conduit. | 03-13-2014 |
20140083527 | Apparatus for Flamer Fuel Pressure Control - A flamer may be used to sterilize poultry litter, soil, concrete, etc. The stationary or mobile flamer disclosed comprises a hood to contain the heat, an external frame, and burners. A fuel tank may be carried on the flamer or on a tractor. An additional embodiment provides for mounting the flamer on wheels, permitting the unit to be towed by a truck, four-wheeler, tractor, etc. The burners are adjustable as to angle, and fueling rate. A pressure in the fuel system is controlled by selectively switching between the liquid and vaporous components of the fuel. By limiting how low the pressure may fall, the flow of fuel from the tank to the torches is more consistent. | 03-27-2014 |
20140090723 | ELECTRONICALLY OPERATED PRESSURE REDUCING REGULATOR - A pressure-reducing regulator for CNG fuel includes a high pressure sensor that detects fuel pressure at an inlet, a filter element that filters fuel, an orifice that provides access to a pressure reduction chamber, and a movable pintle located within the orifice, such that a flow rate of fuel through the orifice varies according to a position of the pintle within the orifice. The pressure-reducing regulator further includes a motor that moves the pintle, a low pressure sensor that detects fuel pressure at an outlet and a control unit comprising a processor. The process is configured for reading data from the high pressure sensor, data from the low pressure sensor and vehicle data from an engine, calculating a desired position of the pintle based on the sensor data and the vehicle data, and transmitting a signal to the motor for moving the pintle to the desired position. | 04-03-2014 |
20140109995 | Mass Flow Controller Driven by Smart Material Actuator with Mechanical Amplification - An improved mass flow controller with a body having an inlet and an outlet; a sensor adapted to sense the flow of material out of the outlet; a controller adapted to receive a signal from the sensor; a proportional valve operatively connected between the inlet and the outlet; and a mechanically-amplified smart material actuator electrically connected to the controller and operatively connected to the proportional valve. The mechanically-amplified actuator comprises a smart material device, a compensator, a movable supporting member, at least two mechanical webs, at least two actuating arms, and a second stage assembly. | 04-24-2014 |
20140130907 | VACUUM PRESSURE REGULATION SYSTEM - A valve main body including a valve member that opens and closes a valve seat is associated with a fluid pressure driving unit including a pressure-receiving member (piston) that drives the valve member, a valve aperture adjusting unit that sets the aperture of the valve member, an electromagnetic valve unit that supplies and discharges a pilot fluid to and from the fluid pressure driving unit, and a controller that controls the aperture of the valve member. The controller controls the aperture of the valve member by controlling the position of the pressure-receiving member, such that the vacuum chamber attains a predetermined target pressure, and monitors a difference between an actual pressure in the vacuum chamber obtained from the pressure sensor and the target pressure, and announces abnormality in the case where the difference deviates from a tolerance range. | 05-15-2014 |
20140137955 | REGULATING VALVE, IN PARTICULAR FOR THE ELECTROPROPORTIONAL REGULATION OF THE PIVOT ANGLE OF A HYDRAULIC MACHINE - A regulating valve, in particular an electroproportional pivot-angle regulator for a variable-displacement pump, includes a piston bore formed in a valve housing and a regulating piston guided in the piston bore. The regulating piston is configured to be actuated in an adjusting direction via an actuator, in particular via a lifting magnet. The regulating piston is acted upon in the opposite direction by a spring force of a counterspring. The counterspring is supported via a spring plate on a supporting spring which is supported on the valve housing. The spring plate is tensioned between the supporting spring and an adjusting device by which the spring plate is configured to be displaced in relation to the valve housing in or opposite to the adjusting direction. | 05-22-2014 |
20140150901 | PIEZO-ACTUATED PILOT VALVE - A pilot valve includes a first port in selective fluid communication with a second port by a passageway through the valve; a valve seat; a movable piston selectively engagable with the valve seat to close the valve when the valve member engages the valve seat and to open the valve when the valve member is spaced from the valve seat; a pilot passageway providing a pathway to a portion of the piston opposite the side that engages the valve seat, the pathway being opened and closed by a pilot plug; and a piezo unit operable to control movement of the pilot plug to control whether the pathway is opened or closed. | 06-05-2014 |
20140150902 | Dual Regulation Level Valve And De-Icing Device For An Air Inlet Of An Aircraft Engine Nacelle Incorporating Said Valve - A valve for regulating the pressure of a gas flow in a duct according to two pressure levels includes a gate whose position is controlled by an actuator with two chambers and a first control means with a first set point pressure P1 making it possible to position the gate in a first regulated position by comparing a pressure P | 06-05-2014 |
20140202561 | ELECTROMAGNETIC FLUID VALVE - Electromagnetic fluid valve regulating the throughflow of a pressure medium which flows through a housing part having at least two inlet openings which lie opposite one another and at least one outlet opening for the pressure medium. It being possible for a channel which is situated between the inlet openings and the outlet opening to be closed to a greater or lesser extent by an axially movable slide for regulating the throughflow of the pressure medium, a pin protruding into the channel centrically with respect to the center axis of the fluid valve, the pin being provided, for flow guidance, with an outer contour which is of at least approximately conical, pyramidal or hyperbolic design, with the result that the pressure medium which is to flow from the inlet openings strikes the outer contour of the pin and diverted in the direction of the at least one outlet opening. | 07-24-2014 |
20140230924 | AUTOMATIC SHUT OFF VALVE - A shut off valve featuring a flow conduit with a fluid inflow end and a fluid outflow end, at least one electrically actuated flow control element coupled to the conduit with a blocking state and a flow state, control circuits coupled to the element and a local power source coupled at least to the control circuits. Wherein, in response to a received signal from a displaced source, the control circuits switch the element from the flow state to the blocking state. | 08-21-2014 |
20140230925 | FLUID MONITORING AND CONTROL SYSTEM - A fluid monitoring and control system includes a central hub having a central processor, a user interface and an input/output port. A plurality of control devices communicate with the central hub. Each control device includes a fluid pipe section including a fluid inlet and a fluid outlet. A fluid valve is coupled in series within the fluid pipe section and an electric motor is mechanically connected to the fluid valve. A temperature sensor, pressure sensor and flow rate sensor are coupled to the fluid pipe section monitoring a temperature, pressure and flow rate of the fluid flow within the fluid pipe section. A control device processor is controllably connected to the electric motor, temperature sensor, pressure sensor and flow sensor. A control device input/output port is coupled to the control device processor, the control device input/output port in communication with the input/output port of the central hub. | 08-21-2014 |
20140283929 | Gas Valve and Method of Control - A stepper-motor gas valve control is disclosed that includes a main diaphragm in a chamber that controllably displaces a valve relative to an opening in response to changes in pressure, to adjust fuel flow through the valve. A servo-regulator diaphragm is provided to regulate flow to the main diaphragm, to thereby control the rate of fuel flow. A stepper motor is configured to move in a stepwise manner to displace the servo-regulator diaphragm, to control fluid flow to the main diaphragm. A controller mounted on the stepper-motor regulated gas valve control receives and converts an input control signal from a heating system to a reference value between 0 and 5 volts, and selects a corresponding motor step value. The control responsively moves the stepper-motor in a step wise manner to displace the servo-regulator diaphragm and thereby regulates the rate of fuel flow through the valve. | 09-25-2014 |
20140318641 | VALVE SENSOR ARRANGEMENT FOR MOTOR VEHICLE AIR CONDITIONING SYSTEMS - The invention relates to a valve sensor arrangement ( | 10-30-2014 |
20140326336 | Valve, In Particular A Pressure Regulating Valve Or Pressure Limiting Valve - The invention relates to a valve ( | 11-06-2014 |
20140326337 | INTEGRATED VALVE ASSEMBLY - A valve assembly for an air flow system, where the air flow system has a turbocharger unit and a venturi valve member for receiving a portion of the pressurized air from the turbocharger unit, and generating back pressure. The valve assembly includes a bypass switching valve and a bypass check valve. During a first mode of operation, the valve assembly is exposed to vacuum pressure, and the bypass check valve is exposed to the vacuum pressure such that the bypass check valve is placed in a closed position. During a second mode of operation the turbocharger unit is activated, pressurized air flows through the bypass switching valve, and places the bypass check valve in an open position, and the back pressure generated by the venturi valve member and the pressurized air from the turbocharger unit creates a pressure differential in the bypass check valve. | 11-06-2014 |
20140338762 | SYSTEM AND METHOD FOR FEED-FORWARD VALVE TEST COMPENSATION - A system includes a controller including a processor configured to execute a program stored in a memory of the controller to generate and transmit a first output comprising a total flow demand value to a plurality of valves communicatively coupled to the controller. Each of the plurality of valves is configured to receive a respective portion of the total flow demand value. The processor is configured to receive an input indicative of a decoupling of a first valve of the plurality of valves and to generate a second output based at least in part on the first output and a first operational characteristic of the first valve. The second output is configured to vary a second operational characteristic of a second valve of the plurality of valves to maintain the total flow demand value. | 11-20-2014 |
20140360598 | READING AND ADJUSTING TOOL FOR HYDROCEPHALUS SHUNT VALVE - A reading and adjustment tool for use with a valve having a pressure or flow setting adjustable to a plurality of pressure or flow settings is disclosed. The tool includes a signal generator and an excitation coil coupled to the signal generator. The signal generator includes an adjustment interface configured to generate an adjustment signal to adjust the pressure or flow setting and a reading interface to generate a reading signal to read the pressure or flow setting of the valve. At least one excitation coil is connected to the signal generator and configured to generate an oscillating electromagnetic field based on one of the adjustment signal and reading signal. A sense coil can include two portions positioned on either side of the at least one excitation coil to determine the pressure or flow setting of the valve. | 12-11-2014 |
20150007897 | SYSTEM AND METHOD FOR PROVIDING A SELF VALIDATING MASS FLOW CONTROLLER AND MASS FLOW METER - The disclosed embodiments include a method, apparatus, and computer program product for providing a self-validating mass flow controller or mass flow meter without requiring any software modification to a tool/tool controller in which the mass flow controller is being utilized. For example, the disclosed embodiments include a mass flow controller comprising an internal valve configured to receive a first pneumatic line coupled to a tool pilot valve and couple a second pneumatic line from the internal valve to an external isolation valve upstream of the inlet. The mass flow controller also includes at least one processing component configured to execute instructions to perform an in-situ rate of decay measurement after executing instructions to close the external isolation valve by using the internal valve to block airflow being received through the first pneumatic line. | 01-08-2015 |
20150013786 | VALVE POSITIONER HAVING BYPASS COMPONENT AND CONTROL VALVE COMPRISED THEREOF - Embodiments of a valve positioner that can maintain operation of the control valve despite failures in one or more components. These embodiments reduce downtime by allowing in-situ repair to occur on the valve positioner. In one embodiment, the valve positioner incorporates a by-pass component, which can utilize control input signals (e.g., a 4-20 mA signal) to energize one or more components (e.g., a current-to-pressure converter) to cause the control valve to modulate fluid flow without the digital microprocessor and/or related components. | 01-15-2015 |
20150027565 | WATER SUPPLY MONITOR - A water flow monitor for detecting water flow comprising: a control panel, where the control panel depicts control mechanisms associated with water flow monitoring; a pipe receptacle on a bottom side of the water flow monitor; a strap extending from the bottom, where the strap secures the water flow monitor to a water supply pipe; a plurality of time period settings, where a particular time period may be selected using the control panel; and an alarm, where the alarm alerts a user of continuous water flow over one of the time period settings. In an alternative embodiment, the water flow monitor connects in line with a water supply pipe, where water flow monitor provides both an alarm and a mechanism to actually cut the water supply off should the overflow parameters are met associated with the monitor. | 01-29-2015 |
20150059875 | Temperature Control Valve Actuator Assembly - A control valve actuator assembly having internally configured pressure transducers and associated pressure channels internally integrated within the yoke of the actuator assembly. | 03-05-2015 |
20150059876 | ELECTROMECHANICAL POLYMER PUMPS - A motor-less pump includes: (a) a housing having an inlet provided to allow fluid flow into the housing and an outlet provided to allow fluid flow out of the housing; (b) an elastic diaphragm positioned in the housing such that motion in the elastic diaphragm drives the fluid flows at the inlet and the outlet of the housing; and (c) one or more electromechanical polymer (EMP) actuators each being provided on a surface of the elastic diaphragm, wherein the mechanical responses to electrical stimuli applied on the EMP actuators cause the motion in the diaphragm. The EMP actuators may include one or more bimorphs. | 03-05-2015 |
20150059877 | INTERLACE LIFTING MECHANISM - A mechanism for coupling motion of a piezoelectric actuator in axisymmetric devices like modulating proportional valves uses actuator extension motion to cause translation away from a mechanism mounting plane and thereby enables lifting open of a valve element instead of the usual pushing closed of the valve element. The mechanism does not contain any gears nor leadscrew threads, and in usual practice is constantly loaded, so apparent change of direction is achieved without mechanical backlash introducing hysteresis. The mechanism surrounds a piezoelectric stack actuator by contacting opposite ends of the piezoelectric stack, whereby extension motion lengthening the actuator causes a lifting portion of the mechanism to translate toward the bulk of the actuator while the proximally adjacent mounting portion of the mechanism remains at a fixed location. | 03-05-2015 |
20150083240 | ELECTROMAGNETIC VALVE - A piston is configured by a piston body and a support such that the piston is divided, along a direction of axis line, into the piston body, which is formed integrally with a valve element, and the support, which is provided separately from the valve element. A piston ring, which slides along a body, is held between the piston body and the support. The piston body is constantly in contact with one side face of the piston ring, and the support is constantly in contact with the other side face of the piston ring. | 03-26-2015 |
20150083241 | ELECTROMAGNETIC VALVE - A pilot valve element includes a metallic pilot valve body formed integrally with a plunger, a flexible sealing member, fitted on a tip of the pilot valve body, which touches and leaves a pilot valve seat, and a stopper for restricting the displacement of the pilot valve element relative to a driven member in a manner such that the sealing member is stopped in a direction of axis line after the sealing member has seated on a pilot valve seat. The stopper is configured such that the pressure-receiving diameter of the sealing member, which receives a pressure difference between an upstream side and a downstream side of the pilot valve, remains unchanged from when the sealing member comes in contact with the pilot valve seat until when the sealing member is stopped by the stopper with the result that the sealing member has completely seated on the pilot valve seat. | 03-26-2015 |
20150096630 | ELECTROMAGNETIC VALVE - An electromagnetic valve according to one embodiment includes a driven member configured such that a piston and a valve element are vertically coupled with each other and configured such that a pilot passage runs through the driven member. Here, the piston separates a high-pressure chamber from a back pressure chamber. The valve element opens and closes a main valve by moving toward and away from a valve hole. The pilot passage communicates between a low-pressure chamber and the back pressure chamber. A communicating path, through which the high-pressure chamber and the back pressure chamber communicate with each other, is formed in the piston. The communicating path is formed such that an orifice, which is open to the back pressure chamber, and a communication hole, having a larger cross section than that of the orifice, are vertically connected with each other. The orifice is located above the communication hole. | 04-09-2015 |
20150129055 | Smart Actuator For Valve - A system and method of monitoring and controlling the open and close states of a manifold diaphragm type valve includes using an actuator mechanism with feedback control. A pressure transducer and/or force gauge located on the contact end of the actuator mechanism monitors the pressure and/or force applied to the end of the actuator mechanism. A controller instructs the actuator mechanism to move forward or backward an appropriate distance based on the monitored pressure and/or force. Temperature and pressure changes in the system and material changes to the diaphragm are sensed immediately and positioning correction is applied to the actuator in real-time, thereby maintaining the same valve state while monitoring pressure separately. The linear actuator functions as a ‘smart’ actuator, capable of fine tune adjustments without additional outside monitoring and providing a more accurate and reliable method of closing the valve in a dynamic environment. | 05-14-2015 |
20150144207 | HYDRAULIC CONTROL UNIT - A hydraulic control unit is provided. A valve is comprised of a piston having a valve element, a cylinder holding the piston while allowing to reciprocate axially, a positive pressure chamber formed on one side of the piston to which pressure to open the valve is applied, a back pressure chamber formed on the other side of the piston to which the pressure to close the valve is applied, and a connection passage for differentiating pressures in the positive pressure chamber and the back pressure chamber. A pilot valve selectively connects the back pressure chamber with a site where the pressure is lower than that of the back pressure chamber. Hydraulic pressure lower than that applied to positive pressure chamber is applied to a low pressure section. The hydraulic control unit comprises a means to deliver the fluid from the low pressure section to the back pressure chamber if an opening motion of the valve is slower than a predetermined reference value, by opening the pilot valve to connect the back pressure chamber with the low pressure section. | 05-28-2015 |
20150316172 | MICRO PILOT VALVE - The invention relates to a micro pilot valve | 11-05-2015 |
20150316937 | GAS PRESSURE CONTROLLER - A pressure controller is provided with an insulating substrate having a gas inlet and a gas outlet and including an inner channel, a valve mechanism including an MEMS valve element that is attached directly to a front surface or a back surface of the insulating substrate and that is connected to the inner channel via a port communicating with the inner channel, a pressure sensor section including an MEMS pressure sensor element that is attached directly to the front surface or the back surface of the insulating substrate and that is connected to the inner channel via a port communicating with the inner channel, and a control section for feedback-controlling the valve mechanism based on a detection signal of the pressure sensor section. | 11-05-2015 |
20150378370 | Valve Assembly and Fluidic System - A valve assembly for influencing at least one fluid flow, the valve assembly including a control unit and at least one valve device, wherein the control unit includes a bus interface for connection to a bus communication system for the reception of movement instructions, a processing device for processing the movement instructions into control commands for valve devices and at least one connecting device for the electric coupling of valve devices, and wherein the at least one valve device is electrically connected to one of the connecting devices of the control unit and includes a processing means designed for processing the control commands, wherein the processing means is assigned at least one first connecting means for the electric coupling of valves and at least one second connecting means for the electric coupling of sensor means, and wherein the processing means is designed for linking sensor signals of connected sensor means to the control commands. | 12-31-2015 |
20160004258 | Valve Assembly with Integral Sensors - A valve assembly includes an electronics housing and a valve housing assembly engaged to the electronics housing. The valve housing assembly includes a valve body defining a plurality of fluid ports in fluid communication with the valve bore. A plurality of fluid dampeners is disposed in the fluid ports. A sensor plate is engaged to the valve body. The sensor plate defines a plurality of sensor ports that are generally aligned with the fluid ports of the valve body. At least four fluid sensors are disposed in the plurality of fluid ports of the valve body. A cover is engaged to the sensor plate. The cover defines a cavity. A circuit board is disposed in the cavity of the cover. The circuit board is in electrical communication with the fluid sensors. | 01-07-2016 |
20160025176 | SOLENOID VALVE - A solenoid valve includes a valve seat provided in a main flow passage, a main valve body configured to open or close the main flow passage, a pilot passage that branches from the main flow passage, an orifice provided in the pilot passage, a back-pressure chamber connected to the pilot passage downstream from the orifice to bias the main valve body to a closing direction by virtue of an internal pressure, a pilot valve disposed in the pilot passage downstream from a connection point to the back-pressure chamber to control an internal pressure of the back-pressure chamber, a solenoid configured to control a valve opening pressure of the pilot valve, and a second orifice provided between the back-pressure chamber and the pilot valve. | 01-28-2016 |
20160033047 | BACK PRESSURE BLOCKING SLIDING VALVE - The present invention relates to a back pressure blocking sliding valve including: a valve body having a fluid inlet part, a fluid outlet part, and a fluid passing cavity; a mover with an upper part having a blocking plate for blocking the flow of the fluid under a back pressure, the mover being horizontally moved into the fluid passing cavity when blocking the back pressure; and a mover shifting unit for horizontally shifting the mover, wherein the fluid passing cavity of the valve is normally not blocked so as to allow a normal flow of the fluid, but when a back pressure is generated in the pipe system, the mover is horizontally shifted to a blocking position so as to make the blocking plate of the mover efficiently block the backflow of the fluid, even in a process in which powder is produced. | 02-04-2016 |
20160116919 | PNEUMATIC DETECTION OF MODULAR TOOLING CONNECTION - An apparatus includes a mechanical coupler portion and a pneumatic detection valve that is connected to the mechanical coupler portion, connectable to a source of pressurized air, and is moveable between a first position and a second position, wherein the pneumatic detection valve prevents communication of the pressurized air with atmosphere in the first position, prevents communication of the pressurized air with atmosphere in the second position, and leaks the pressurized air to atmosphere when in an intermediate position between the first position and the second position. | 04-28-2016 |
20160123833 | ELECTRICAL DETECTOR FOR LIQUID METAL LEAKS - A liquid metal leak detector system including a direct current (DC) power supply and a plurality of analog to digital converters connected to the DC power supply. Each converter includes a liquid metal switch, where the liquid metal switch is closed in event of a liquid metal leak since the liquid metal leak causes electrical continuity between a conductive sheeting and a housing for liquid metal. The converter also includes a comparator connected to both the liquid metal switch for converting an analog signal into a digital signal, wherein the digital signal is configured such that a high signal constitutes no leak and a low signal constitutes a leak. An AND gate is also connected to each of the plurality of converters for combining all of the digital signals output from the converters, the AND gate configured such that the AND gate outputs a high signal if all of its inputs are high and a low signal if any input is low. | 05-05-2016 |
20160132061 | ELECTRONIC PNEUMATIC PRESSURE CONTROLLER - An electronic device for controlling pressure regulators, enabling remote adjustments and corrections for pressure drops and supply line expansion is provided. | 05-12-2016 |
20160161956 | AUTOMATED RELIEF VALVE CONTROL SYSTEM AND METHOD - A pressure relief valve system for use in a downhole operation may include a pressure relief valve configured to relieve pressure from high pressure tubing extending between a pump and a wellhead, and may include a sensor operably disposed to detect pressure in the high pressure tubing. The pressure relief valve system also may include a controller having a pressure threshold stored therein. The controller may be configured to receive data from the sensor and compare the detected pressure to the stored pressure threshold. A valve actuation system may be in communication with the pressure relief valve and in communication with the controller. The valve actuation system may be configured to change the state of the pressure relief valve from a closed state to an open state in response to a command signal from the controller. | 06-09-2016 |
20160202708 | FLUID ACTIVATED FLOW CONTROL APPARATUS | 07-14-2016 |
20170234395 | VALVE ARRANGEMENT WITH IMPROVED FAILSAFE OPERATION | 08-17-2017 |
20170234449 | SOLENOID VALVE | 08-17-2017 |