Patent application number | Description | Published |
20100090146 | VALVE SEALING ARRANGEMENTS AND METHODS - A valve includes a valve body, a valve element to selectively control flow through the valve, and a seal member and seat member together providing a fluid-tight seal between a valve cavity and a fluid passage in the valve body. A live-loaded biasing member is adapted to apply a live-loaded sealing force to the seat member to bias the seat member toward sealing engagement with the valve element. When the pressure in the fluid passage exceeds the pressure in the valve cavity, an unbalanced passage pressure load biases the seat member toward sealing engagement with the valve element. When the pressure in the valve cavity exceeds the pressure in the fluid passage, an unbalanced cavity pressure load biases the seat member toward sealing engagement with the valve element. The live-loaded sealing force is in parallel with each of the unbalanced passage pressure load and the unbalanced cavity pressure load. | 04-15-2010 |
20110308655 | CLAMP RING FOR WELDED DIAPHRAGMS - A diaphragm sealed flow cavity comprises a first body comprising a support surface, a diaphragm comprising an outer portion that is joined by a weld to the first body, a clamped portion, and an inner portion that is movable along an axis, with the clamped portion of the diaphragm being compressed between the bearing surface and the support surface. The diaphragm sealed flow cavity may include a cylindrical body having a crimped portion for joining the cylindrical body to the first body. The diaphragm sealed flow cavity may also include a member that applies a live load to the clamped portion of the diaphragm. In the exemplary embodiments, the diaphragm sealed flow cavity may be realized as part of a diaphragm flow control valve having a valve body, diaphragm and a housing. | 12-22-2011 |
20140103240 | ACTUATOR WITH DUAL DRIVE - A manually operated actuator is provided with an over-travel feature. The over-travel feature may be realized with a controlled thread backlash or with a biasing member such as a Belleville spring. When used with a flow control device such as a diaphragm valve, the over-travel feature allows the valve to open and close at actuator positions other than full stop positions. Embodiments for manual actuators and hybrid actuators are presented. | 04-17-2014 |
20140130904 | ACTUATOR WITH VISUAL INDICATOR SLEEVE - A device, for example a flow control device, and actuator or both are provided with a heat shrinkable sleeve about an exterior surface of a housing for the device. The heat shrinkable sleeve may contain indicia or information relating to the device. The heat shrinkable sleeve may also be used to contain fluid and contaminants that escape from the device from exposure to an environment that is exterior the heat shrinkable sleeve. The housing may include structure that retains the heat shrinkable sleeve in an installed position. Such structure may be, for example, a recessed surface, a flange, a crimp or other structure. | 05-15-2014 |
20140191149 | CLAMP RING FOR WELDED DIAPHRAGMS - A diaphragm sealed flow cavity comprises a first body comprising a support surface, a diaphragm comprising an outer portion that is joined by a weld to the first body, a clamped portion, and an inner portion that is movable along an axis, with the clamped portion of the diaphragm being compressed between the bearing surface and the support surface. The diaphragm sealed flow cavity may include a cylindrical body having a crimped portion for joining the cylindrical body to the first body. The diaphragm sealed flow cavity may also include a member that applies a live load to the clamped portion of the diaphragm. In the exemplary embodiments, the diaphragm sealed flow cavity may be realized as part of a diaphragm flow control valve having a valve body, diaphragm and a housing. | 07-10-2014 |