| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 251315080 | Including trunnion opposite axially extending actuating means | 9 |
| 20110024662 | TRUNNION-MOUNTED BALL VALVE WITH A FLEXIBLE VALVE SEAT - A trunnion-mounted ball valve, comprising, a valve body including a central body and two opposite tubular sections, the central body having a body cavity and the tubular sections having respective ducts with a common longitudinal axis and respective inner ends facing said body cavity, a trunnion mounted ball rotatably connected to the valve body and rotatable about an axis of rotation orthogonal to said longitudinal axis between an open position and a closed position, the ball having a through hole which is aligned to said ducts in the open position and transversal to said ducts in the closed position, a first and a second seat ring each of which has a guide portion slidably engaging a respective tubular section in the direction of said longitudinal axis and a head portion having a valve seat, the valve seats of the first and second seat rings abutting on opposite sides of said ball, wherein the head portion of at least one of said seat rings has at least one annular groove directed radially with respect to said longitudinal axis, wherein a backup ring is housed in said annular groove and is associated to an elastic preloading device arranged to apply between the seat ring and said backup ring elastic forces parallel to said longitudinal axis, said elastic preloading device acting in correspondence with two opposite angular sectors (α) of said backup ring, each of said angular sectors (α) being symmetric with respect to a diametric axis of said backup ring orthogonal to said axis of rotation | 02-03-2011 |
| 20110049408 | BALL VALVE STEM RETAINING SYSTEM - A system, in certain embodiments, includes a ball valve including a body and a ball disposed within the body. The ball valve also includes a stem disposed within an opening in the ball. The stem is removable by passage through the opening into a bore of the ball. | 03-03-2011 |
| 20110147635 | TRUNNION-MOUNTED BALL VALVE WITH REVERSE-PISTON EFFECT - A trunnion-mounted ball valve, comprising a valve body including a central body and two opposite tubular sections, the central body having a body cavity and the tubular sections having respective ducts with a common longitudinal axis (A) and respective inner ends facing said body cavity, a trunnion-mounted ball rotatably connected to the valve body and rotatable about an axis of rotation orthogonal to said longitudinal axis between an open position and a closed position, the ball having a through hole which is aligned to said ducts in the open position and transversal to said ducts in the closed position, a first and a second seat ring each of which has a guide portion slidably engaging a respective tubular section in the direction of said longitudinal axis and a head portion, wherein one of said seat rings has a ball-side seal provided on said head portion, which establishes a sealing contact between the seat ring and the ball along a ball-side sealing diameter, and a body-side seal, provided on said guide portion, which establishes a sealing contact with a respective tubular section on a body-side sealing diameter, wherein the ball-side sealing diameter and the body-side sealing diameter are constant, wherein the ball-side sealing diameter is greater than the body-side sealing diameter. | 06-23-2011 |
| 20130200286 | HIGH PRESSURE BALL VALVES AND RELATED SYSTEMS AND METHODS OF USE - Disclosed herein is an improved ball valve with trunnions connected to impact turn wheels. The trunnions are affixed to the ball of the ball valve mechanism. The improved ball valve impact turn wheels will generate increased torque which will allow improved operation of a ball valve in high pressure applications. | 08-08-2013 |
| 20130214189 | BALL VALVE ENCLOSURE AND DRIVE MECHANISM - A ball valve assembly includes an enclosure for supporting the ball valve during actuation. In one embodiment, the enclosure can be a split enclosure, and can have trunnion support apertures for engaging trunnions on the ball valve. In one embodiment, a pair of link arms are used to transfer force from a pair of actuation members to the ball valve. The link arms can be located in a recess on the actuation members, such the actuation members and the face of the trunnions define a cavity to enclose and protect the link arms. | 08-22-2013 |
| 20130292595 | VALVE STEM ASSEMBLY FOR ROTARY VALVE AND METHOD - A valve body defines a valve stem opening. A valve stem comprises an enlarged portion greater than the valve stem opening to thereby secure the valve stem within the valve body by limiting radially outward movement of the valve stem with respect to the valve body. A rotary member comprise upper and lower bosses. Upper and lower split trunnions, with split components that can be inserted from opposite sides of the valve body, are used to rotationally support the upper and lower bosses to permit rotation of the rotary member while preventing axial movement of the axial flow path of the valve. | 11-07-2013 |
| 20130306898 | Elongated Trunnion for High Pressure Ball Valves - A ball valve comprises a ball rotatably disposed within a housing, and a trunnion plate supporting the ball. The trunnion plate comprises a trunnion plate hole, and a trunnion plate shoulder disposed on a surface of the trunnion plate about the trunnion plate hole, where the trunnion plate shoulder has a length in the axial direction of the ball valve that is greater than a width in the radial direction of the ball valve. | 11-21-2013 |
| 20150008351 | BALL VALVE AND METHOD OF ASSEMBLING THE SAME - A ball valve has trunnions that comprise shaft portions and larger diameter bearing portions. The larger bearing portions ensure that bearing pressures will be low. Smaller shaft portions reduce material costs and minimize the overall size of the valves. Preferably the bearing portions are formed out of a different material than are the shaft portions. This allows the bearing portions to be formed out of a lower strength (and therefore lower cost) material. Conversely, it also allows the shaft portions to be formed out of a higher strength material to thereby minimize the size of the trunnion shafts without impacting the bearing size and cost. Additionally, each bearing portion is preferably a cylindrical sleeve and is preferably heat-shrunk around part of the shaft portion. | 01-08-2015 |
| 20150008352 | VALVE WITH TRUNNIONS AND METHOD OF ASSEMBLING THE SAME - A valve has trunnions that comprise shaft portions and larger diameter bearing portions. The larger bearing portions ensure that bearing pressures will be low. Smaller shaft portions reduce material costs and minimize the overall size of the valves. Preferably the bearing portions are formed out of a different material than are the shaft portions. This allows the bearing portions to be formed out of a lower strength (and therefore lower cost) material. Conversely, it also allows the shaft portions to be formed out of a higher strength material to thereby minimize the size of the trunnion shafts without impacting the bearing size and cost. Additionally, each bearing portion is preferably a cylindrical sleeve and is preferably heat-shrunk around part of the shaft portion. | 01-08-2015 |
