Abstract:
A rotary wastegate valve (48) includes a valve seat (50) having an opening (58), a valve shaft (80) that extends in a direction normal to a surface of the valve seat (50) and is offset relative a valve plate centroid (C), and a valve plate (90) driven by the valve shaft (80) to rotate relative to the valve seat (50). Rotation of the valve shaft (80) moves the valve plate (390) between a first position in which the valve plate (390) overlies the opening (58) and closes the opening (58), and a second position in which the opening (58) is at least partially open. The rotary wastegate valve (48) can be used to control exhaust gas flow through the turbine section (20) of an exhaust gas turbocharger (1).
Abstract:
Réservoir (R) de stockage pour le stockage de liquides, au moins une vanne (1)de remplissage et/ou de vidange étant montée sur le réservoir (R), un dispositif d'obturation (6) étant placé entre le réservoir (R) et la vanne (1).
Abstract:
Apparatus, methods and systems are provided for sealing a door of a slit valve. The invention includes a seal, adapted to extend along a perimeter of a slit valve door; and a hard stop, disposed between the seal and an outer edge of the slit valve door, and adapted to extend along at least a portion of the length of the seal, wherein the hard stop and the seal fill at least a portion of a gap between the slit valve door and a substrate sealing surface. Numerous other aspects are provided.
Abstract:
A valve assembly including a housing having a flow channel, a slide plate movable between a closed position and an opened position, and a seal ring surrounding the flow channel and engaging the slide plate in the closed position and disengaging the slide plate in the opened position. The seal ring has a plurality of bores aligned, respectively, with holes formed in an adjacent surface of the housing. Each bore includes an undercut defining a lip. A plurality of fasteners are arranged in the holes of the annular surface of the housing and extend into the corresponding bores of the seal ring. Side walls of the fasteners include slots, which catch on the lips of the bores of the seal ring when the fasteners are inserted into the bores of the seal ring, and the seal ring is rotated.
Abstract:
A valve assembly including a housing having a flow channel, a slide plate movable between a closed position and an opened position, and a seal ring surrounding the flow channel and engaging the slide plate in the closed position and disengaging the slide plate in the opened position. The seal ring has a plurality of bores aligned, respectively, with holes formed in an adjacent surface of the housing. Each bore includes an undercut defining a lip. A plurality of fasteners are arranged in the holes of the annular surface of the housing and extend into the corresponding bores of the seal ring. Side walls of the fasteners include slots, which catch on the lips of the bores of the seal ring when the fasteners are inserted into the bores of the seal ring, and the seal ring is rotated.
Abstract:
A dual pendulum valve assembly (100) including a housing (112) having an interior space (14) and first and second openings (22, 24) through which fluid can enter and exit the interior space; valve seats disposed in the interior space around the edges of the openings; and first and second pendulum valves (16, 116) for opening and closing, respectively, the first and second openings. Each pendulum valve is independently movable and includes a valve body (26, 126) mounted relative to the housing so that the valve body is movable between a completely opened position wherein fluid is allowed to pass through its respective opening and a completely closed position wherein the valve body seals the opening so that fluid can not pass therethrough. Each pendulum valve also includes a shaft fixedly (28, 128) coupled to the valve body through at least one pivot arm (30, 130) and at least partially mounted within the housing so that the valve body can rotate about a longitudinal axis (32) of the shaft between a first angular position where the first valve body is in the completely opened position and a second angular position where the valve body is substantially axially aligned with its respective opening, and move substantially parallel to the longitudinal axis of the shaft, so that the valve body can move between the second angular position and the completely closed position as the pendulum valve continues to rotate. The present disclosure also provides a method of precisely controlling vacuum pressure within a process chamber of a semi-conductor wafer fabricator.
Abstract:
A subsea rotary gate valve comprising a valve body (110), wherein the valve body defines a fluid flow pathway (101), a closure member cavity (102), and a stem cavity (103), a closure member (120) disposed in the closure member cavity, and a stem (130) disposed in the stem cavity, wherein the stem is connected to the closure member and associated systems.
Abstract:
Ventil (1), insbesondere Vakuumventil, mit zumindest einem Ventilgehäuse (2) und zumindest einem Verschlussorgan (3) und zumindest einem Ventilsitz (4), wobei der Ventilsitz (4) zumindest eine Ventilöffnung (5) des Ventils (1) umgibt und das Verschlussorgan (3) von zumindest einem Verschlussorganantrieb (6, 7) zwischen zumindest einer Öffnungsstellung, in der das Verschlussorgan (3) die Ventilöffnung (5) zumindest teilweise freigibt, und einer Schließstellung, in der das Verschlussorgan (3) mit einer Dichtfläche (8) des Verschlussorgans (3) zum Verschließen der Ventilöffnung (5) an den Ventilsitz (4) angedrückt ist, hin und her bewegbar ist, wobei zumindest eine Oberfläche (9) des Ventils (1) eine gemittelte Rautiefe RZ kleiner oder gleich 0,4 um, vorzugsweise kleiner oder gleich 0,25 um, aufweist.
Abstract:
A pendulum gate valve (10) including an expandable gate (12) which pivots when unexpanded to selectively block a vacuum or other pressure-differential passage (20). The valve includes a valve plate (56) sealing one side of the passage and a ring (88) or barrier plate (154) abutting an opposed side of the passage when the gate member is expanded. A compression spring (106) biases apart the valve plate and ring to close the valve by means of respective two-stage hangers attached thereto, extending along the spring, and having distal ends capturing the spring. Pneumatic pressure (116) applied to a pneumatic cavity (114) formed between the middles of the two-stage hangers (66, 102) and accommodating the spring forces apart the valve plate and ring to open the valve in the blocking position. Thereby if pressure fails, the valve fails to a sealed state. The axially movable valve or barrier plate is advantageously water cooled (60) to allow use with a heated processing chamber.