A tub spout with a diverter mechanism includes a housing having an external surface and an internal cavity that includes a spout outlet. A water supply conduit is located within the internal cavity and provides a fluid path that is in fluid communication with the spout outlet. A push button extends outwardly of the external surface of the housing and is movable relative to the housing between a non-diverting position where water exits the spout outlet and a diverting position where water is prevented from exiting the spout outlet. A diverter gate is positioned within the internal cavity to selectively block the fluid path and is coupled for movement with the push button. A resilient member biases the push button to the non-diverting position.

A pair of air cylinders that cause a valve plate to perform an opening/closing operation each include a head-side air cushion mechanism and a rod-side air cushion mechanism. Each head-side air cushion mechanism includes a head-side communication path and a head-side restricting flow path that connect a head-side pressure chamber and a head-side main flow path in parallel, and a blocking mechanism that blocks the head-side communication path when a piston approaches a retreat stroke end, and each rod-side air cushion mechanism includes a rod-side communication path and a rod-side restricting flow path that connect a rod-side pressure chamber and a rod-side main flow path in parallel, and a blocking mechanism that blocks the rod-side communication path when the piston approaches an advance stroke end.

A valve position indicator for a valve includes an outer housing, actuation rod, indicator flag, and follower. The actuation rod is positioned within the outer housing, which is couplable to a tail stem protector of the valve. The actuation rod may have a helical slot formed therein. The actuation rod may be rotatably coupled to the outer housing. The indicator flag may be coupled to the actuator rod and may extend radially therefrom. The follower may be couplable to a tail stem of the valve. The follower may extend in a direction perpendicular to the extent of the tail stem. The follower may extend through a slot in the tail stem protector and into the helical slot of the actuation rod when the valve position indicator is coupled to the tail stem protector.

In a valve having a body with a sealed working fluid chamber, a bore and a valved fluid chamber, the valved fluid chamber having an inlet and outlet and a seat between the inlet and the outlet, a piston for extending through the bore from the working fluid chamber to the valved fluid chamber, a spring for biasing the piston away from the seat and a working fluid for receipt in the working fluid chamber. Applicant provides an improvement comprising a seal stack assembly for entrainment, under compression, upon the piston and in the piston chamber between a working fluid chamber end wall and a first end of the piston, wherein the first end of the piston is located in the working fluid chamber and a second end in the valved fluid chamber.

A pressing-controlled valve for fluid has a valve casing, valve seat, fixed valve plate, movable valve plate, driving piece, press structure and a pulling structure, wherein the valve seat is assembled on one end of the valve casing. The fixed valve plate, movable valve plate and driving piece are disposed in the valve casing. The fixed valve plate is in watertight contact with the valve seat, and the movable valve plate and valve plate overlap. A flow channel for fluid is formed among the valve seat, fixed valve plate and movable valve plate. The driving piece is in contact with the movable valve plate. The pulling structure includes a shaft lever and drawing piece. The press structure pulls the shaft lever to move, and the shaft lever pulls the drawing piece through a pull rod, so that the driving piece drives the movable valve plate to slide laterally.

The invention relates to a shut-off device for valve systems of industrial plants, in particular of chemical and petrochemical plants, with a disc (12) to shut off an opening for a fluid flow and with a seal seat (13a). The invention is characterised in that the disc (12) is arranged between the seal seat and a pressing means (26) to subject the disc (12) to a pressing force and can be pressed by the pressing means (26) against the seal seat (13a), wherein the pressing means (26) has in a housing (10) a plurality of pistons (48) and a transmission element for transmitting the pressing force to the disc (12), the transmission element being arranged between the pistons (48) and the disc (12) and extending along the disc circumference, and wherein the pistons (48) are fluidically connected by a feed line (49) for hydraulic fluid.

A gate valve (10) is provided and comprises: a valve body (12,14) including an aperture (20, 22); a gate (42) reciprocally movable within the body between a first position in which the aperture is occluded to a second position in which the aperture is open; a bearing member (36a, 36b) over which the gate moves in the body; and a loading member (30a, 30b) for urging the bearing member against the gate. The loading member comprises a lattice-like elastomeric mat (30a, 30b).

A ventilation valve (100) for ventilation of a tank (not shown) containing a liquid where the liquid surface fluctuates over time at the same time as the ventilation valve (100) obstructs external liquid to enter into the tank through the ventilation valve, is described. The ventilation valve (100) comprises a structural main housing (1, 2) containing a valve unit (3, 4, 5) and respective ventilation channels (6, 7, 9, 10, 13, 14, 16) providing open communication between the tank and the atmosphere, and the valve unit includes a movable float body (4) obstructing liquid ingress into the tank through said ventilation valve (100). The valve unit is in the form of a replaceable valve module which includes the float body (4) which is received in a valve housing (3). The structural main housing (1, 2) includes a socket part (2) and one from the socket part (2) releasable cover part (1) in order to provide access to the replaceable valve module (3, 4, 5).

A wedge-shaped gate valve with a branching part formed to be open in a direction orthogonal to an inner flow path of a valve box having a coupling part on both sides, and a valve disk ascends and descends from the branching part via a valve stem to open and close an annular valve seat surface. At a boundary between the coupling part and the branching part, a reinforcing thickened part having a cylindrical, cone, or truncated cone shape with a diameter gradually reducing from the branching part toward the coupling part side is provided, and the thickened part is formed by taking, as an outer shape, a cylinder, a cone, or a truncated cone with an axis P2 that is eccentric from a center line P1 of the flow path to the branching part side and is parallel to or crossing the center line P1 as a rotation axis.

A valve having a closure member which is pressed against a valve seat in a closed position and closes an opening, and having a first valve drive for moving the closure member along a first movement path back and/or forth between a maximum open position and an intermediate position, and having a second valve drive for moving the closure member along a second movement path back and/or forth between the intermediate position and the closed position. The first movement path and the second movement path are arranged in an angled manner with respect to one another. The valve additionally includes at least one locking device with at least one locking body which interacts with at least one inclined surface and/or comprises at least one inclined surface, wherein the locking body is movable relative to the closure member along a third movement path between a locking position and a releasing position.