The present invention relates to a valve to be used when blowing air into squeezing pads from a high pressure blower, such as a side duct blower, said valve comprising a valve chamber comprising a primary set of openings with a first opening connected to said high pressure blower and a second opening connected to said squeezing pads, whereby air can be transferred through said valve chamber between said squeezing pads and said high pressure blower, said valve chamber further comprising a third opening, whereby air from said first opening can pass through said third opening, and where air not passing through said third opening passes through said second opening, said valve further comprising a valve spool for blocking said third opening and thereby changing the amount of air passing through said third opening. The valve spool for blocking said third opening comprises a limiter element, wherein said limiter element and/or said third opening has a varying diameter along its longitudinal axis, where the limiter element is adapted to be inserted along its longitudinal axis in said third opening, and where the extent of insertion of said limiter element changes the amount of air passing through said third opening. The invention further relates to a lift head with the above valve.

A cool water discharging method and a switch valve includes a valve body and a valve spool. The valve body is disposed with a thermosensitive module, an inlet passage, a first outlet passage, and a second outlet passage. The valve body has a cool water discharging passage connected to the inlet passage, a discharging hole connecting the first outlet passage and the cool water discharging passage and an air suction hole connecting the second outlet passage and the cool water discharging passage. When discharging cool water, water flows to the cool water discharging passage rapidly, the air in the second outlet passage is absorbed to the cool water discharging passage. The residual cool water in the second outlet passage is absorbed to the cool water discharging passage through the air suction hole and discharged out with the residual cool water in the first outlet passage.

Valves. At least some of the example valves include: a valve body; a valve housing; and a piston that defines a proximal end and a distal end, the piston disposed in a piston bore of the valve housing. The valve defines a closed orientation by a first rotational orientation of the valve housing relative to the valve body, and the valve defines an open orientation by a second rotational orientation of the valve housing distinct from the first rotational orientation.

A temperature response valve is disclosed. The valve has a body with an outside surface and an outlet. The valve has a sleeve that partly engages the outside surface of the valve body to direct, via channels on an inner surface of the sleeve, water flowing out of the valve body outlet. The water is held into contact with part of the outer surface and expelled at a removed end of the sleeves where the channels open to the environment. The valve engages the threads on a threaded male member of an outside faucet.

The invention relates to a valve device (1) for controlling media flows of any type by means of at least one valve control piston (33), which is guided in a longitudinally movable manner in a valve housing (3) and which controls a media connection between at least two media connection points (9, 11) in the valve housing (3), of which at least one media connection point is a pressure supply inlet (P) and at least one other media connection point is a load outlet (A), wherein the valve control piston (33) is guided in the valve housing (3) with pressure equalization by means of at least one equalizing apparatus (35) at least with respect to the media pressure at the respective pressure supply inlet (P).

An example apparatus includes a valve body defining a fluid flow passageway between an inlet and an outlet, a cage disposed in the fluid flow passageway, a plug disposed in the cage, a retainer collar coupled at an end of the plug, where an exterior surface of the retainer collar includes a first engagement surface having a first non-circular cross-section, and an anti-rotation collar coupled at an end of the cage, where the anti-rotation collar has a second engagement surface defining an aperture to receive the retainer collar, where the aperture has a second non-circular cross-section, where the engagement surfaces interact to inhibit rotation of the retainer collar and the plug.

A two-stage seal, such as a ring seal for use in a pressurized process fluid line, has a dynamic sealing member and a static sealing member. The dynamic sealing member is arranged to continuously sealingly engage against a seal surface that slides along the dynamic sealing member. The static sealing member is arranged to sealingly engage against the seal surface in response to an increased process fluid pressure within the process fluid line to increase static seal pressure against the seal surface. The static sealing member is also arranged to release from the seal surface to minimize friction with the seal surface when the process fluid pressure drops and/or in response to movement of the seal surface. The two-stage seal may be used in arrangements requiring both dynamic sealing and static sealing, such as in some process control valves. A process control valve having the two-stage seal is disclosed.

A piston includes a main body extending between a first end and a second end along a center axis of the piston. The main body further includes a chamber formed within the main body, the chamber having an opening disposed at the first end of the main body. The piston also includes a cap, the cap being coaxial with the main body. A portion of the cap extends into the opening of the chamber of the main body. At least one of the main body and the cap includes a radially extending lip, and the other of the main body and the cap includes a groove. A retaining ring is both disposed partially in the groove and in contact with the radially extending lip so as to connect the cap to the main body.

A spool assembly is disclosed for use in a valve. The spool assembly may have a cylindrical body with a first end, a second end, and a bore passing from the first end through the second end. The spool assembly may also have a first insert with a first land slidably disposed inside the bore at the first end, and a second insert separate from the first insert. The second insert may have a second land slidably disposed inside the bore at the second end.

A piston includes a main body extending between a first end and a second end along a center axis of the piston. The main body further includes a chamber formed within the main body, the chamber having an opening disposed at the first end of the main body. The piston also includes a cap, the cap being coaxial with the main body. A portion of the cap extends into the opening of the chamber of the main body. At least one of the main body and the cap includes a radially extending lip, and the other of the main body and the cap includes a groove. A retaining ring is both disposed partially in the groove and in contact with the radially extending lip so as to connect the cap to the main body.