Various valves capable of preventing distortion are disclosed. The valve comprises a metal member configured to have at least two sub metal members and a main body. Here, the sub metal members are included in the main body, and the main body is formed of plastic.

An ocean depth automatic compensation type full-ocean-depth hydraulic control water stop valve includes a valve body having an inlet and outlet on a side thereof; a valve sleeve assembly embedded in the valve body; and a valve core assembly. The valve sleeve assembly includes a spring cover; a pressure rod valve sleeve; a valve core cover; a valve seat; a pressing piece; a push rod valve sleeve base body; and a screw plug. The valve core assembly includes a pressure rod; a valve core; and a push rod.

A valve for use with a vessel drain tube includes a body extending along a longitudinal axis. The body has an outer surface and an inner surface defining a bore extending longitudinally from a first end to a second end. The valve includes an external seal on the outer surface of the body for sealing with the drain tube, at least one internal seal on the inner surface extending into the bore, a retaining member extending at least partially into the bore and being spaced from the internal seal, and a sealing member displaceable between the internal seal and the retaining member. The sealing member is configured to seal with the internal seal in a valve closed, first configuration and to not seal with the internal seal in a valve open, second configuration.

A top open cage may include a first outer diameter at a bottom portion, a second outer diameter smaller than the first outer diameter at a middle portion, a third outer diameter smaller than the second outer diameter at a top portion, a chamber internal to the bottom portion and at least a portion of the middle portion, a first set of inlets from an outer surface of the middle portion to a middle section of the chamber, and a second set of inlets from an outer surface of the middle portion to the top end of the chamber. The chamber may be defined by a first inner diameter at a bottom end of the chamber and a second inner diameter smaller than the first inner diameter at a top end of the chamber.

A valve manifold includes a manifold and a valve. The manifold has a recess, a first fluid port, and a second fluid port. The valve is disposed entirely within the recess and is fluidically interposed between the first fluid port and the second fluid port. The valve has a rotatable needle having an end that is configured to be displaced relative to a valve seat upon rotation.

A top open cage may include a first outer diameter at a bottom portion, a second outer diameter smaller than the first outer diameter at a middle portion, a third outer diameter smaller than the second outer diameter at a top portion, a chamber internal to the bottom portion and at least a portion of the middle portion, a first set of inlets from an outer surface of the middle portion to a middle section of the chamber, and a second set of inlets from an outer surface of the middle portion to the top end of the chamber. The chamber may be defined by a first inner diameter at a bottom end of the chamber and a second inner diameter smaller than the first inner diameter at a top end of the chamber.

A filter assembled in front of oil inlet hole of a pressure relief valve prevents contamination of the pressure relief valve. A pressure relief valve and filter assembly for a tensioner includes a pressure relief valve comprising a hollow pressure relief valve body defining a chamber, the pressure relief valve body having a first end with an aperture, a second end, and a length extending from the first end to the second end and a filter comprising a filter body and mesh connected to the filter body. The mesh is positioned relative to the aperture such that the mesh prevents contaminants from entering the pressure relief valve through the aperture.

A float valve for controlling a liquid level includes a valve main body which forms a throughflow duct, a valve narrowing which is formed by the throughflow duct, and a float mounted above the valve narrowing as a valve element. The valve element is freely movable, closes the valve narrowing via its weight, and is lifted from a valve closing position via a liquid. The float has a low center of gravity so that the float always rights itself to a standing position.

The invention relates to a ball valve (1) for a pipe system for conveying liquid or gaseous media, comprising a housing (3), which has a ball plug (4) and seat rings (5, 6). A hydraulic system (7), which is independent of the pressure of the liquid or gaseous medium flowing through the pipe system, is provided for changing the contact pressure of at least one of the seat rings (5, 6) against the ball plug (4).

A valve arrangement for a fuel injection system includes a first valve unit (42) having a first flow cross section (Q.sub.1) and a second valve unit (44) having a second flow cross-section Q.sub.2). The second valve unit includes at least two single valves (48), each of which has a single valve flow cross-section Q.sub.E). The second flow cross-section (Q.sub.2) is formed by a sum of the single valve flow cross-sections (Q.sub.E). A fuel injection system (10) incorporates such a valve arrangement (22).