According to one embodiment a gas pressure regulator valve is provided that includes a valve body with an inlet gas conduit and an outlet gas conduit, a pressurized gas chamber into which the inlet gas flows after passing through a regulation valve and which is in fluid communication with the outlet gas conduit. The valve also includes a diaphragm having a central protuberance which houses a valve member. A closure cap closes the valve body. Adjusting means is provided for adjusting the regulated nominal pressure of the gas output from the regulator valve. An air chamber and the pressurized gas chamber are delimited in part by the diaphragm which is assembled and fixed between the valve body and the closure cap having the possibility of being axially displaced. The regulator valve further includes a rigid cover which covers the central protuberance, cooperating the cover with the closure cap in the event of an unexpected high pressure of the inlet gas to limit the displacement of the diaphragm.

A resiliently mounted valve body has a sealing face and, by way of spring arms, is resiliently-elastically connected to a holding ring which encompasses the valve body in at least one position, so that the valve body is repositionable in a parallel manner in the axial direction. The holding ring is in one piece with and materially integral to a latching body for fastening a check valve element in a latching manner in a fluid-conducting installation of a check valve assembly. The latching body extends in the axial direction, facing away from the valve body, and has at least one latching protrusion which is resiliently-elastically repositionable in the radial direction.

A resiliently mounted valve body has a sealing face and, by way of spring arms, is resiliently-elastically connected to a holding ring which encompasses the valve body in at least one position, so that the valve body is repositionable in a parallel manner in the axial direction. The holding ring is in one piece with and materially integral to a latching body for fastening a check valve element in a latching manner in a fluid-conducting installation of a check valve assembly. The latching body extends in the axial direction, facing away from the valve body, and has at least one latching protrusion which is resiliently-elastically repositionable in the radial direction.

A relief valve provides pressure relief when a fluid line exceeds a predetermined pressure. The valve includes a body which defines a cavity between inlet and outlet flowpaths. The valve includes a lever arm, which pivots around a pivot point as the valve changes between open and closed positions. A plunger assembly is disposed in the cavity and seals the cavity from the inlet and outlet flowpaths in the closed position. Fluid pressure from the inlet flow path causes the plunger assembly to contact the lever arm to urge the lever arm to rotate. The lever arm engages a spring at a further distance from the pivot point than the plunger assembly, the spring resisting pivoting of the lever arm and urging the valve to remain in the closed position unless a predetermined pressure is exceeded.

A method of manufacturing a check valve may include forming an upper housing as cylindrical body with (i) an internal surface including an upstream internal surface and a downstream internal surface having a projection and (ii) an external surface, forming a T-shaped filter member and mounting the T-shaped filter member in the internal surface of the upper housing. The method may further include forming a lower housing with a support portion at a central portion thereof, mounting a flexible valve member on the support portion, and coupling the upper housing with T-shaped filter member mounted therein onto the lower housing with flexible valve member mounted therein such that the T-shaped filter member is disposed upstream of the flexible valve member.

A check valve may include an upper housing defining an inlet, a lower housing defining an outlet, and a cavity interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet. The check valve may further include a flexible valve member mounted in the cavity to selectively permit fluid flow in a first direction, and prevent fluid backflow in a second direction opposite to the first direction. A filter member may be mounted in the upper housing, upstream of the flexible valve member. The filter member may have an elongated portion configured to maximize surface area thereof exposed to the fluid flow, and restrict passage of undesirable matter in fluid flowing through the check valve.

A check valve may include an upper housing defining an inlet, a lower housing defining an outlet, and a cavity interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet. The check valve may further include a flexible valve member mounted in the cavity to selectively permit fluid flow in a first direction, and prevent fluid backflow in a second direction opposite to the first direction. A filter member may be mounted in the upper housing, upstream of the flexible valve member. The filter member may have an elongated portion configured to maximize surface area thereof exposed to the fluid flow, and restrict passage of undesirable matter in fluid flowing through the check valve.

[Problem]

To provide a check-valve in which the occurrence of damage such as tearing, deformation, etc., can be suppressed.

[Solution]

A check-valve opens and closes an opening provided in a main body and prevents a backflow of a fluid passing through the opening; and the check-valve includes a base part 71 which is flexible, and a valve part 72 which opens and closes the opening, has a thickness thinner than a thickness of the base part 71, and is connected to the base part 71 in a state in which a periphery of the valve part 72 is surrounded with the base part 71. The valve part 72 seals the opening in a normal state of the valve part 72 being pre-urged toward the main body by an elasticity of the base part 71, and opens the opening when the fluid passes through the opening in one direction.

A male external incontinence device comprising a drainage tube assembly having a proximal chamber in fluid communication with a drainage tube, the proximal chamber comprising an atmospheric equilibrium valve assembly. The atmospheric equilibrium valve assembly has an airway conduit with a upper portion in fluid communication with the proximal chamber, and a lower portion having an air inlet chamber. A one-way air valve disposed in the airway conduit above the air inlet chamber, the one-way air valve comprising a first pair of opposing walls disposed at a first set of opposing angles such that the first pair of opposing walls abut each other at an apex, the apex having a self-sealing slit.

A bi-directional valve has an inlet with an outlet that may interchangeably applied to a pressure source and still operate properly. A spring applies a bias to a concave diaphragm against a cover plate in a non-relieving configuration to seal an inlet relative to an outlet. The cover plate may have ports with a shallower attack angle than prior art designs. Those ports may also have different shapes to facilitate significantly more flow permitting at least some better performance characteristics than prior art designs.