The present disclosure provides a valve for a respiratory mask. The valve includes a valve housing including a valve seat and an inlet. The valve includes a valve flap at least partially received within the valve housing. The valve flap is sealingly engaged with the valve seat in a closed configuration and is disengaged from the valve seat in a plurality of open configurations. The valve flap includes a tubular projection extending away from the valve seat along a longitudinal axis. The plurality of open configurations includes a first open configuration and a second open configuration. The valve further includes a pin slidably received through the valve housing and coupled to the tubular projection. The pin and the valve flap are together movable along the longitudinal axis relative to the valve seat. The valve further includes a valve cage coupled to the valve housing.

Transmissions, filter assemblies for transmissions, and valve assemblies for transmissions are disclosed herein. A transmission includes an input shaft, an output shaft, and a hydraulic system. The input shaft is configured to receive rotational power supplied by a drive unit. The output shaft is coupled to the input shaft and configured to provide rotational power supplied to the input shaft to a load. The hydraulic system is configured to supply fluid to one or more fluid demand devices coupled between the input shaft and the output shaft in one or more operating modes of the transmission. The hydraulic system includes a filter assembly having a filter element and a valve assembly fluidly coupled to the filter element.

An exhaust valve for inflatable diving equipment includes a valve body having an annular peripheral flange providing a sealing stable connection with a band of material along the edge of a passage opening in the delimiting wall of a hollow body, and a cylindrical collar surrounded by the annular flange and provided with coupling members to corresponding coupling members of a cover cap of the valve body. The cylindrical collar internally defines an annular valve seat that surrounds an opening communicating with the hollow body and that cooperates with a shutter provided on the side of the valve seat opposite to the internal space of the hollow body and stably stressed, in the closed position, against the valve seat, by an elastic element interposed between a wall of the cover cap and the facing side of the shutter. Optional displacement organs move the shutter from the stable closed position of the valve to an open position. The cover cap covers the valve seat and the shutter toward the outside and has a passage opening coupled with an interception and/or a deflection screen of particles or other suspended material, leaving free or openable a discharge passage.

A compressor valve suitable for use in a compressor is provided. The compressor valve comprises a first body member and a second body member. The first body member and the second body member each define a set of suction flow passages in fluid communication with each other between the suction passage and a cylinder of the compressor, and a set of compression flow passages in fluid communication with each other between the cylinder and the discharge passage. The valve includes a suction seal and a compression seal, both located at least partially between the first body member and the second body member. The suction seal is movable between a closed position and an open position. The suction seal is biased to a closed position against the flow of fluid from the suction passage to the cylinder. The suction seal and the compression seal are biased by helical coil springs.

Transmissions, filter assemblies for transmissions, and valve assemblies for transmissions are disclosed herein. A transmission includes an input shaft, an output shaft, and a hydraulic system. The input shaft is configured to receive rotational power supplied by a drive unit. The output shaft is coupled to the input shaft and configured to provide rotational power supplied to the input shaft to a load. The hydraulic system is configured to supply fluid to one or more fluid demand devices coupled between the input shaft and the output shaft in one or more operating modes of the transmission. The hydraulic system includes a filter assembly having a filter element and a valve assembly fluidly coupled to the filter element.

The present application relates to a field of a connection valve, in particular to a connecting rod spring diaphragm check valve, which includes a valve body, and the valve body is defined with an internal fluid channel; It also includes a control component, which includes a movable rod, the movable rod is provided inside the valve body to block the fluid channel; the movable rod is provided with a blocking plate, the blocking plate is configured to block the movable rod from the fluid medium.

An adjustable compact check valve for a pneumatic self-inflating mattress. The compact check valve includes a preload selector which is adjustable to user selected settings, each of which will vary the load on a preload compression spring, to thereby vary the pressure at which the check valve opens. Such adjustment allows a user to vary the firmness of a self-inflating mattress to which the compact check valve is affixed. The compact check valve also has a fully closed position, where air cannot enter or leave the self-inflating mattress, and a fully open position, where air can enter the self-inflating mattress to allow it to fully inflate, or where a user can compress the mattress for storage, by expelling air from the self-inflating mattress. Once air has been expelled from the mattress, the compact check valve may be closed, to prevent inflation of the mattress.

A check valve for opening and closing an intake-side communication passage for fluid, includes a pump body including a partition wall in which the intake-side communication passage and a convex portion are formed, a valve body made of a flexible material, formed in a plate shape including an insertion hole, and configured to open and close the passage as being supported by the convex portion with the convex portion inserted into the insertion hole, and a push nut formed in a disk shape smaller than the valve body and including a hole into which the convex portion is inserted at a center part, and being locked to the convex portion locking the valve body to prevent the valve body from slipping off from the convex portion. An outer peripheral end part of the push nut being in contact with the valve body being formed in a curved surface shape.