This disclosure relates to a valve comprising a housing, an actuating shaft and a plurality of groups of valve body elements. The plurality of groups of valve body elements are disposed in the housing and capable of rotating in the housing. The actuating shaft is configured to selectively actuate at least one group of valve body elements in the plurality of groups of valve body elements to rotate. The valve is provided with a plurality of fluid passages therein, and the actuated at least one group of valve body elements can connect or disconnect at least one of the plurality of fluid passages. The valve provided by the present disclosure can control and switch more fluid passages when an output power of an actuating device is limited.

A ball valve assembly includes a ball element arranged to be rotated by rotation of a shaft in engagement with the ball element, the ball element having first and second flow channels defined therethrough, a first inlet port at a first end of said first flow channel, a first outlet port at a second end of the first channel, a second inlet port at a first end of the second flow channel and a second outlet port at a second end of the second channel.

A valve apparatus, in particular for a cooling system of a vehicle, includes a housing having at least two fluid connectors, a valve device which can be adjusted at least between a first valve position and a second valve position, and a drive for adjusting the valve device between the first valve position and the second valve position. The valve apparatus includes a fail-safe adjustment device in order to transfer the valve device from the first valve position into the second valve position in the event of an incident in which the power supply, in particular that of the vehicle, is interrupted.

A modular electro-mechanical rotary valve (EMRV) designed to be installed and removed as a unit is provided. The modular EMRV includes a valve enclosure, at least one rotary valve body with at least one fluid pathway, and an actuator assembly. The valve enclosure, removably disposed within a mating cavity, includes at least one inlet, at least one outlet, and a hollow center. At least one of the at least one inlet or the at least one outlet is configured with at least one exterior seal interface to sealingly engage with at least one interior seal interface of the mating cavity. The actuator assembly, engaged with an actuator interface of the at least one rotary valve body, rotationally actuates the at least one rotary valve body disposed within the hollow center of the valve enclosure.

A hydraulic tool can include a hydraulic cylinder, a piston within the hydraulic cylinder, and a rotary valve. The piston can be configured to move between a retracted position and an extended position. The piston can include a piston ram and a piston rod that define a ram side and a rod side inside the hydraulic cylinder. The rotary valve can be moved between a first position and a second position. The first position can be configured to direct flow at a first variable speed and a first variable force to the ram side of the hydraulic cylinder and the second position can be configured to direct flow at a second variable speed and a second variable force to the rod side of the hydraulic cylinder.

A controlling mechanism for a three-way valve includes a transmission axis movably received in the valve and having first teeth formed on a free end thereof. A rotation axis is movable and intermittently rotatable in the valve and having second teeth integrally formed on the rotation axis to correspond to the first teeth. A spring is received inside the valve to provide a recoil force to the rotation axis to maintain the second teeth of the rotation axis to be in contact with the first teeth of the transmission axis so that movement of the transmission drives the rotation axis to move and rotate simultaneously for selectively blocking the inlet of the valve.

The disclosure relates to a valve (20) for use with breathing assistance apparatus. The valve comprises: a valve body (25) defining first, second and third ports (21, 22, 23); a valve core (27) defining a ported chamber (40) rotatable about a valve axis (28) between: a first stable configuration in which the ported chamber provides fluid communication between the first port and the second port and isolates the third port from the first and second ports; and a second stable configuration in which the ported chamber provides fluid communication between the first port and the third port and isolates the second port from the first and third ports, wherein an outer surface (34) of the valve core is configured to engage with an inner surface (32) of the valve body to define a detent for resisting rotation of the valve core between the first stable configuration and the second stable configuration; and an actuator (30) configured to overcome the detent to rotate the valve core between the first and second stable configurations.

A controlling mechanism for a three-way valve includes a transmission axis movably received in the valve and having first teeth formed on a free end thereof A rotation axis is movable and intermittently rotatable in the valve and having second teeth integrally formed on the rotation axis to correspond to the first teeth. A spring is received inside the valve to provide a recoil force to the rotation axis to maintain the second teeth of the rotation axis to be in contact with the first teeth of the transmission axis so that movement of the transmission drives the rotation axis to move and rotate simultaneously for selectively blocking the inlet of the valve.

A modular electro-mechanical rotary valve (EMRV) designed to be installed and removed as a unit is provided. The modular EMRV includes a valve enclosure, at least one rotary valve body with at least one fluid pathway, and an actuator assembly. The valve enclosure, removably disposed within a mating cavity, includes at least one inlet, at least one outlet, and a hollow center. At least one of the at least one inlet or the at least one outlet is configured with at least one exterior seal interface to sealingly engage with at least one interior seal interface of the mating cavity. The actuator assembly, engaged with an actuator interface of the at least one rotary valve body, rotationally actuates the at least one rotary valve body disposed within the hollow center of the valve enclosure.

A rotary shear valve includes a valve body, a first pair of teeth extending radially from the valve body in a first angular direction, a second pair of teeth extending radially from the valve body in a second angular direction, and a shear seal disc.