A valve, which is rotated about a rotational axis, includes a valve outer peripheral portion. The valve outer peripheral portion has a valve inflow port for supplying fluid to a flow passage of the valve outer peripheral portion and valve outflow ports for discharging the fluid from the flow passage. The valve outflow ports include: a main outflow port which is configured to communicate with a whole of a seat opening of a valve seat; and a plurality of intermediate outflow ports, each of which is configured to communicate with a portion of the seat opening. An axial dimension of each intermediate outflow port, which is measured in an axial direction of the rotational axis, is smaller than an axial dimension of the seat opening, which is measured in the axial direction. The axial dimension of each intermediate outflow port is progressively changed in a circumferential direction.

A valve for use with breathing assistance apparatus comprises first, second and third ports (21, 22, 23) for respective connection to a patient breathing tube, a first ventilation apparatus and a second ventilation application. The valve includes a bistable valve mechanism having a first stable configuration in which the first port is in fluid communication with the second port and not the third port; and a second stable configuration in which the first port is in fluid communication with the third port and not the second port. The valve has an actuator configured to transition the bistable valve mechanism between the two stable configurations and preventing the valve mechanism from maintaining a stable intermediate position between the first and second stable configurations. In this way a patient may be switched from one ventilation apparatus to another ventilation apparatus without sudden loss of pressure in the disconnecting circuit causing potentially infected aerosols to be released, and the without sudden loss of positive end expiratory pressure to the patients lungs.

A valve system comprising a valve chamber at a junction of an inlet port, an outlet port and a bypass port, the inlet port configured for fluid communication with exhaust gas, the outlet port configured for fluid communication with an inlet of a turbine, and the bypass port configured for fluid communication with an exhaust aftertreatment device; a rotary valve comprising a valve rotor which rotates about a valve axis within the valve chamber between a first position to permit gas flow through the bypass port and a second position to block gas flow. At least one of the valve rotor and the valve chamber comprises a protrusion and the other comprises a recess, wherein, in the first position, the protrusion and recess are spaced from one another, and, in the second position the recess receives the protrusion such that gas flow between the protrusion and recess is substantially prevented.

A valve system comprising a valve chamber at a junction of an inlet port, an outlet port and a bypass port, the inlet port configured for fluid communication with exhaust gas, the outlet port configured for fluid communication with an inlet of a turbine, and the bypass port configured for fluid communication with an exhaust aftertreatment device; a rotary valve comprising a valve rotor which rotates about a valve axis within the valve chamber between a first position to permit gas flow through the bypass port and a second position to block gas flow. At least one of the valve rotor and the valve chamber comprises a protrusion and the other comprises a recess, wherein, in the first position, the protrusion and recess are spaced from one another, and, in the second position the recess receives the protrusion such that gas flow between the protrusion and recess is substantially prevented.

An integrated valve and manifold assembly includes a water valve configured to control water flow from one or two valve outlets. At least one of the outlets is coupled to a manifold. In some examples, the manifold is a dual-extrusion manifold having at least one air channel and at least one water conduit, and the water valve has a pair of air channels attached to a periphery of the water valve and configured to couple to the manifold air channels. In examples wherein at least one of the manifolds is a dual-extrusion manifold, a top portion of the assembly includes an air valve configured to control flow of air to air channel(s) of the dual-extrusion manifold. In other examples, the assembly includes a one-outlet or two-outlet water valve configured to couple to water manifolds, with no attached air channels or air valves.

A sanitary fitting with a fitting body with a hollow cylindrical mixing shaft chamber in which a mixing shaft is rotatably supported about an axis of rotation. A hot and cold water inlet and a mixed water outlet open into the hollow cylindrical mixing shaft chamber, and wherein the mixing shaft has a control contour on the outer circumference which delimits a mixing chamber, which as a function of the rotational position of the mixing shaft fluidically connects the hot water inlet and/or the cold water inlet to the mixed water outlet in order to adjust a mixed water temperature. The mixing chamber of the mixing shaft is fluidically decoupled from the hot water or cold water inlet port while forming a fluid-tight valve gap between a sealing surface of the control contour of the mixing shaft and the inner peripheral wall of the hollow cylindrical mixing shaft chamber.

A rotary valve is provided including a housing with an inner chamber having a first inlet, a first outlet, a second inlet, and a second outlet. A valve body is rotatably positioned in the housing. The valve body includes at least one isolated fluid pathway that, depending upon a rotational position of the valve body, provides at least one of a direct connection of one or more of the inlets to one or more of the outlets, or permits flow from at least an other one of the inlets or the outlets that are not in the direct connection created by the at least one isolated fluid pathway into or from the inner chamber. At least one actuator controls the position of the valve body.

A multi-way valve includes an upper valve body, a lower valve body and a rotary valve core. The upper valve body and the lower valve body are provided respectively with an upper mounting hole and a lower mounting hole. The rotary valve core is provided passing through the upper mounting hole and the lower mounting hole, respectively. The rotary valve core is formed with a first stepped surface facing toward the upper valve body, and an adjusting nut, which is located below the rotary valve core, is provided in the lower mounting hole. The rotary valve core is moved up and down axially by adjusting the adjusting nut such that an axial clearance between the first stepped surface and the upper valve body is adjusted, so the rotary valve core may flexibly rotate at different temperatures to prevent the multi-way valve from being stuck.

A multi-way valve includes an upper valve body, a lower valve body and a rotary valve core. The upper valve body and the lower valve body are provided respectively with an upper mounting hole and a lower mounting hole. The rotary valve core is provided passing through the upper mounting hole and the lower mounting hole, respectively. The rotary valve core is formed with a first stepped surface facing toward the upper valve body, and an adjusting nut, which is located below the rotary valve core, is provided in the lower mounting hole. The rotary valve core is moved up and down axially by adjusting the adjusting nut such that an axial clearance between the first stepped surface and the upper valve body is adjusted, so the rotary valve core may flexibly rotate at different temperatures to prevent the multi-way valve from being stuck.

A multi-port thermal module which includes a central housing, a plurality of flow cavities integrally formed as part of the central housing, at least one inner housing connected to a first side of the central housing, a first plurality of inner flow channels integrally formed as part of the first inner housing, each of the first plurality of inner flow channels in fluid communication with at least one of the flow cavities, and a first outer housing connected to the first inner housing. A portion of each of a first plurality of flow channels is integrally formed as part of the first inner housing, and another portion of each of the first plurality of flow channels is integrally formed as part of the first outer housing. A rotor located in the central housing is rotated to various orientations to direct fluid between the plurality of flow cavities.