The exhaust gas recirculation (EGR) system provided herein utilizes a crossover (X) valve that is selectively activated at the direction of the electronic control module (ECM) to mix the high temperature (HT) and low temperature (LT) circuits of the EGR system under certain predetermined operating conditions. Thus, HT circuit fluid (at engine temperatures) is selectively fed into the LT circuit fluid (at ambient temperatures) to heat certain LT circuit components that are normally cooled by the LT circuit before starting the low pressure (LP) EGR in certain cold cycles. When this heating is finished, the X valve is closed to provide normal HT circuit/LT circuit fluid separation. The X valve can be controlled using a rotational actuator or the like. To avoid exposing the LT circuit to the high revolution-per-minute (RPM) operating conditions of the HT circuit, a HT bypass mechanism is provided.

A diverter valve for conveying material to be conveyed, the diverter valve being cleanable using a method for CIP cleaning, comprises a housing with at least three passage openings to feed or discharge the material to be conveyed, the passage openings defining a conveying plane. The diverter valve further comprises a rotary part having an axis of rotation and an outer contour designed conically in relation to the axis of rotation at least in sections, the rotary part being arrangeable in the housing in a sealed manner, the rotary part being displaceable along the axis of rotation in an axially driven manner and being arranged such as to be drivable for rotation about the axis of rotation, the axis of rotation being oriented perpendicular to the conveying plane, a passage duct arranged in the rotary part, whichdepending on a rotary position of the rotary partconnects in each case two passage openings for conveying material along the passage duct through the diverter valve. The CIP cleaning method of a diverter valve of this type comprises the pulling back and rotating the rotary part into an intermediate position to clean and then dry the diverter valve intensively. A particular feature is the embodiment configured without drainage in the housing of the diverter valve.

A valve is provided. The valve includes a body provided with fluid passages for circulating fluid therein. The body has a body interface with ports connected to the fluid passages. The valve also includes a valve element having a valve element interface facing the body interface. The valve element can move between different positions so as to permit or obstruct communication between the fluid passages. A biasing element biases the valve element interface against the body interface. A load varying mechanism is provided to load the biasing element with different sealing load forces according to the different positions of the valve element. The sealing load force applied on the rotor is thus decreased during rotation, reducing friction between the valve body and the valve element.

According to a preferred embodiment of the present invention there is provided a stopcock including a housing element defining at least first, second and third ports, a handle element which is selectably positionable relative to the housing element, at least one fluid passageway communicating between at least two of the at least first, second and third ports, the at least one fluid passageway being selectably defined by at least one of the housing element and the handle element, the at least one fluid passageway being configured for enabling flushing an internal volume of at least one of the first, second and third ports by a fluid flow which does not flow entirely through the port whose internal volume is being flushed.

A flow control valve includes: a housing forming a number of internal passages and an internal cavity in fluid communication with each of the internal passages; and a flow direction block disposed in the internal cavity. The flow direction block has an outer face encircled by an inner face of the internal cavity. The flow direction block includes two clearances extending through a portion of the flow direction block. Each of the two clearances is able to selectively connect one pair of the internal passages of the housing when the flow direction block is rotated around a rotation axis relative to the housing, thus forming a first flow passage and a second flow passage. The two clearances allow a flow through the first flow passage to be controlled independently of a flow through the second flow passage by way of rotating the flow direction block.

A low torque rotary valve for a vehicle cooling system is provided. The rotary valve includes a tapered valve body that can be lifted during rotation and thereafter seated after being rotated the desired amount. An axial surface of the tapered valve body is in sliding contact with an axial surface of a valve housing or a rotatable disk. As the tapered valve body rotates, one or more ramped projections cause the tapered valve body to displace axially within the valve housing. The sealing members are uncompressed during rotation of the tapered valve body, and a lower torque demand is required, thereby allowing for a smaller and less costly motor actuator.

According to a preferred embodiment of the present invention there is provided a stopcock including a housing element defining at least first, second and third ports, a handle element which is selectably positionable relative to the housing element, at least one fluid passageway communicating between at least two of the at least first, second and third ports, the at least one fluid passageway being selectably defined by at least one of the housing element and the handle element, the at least one fluid passageway being configured for enabling flushing an internal volume of at least one of the first, second and third ports by a fluid flow which does not flow entirely through the port whose internal volume is being flushed.

A diverter valve for conveying a material has a housing with at least three passage openings for feeding or discharging material. The passage openings define a conveying plane. The diverter valve includes a rotary part with an outer contour that is conical, at least in sections, with respect to its axis of rotation. The rotary part is arranged in a sealed manner in the housing. The rotary part can be axially displaced and rotated within the housing. The axis of rotation is perpendicular to the conveying plane. A passage conduit is arranged in the rotary part, which, depending on the rotational position of the rotary part, connects to each other two passage openings for conveying material along the passage conduit through the diverter valve. A drain opening is provided in the housing for the automatic drainage of a liquid from the housing.

A stopcock and sampling port device. The stopcock and sampling port device configured to reduce the occurrence of stagnation fluid flowing therethrough, the stopcock and sampling port device including a housing, an elastomeric element, a cap, a handle, and a divided septum, the housing defining an internal fluid passageway having a first port, a second port, and a third port, the divided septum operably coupled to the housing within the third port and configured to encourage turbulence of fluid passing through the third port, thereby reducing the occurrence of stagnation of fluid flowing therethrough.

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.