Abstract: A cooler bypass valve apparatus installed the apparatus between a heat exchanger and conduits coupled to a device carrying fluid that needs to be cooled. A housing includes an inlet port and first and second outlet ports. At least one thermal actuator and at least one valve are mounted in a fluid flow passageway in the housing and operative in response to the fluid temperature to move the at least one valve between operative positions opening and closing fluid flow from the inlet port through the first and second outlet ports between a heat exchanger bypass loop and a heat exchanger cooling loop. In another aspect, two thermal actuators control a separate valve associated with the first and second outlets between open and closed positions enabling fluid flow from the inlet port exclusively through one of the first and second outlet ports or in a combined partial flow through both of the first and second outlet ports.

Abstract: An expansion valve and an air conditioner for vehicles having the same, the expansion valve comprising a main body having an inflow channel, first and second discharge channels and first and second orifices to expand refrigerant branched from the inflow channel to the first and second discharge channels; first and second valves to control flow rates of refrigerant passing through the first and second orifices by controlling the degree of opening of the first and second orifices respectively; and a shaft slidably mounted inside the main body for varying positions of the first and second valves simultaneously so that the first and second orifices are opened or closed at the same time by the movement of the shaft.

Abstract: A valve assembly for use in aquifer liquid flow control in accordance with one embodiment can be used to deliver liquid to and/or from at least one selected aquifer in a plural aquifer system. In accordance with an embodiment, the valve can be used to route liquid to or from a first aquifer without delivering liquid to or from a second aquifer, or to or from the second aquifer without delivering liquid to or from the first aquifer. As an aspect of an embodiment, the valve assembly can be used to shut off the flow of liquid to both the first and second aquifers.

Abstract: A valve comprising a body and a plug is disclosed. The body has a pair of ports and a tubular structure having a side wall and an open end and defining interiorly a first subchamber communicating with one port. The wall has an opening. The body defines a second subchamber communicating with the other port, extending around the wall and beyond the end to communicate with the end and the opening. The plug has an opening, is mounted to the structure and telescopes between first and second positions. At the second position, the plug is disposed at least partly in the second subchamber and the valve defines, between the ports: a first flow path through the wall opening; and a second flow path through the open end of the structure, via the plug opening. At the first position, the plug and structure restrict flow through the first and second paths.

Abstract: The invention relates to a valve for controlling volumetric flows in a heating and/or cooling system of a motor vehicle, comprising a valve housing (10), from which at least one inlet channel (18) and at least one outlet channel (20, 22) branch, in addition to at least one disc-type valve body (28) for controlling the flow, said body being located in the valve housing so that it can rotate about the axis (31) of a driven shaft (30). According to the invention, the valve body (28) is operatively connected to an electromotive drive (24) by means of a gear system (64). The invention also relates to a heating and/or cooling system (110) of a motor vehicle, comprising a valve (131) of this type.

Abstract: A tube defines a cavity. Normally-open fitting (2) and normally-closed fitting (3) are respectively fitted into the tube to form ports (34),(35) having seats (40),(13). A body secured to fitting (3) defines a chamber (26) to which port (35) leads. Body (4) defines holes (27),(30) leading into chamber (26). A solenoid assembly (6) is slidable within chamber (26), includes a coil, segregates chamber (26) to chambers (7),(29) which communicate respectively with holes (27),(30) and defines a chamber (16), a seat (18), a seal (14) and an orifice (33) leading between seat (18) and seat (13). A rod-piston assembly includes a rod (37) attached to: assembly (6), sealably passing through body (4) into cavity and preventing gas communication between cavity and chamber (7); and a piston with a seal (39). A magnetic rod (15) slides within chamber (16). Spring (17) urges rod (15) towards seat (18) to seal orifice (33). Spring (12) urges assembly (6) towards seat (13) to seal port (35).

Abstract: The three-way valve allows fluid flow to be selectively directed to a run outlet, a bypass outlet or both at the same time. The three-way valve includes a flow diffuser with a primary valve seat positioned opposite a bypass valve seat. Choke points and flow restrictions, strategically positioned in the flow diffuser create a substantially flat velocity profile downstream of the bypass outlet. Larger versions of this three-way valve may be used in Vertical Takeoff and Landing (“VTOL”) aircraft. Other versions may be used in ships and other watercraft.

Abstract: A valve assembly for controlling gas delivery from a higher pressure fluid source to a lower pressure processing tool comprising a valve poppet movingly engageable with a valve seating member and a fluid permeable insert positioned between the valve poppet and the valve seating member that is unexposed to flowing fluid when the valve poppet is in a closed position thereby preventing fluid flow through the valve assembly and provides a diffusional path for transfer of all flowing fluid when the valve poppet is in an open position. The permeable insert can be inserted into the sealable and engageable surface of either the valve seat member or the valve poppet.

Abstract: A four-way switching valve includes a first three-way switching valve having a valve element for connecting a port B to a port A, or to a port D via a sleeve, in a switching manner; a second three-way switching valve having a valve element for connecting a port C to the port A, or to the port D, in a switching manner; and a piston for actuating these three-way switching valves. The three-way valves and piston are coaxially arranged within a hollow cylindrical body. A three-way solenoid valve introduces high pressure into a pressure chamber on the upper side of the piston to actuate the valve elements held on the sleeve downward, while the upward actuation is effected with a driving force produced by reducing the pressure in the pressure chamber and configuring guides to have a larger pressure-receiving area than that of a guide.