Switching valve

Details Switching valve Switching valve

1988-02-22

1989-06-27

Hepperle, Stephen

Fluid handling

Systems

Multiple inlet with multiple outlet

13762518, 251 85, F16K 11044, F16K 11048

Patent

active

048420166

ABSTRACT:
A two position four-way switching valve has two inputs and two outputs. In one position of the valve, each input is connected to a defined one of the outputs, while in a second position the outputs are reversed. In a specific embodiment, the valve includes an inner cylindrical member enclosed within an outer casing having an opening forming an outlet. The other outlet and the two inlets are formed by tubes that extend inwardly through the casing and communicate with ports in the inner cylindrical member. The ports include first, second and third ports are spaced axially along the cylindrical member. Fluid entering through the inlets is routed to the outlets by plug-type valves including seals carried by an axially movable stem extending through the cylindrical member.

REFERENCES:
patent: 2366127 (1944-12-01), Rappl
patent: 2639884 (1953-05-01), Mitchell
patent: 2737970 (1956-03-01), Hasche et al.
patent: 3078873 (1963-02-01), Stockett
patent: 3203441 (1965-08-01), Kervin
patent: 4644760 (1987-02-01), Aoki et al.

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