Four-way reversing valve with differential area operator

Details Four-way reversing valve with differential area operator Four-way reversing valve with differential area operator

1976-07-09

1979-08-21

Wayner, William E.

Fluid handling

Systems

Multi-way valve unit

13762543, 251 31, F16K 31363

Patent

active

RE0300764

ABSTRACT:
The four-way reversing valve is utilized in refrigerating systems for heat pump applications to interchange the heating and cooling effects of the evaporator and condenser. The three-way pilot valve controls application of high or low system pressure to the end of the chamber adjacent the large piston. The different areas of the two pistons result in movement of the slide valve to the left (both modifications) when high pressure is applied and to the right when low pressure is applied.

REFERENCES:
patent: 2916051 (1959-12-01), Taylor
patent: 2920653 (1960-01-01), Wolff
patent: 3448959 (1969-06-01), McHale et al.

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