Check valve for heat pump systems

Details Check valve for heat pump systems Check valve for heat pump systems

1977-04-28

1978-07-18

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

13753319, F16K 1504

Patent

active

041009355

ABSTRACT:
An improvement in ball-type check valves of the type used in heat pump systems. The valve is designed so that the pressure differential across the ball is significantly higher than in prior art devices. This assures that the ball is held away from the seat in the full flow mode, even when the valve is installed in a vertical position.

REFERENCES:
patent: 3260279 (1966-07-01), Liebman
patent: 3323560 (1967-06-01), Ehlers

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