Flow sensing check valve

Details Flow sensing check valve Flow sensing check valve

1980-09-26

1982-08-10

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374925, 137493, F15B 13042

Patent

active

043433286

ABSTRACT:
Disclosed is a flow sensing check valve comprising an outer shell; an inner sleeve mounted in the outer shell and having a first port at one end, a second port at the other end, and a third port axially located intermediate the other two near the first port; a poppet valve urged into valving engagement with the first port, the poppet valve being in sealing engagement with the interior of the inner sleeve between the second and third ports and having a pilot flow control passageway therethrough; and a velocity fuse mounted in the second port. When the velocity fuse senses a pre-selected difference in flow, it causes the poppet valve to seat.

REFERENCES:
patent: 2366596 (1945-01-01), Clifton
patent: 2989072 (1961-06-01), Banker
patent: 3100503 (1963-08-01), Tennis
patent: 3107688 (1963-10-01), Caslow
patent: 3221763 (1965-12-01), Widdowson
patent: 3330298 (1967-07-01), Allen
patent: 4010770 (1977-03-01), Peters

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