Check valve

Details Check valve Check valve

1990-02-13

1990-11-20

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

137542, 13754321, F16K 1506

Patent

active

049710931

ABSTRACT:
In a check valve wherein a possible malfunction resides in a thread pipe end being seat too far into the valve housing in a position to make a contact with the movable head or poppet of the valve and thus undesirably close the valve, vanes are provided in certain locations on the head or poppet that will themselves to contact the pipe end under pressure conditions and provide flumes for the fluid to flow through, in spite of the condition stated.

REFERENCES:
patent: 1242706 (1917-10-01), Loetzer
patent: 1976849 (1934-10-01), Hewitt
patent: 2719055 (1955-09-01), Lauck
patent: 2736338 (1956-02-01), Britton
patent: 2960998 (1960-11-01), Sinker et al.
patent: 3145724 (1964-08-01), Pelzer
patent: 4129144 (1978-12-01), Andersoon et al.

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