Compact swing check valve

Details Compact swing check valve Compact swing check valve

1992-06-02

1993-01-26

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375278, F16K 1503

Patent

active

051815354

ABSTRACT:
A swing check valve including a body, a seat ring, a cage ring and a retainer ring. The cage ring supports a disc and the seat ring has a seating portion facing downstream to mate with the disc. The body has an upstream end, a downstream end and a bore interconnecting the upstream and downstream ends. The bore includes an annular shoulder facing downstream toward an annular groove formed in the bore to receive the retainer ring. An annular shoulder on the seat ring mates with the annular shoulder of the bore and the retainer ring engages the cage ring to position the seat ring and cage ring in a medial portion of the bore.

REFERENCES:
patent: 3933173 (1976-01-01), Kajita
patent: 4201241 (1980-05-01), Schertler
patent: 4230150 (1980-10-01), Scaramucci
patent: 4257444 (1981-03-01), Ogle
patent: 4284097 (1981-08-01), Becker

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