Flapper check valve assembly

Details Flapper check valve assembly Flapper check valve assembly

1984-06-04

1986-01-21

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137854, F16K 1514

Patent

active

045652147

ABSTRACT:
Integrated flapper check valve assembly consisting of cylindrical flapper check valve housing with valve seats and air passage ports, cylindrical flapper check backer with air passage ports, and intermediate flapper check valve with flat multi-leaf design.

REFERENCES:
patent: 724641 (1903-04-01), Wiki
patent: 1634949 (1927-07-01), LeValley
patent: 2609660 (1952-09-01), Tenney
patent: 2725075 (1955-11-01), Irgens
patent: 3037522 (1962-06-01), Millan
patent: 4319452 (1982-03-01), Morita

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