Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1993-12-13
1995-02-28
Rivell, John
Fluid handling
Line condition change responsive valves
Direct response valves
137527, 251334, F16K 1503
Patent
active
053928105
ABSTRACT:
A metal plate 20 for a dual plate wafer check valve.
A central portion 36 of the D shaped plate 20 is reinforced such as by means of a raised area 36 on either or both sides of the plate to resist deformation when subjected to reverse pressure in the valve closed position, while the D shaped edge portion 32 of the plate is made sufficiently flexible to maintain or improve sealing engagement with a valve seat even when the valve seat is distorted by the effect of reverse pressure in the valve closed position.
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Cooper James N.
Harrop Nicholas J.
Goodwin International Limited
Rivell John
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