Flap-type pressure relief valve

Details Flap-type pressure relief valve Flap-type pressure relief valve

1995-02-21

1997-02-11

Larson, James

Fluid handling

Line condition change responsive valves

Direct response valves

1375278, 454162, F16K 1514, B60H 126

Patent

active

056011172

ABSTRACT:
A flap-type pressure relief valve includes a frame defining a flow opening therethrough with a flexible flap valve element positioned adjacent the frame to overlie the opening and allow fluid flow in a first direction through the opening while preventing flow in the opposite direction. A retainer assembly for joining a peripheral edge portion of the flap valve element to the frame comprises an elongated retainer bar integrally joined to the frame at one edge and connected to the frame at the other edge along a side of the flow opening in overlying relationship to a peripheral edge of the flap valve element. The retainer bar has a retainer surface spaced from the frame a distance slightly greater than the thickness of the flap valve element. Retainer pins extend from the frame through openings in the flap valve element. The assembly thus supports the flap valve element in a freely floating manner without forming air leakage openings.

REFERENCES:
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patent: 5492505 (1996-02-01), Bell et al.

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