Check valve with spring loaded clapper assembly

Details Check valve with spring loaded clapper assembly Check valve with spring loaded clapper assembly

1991-01-04

1992-09-15

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

251337, F16K 1503

Patent

active

051469499

ABSTRACT:
A check valve assembly adapted for use in a fire protection system includes a housing defining an inlet, an outlet, a seat and a chamber. A clapper or valve element is mounted within the chamber for movement towards and away from the seat. A parallelogram linkage supports the clapper. A pair of draw bars extend diagonally between opposed links. Each draw bar defines a stop. A coil spring encircles the draw bars and engages the stops. Expansion of the coil spring forces the draw bars apart and resiliently biases the clapper or valve element against the valve seat.

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