Hydraulic check valve

Details Hydraulic check valve Hydraulic check valve

1985-05-16

1986-04-08

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375145, F16K 1502

Patent

active

045805954

ABSTRACT:
A novel and improved hydraulic check valve assembly comprised of an arrangement of coaxially interfitted, generally cylindrical elements that are clamped between a pair of coaxial end flanges and wherein valve opening and closing occurs by movement of independently movable and coaxially interfitted inlet and outlet seat members in response to the impetus of fluid flow encountered in the valve, the movement of at least one of the inlet and outlet seat members being cushioned by in a hydraulic fluid cushion to dissipate impact forces and consequent valve wear associated with sudden flow direction reversals.

REFERENCES:
patent: 2927604 (1960-03-01), Johnson
patent: 3044487 (1962-07-01), Dotter

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