Check valve with damping device

Details Check valve with damping device Check valve with damping device

1978-08-03

1981-02-17

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1506

Patent

active

042509165

ABSTRACT:
A check valve assembly has a damping device for liquid lines and includes a hollow cylindrical chamber, a valve seat, an axially movably supported closure member being movable between an open position of the check valve and a closed position of the check valve in which the closure member lies on the valve seat, a hollow cylindrical guide member having a shell defining an inner space, and a damping piston having two sides and being disposed on the outer periphery of the guide member. The damping piston is firmly connected to the closure member and axially movably guidable in the hollow cylindrical chamber. The shell has throttle openings formed therein at both of the sides of the damping piston for connecting the hollow cylindrical chamber with the inner space. Part of the throttle openings are in communication with the hollow cylindrical chamber in the vicinity of the open and closed positions of the check valve.

REFERENCES:
patent: 1684987 (1928-09-01), Hazard
patent: 1754975 (1930-04-01), Anderson
patent: 2318963 (1943-05-01), Parker
patent: 2583295 (1952-01-01), Greer et al.

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