Non-return valve

Details Non-return valve Non-return valve

1978-08-30

1980-11-04

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1502

Patent

active

042313953

ABSTRACT:
A non-return valve which upon reversal of the flow direction is rapidly closed without impingement of the valve member on the seat with a bang comprises a stationary valve guide bush wherein the valve member is adapted for axial displacement and whereby between the valve guide bush and the valve member there is provided a slotted space such that the closing movement of the valve member is damped just before it impinges on the seat.

REFERENCES:
patent: 816216 (1906-03-01), Cash
patent: 1322938 (1919-11-01), Parker
patent: 1466171 (1923-08-01), Jacobsen
patent: 1710214 (1929-04-01), Hassold
patent: 2602631 (1952-07-01), Eickmeyer
patent: 2917077 (1959-12-01), Ziege
patent: 3141471 (1964-07-01), Williamson

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