Non-return valve

Details Non-return valve Non-return valve

1990-10-12

1992-01-14

Nilson, Robert G.

Fluid handling

Processes

Cleaning, repairing, or assembling

137220, 137328, 13754315, 137584, F16K 1506

Patent

active

050801228

ABSTRACT:
A valve body having an opening closed by a cover through which may be mounted or demounted a non-return obturator which is mobile along an upstream-downstream axis, the obturator being installed by first securing a first member to the valve body and then securing the obturator and its spring and then securing a second member.

REFERENCES:
patent: 620676 (1899-03-01), Sanderson
patent: 862714 (1907-08-01), Constantinov
patent: 1003819 (1911-09-01), Staples
patent: 1470018 (1923-10-01), Love
patent: 1861420 (1932-05-01), Mahan
patent: 2761463 (1956-09-01), Wagner
patent: 2844164 (1958-07-01), Robbins
patent: 3460805 (1969-08-01), Kudlaty
patent: 4893654 (1990-01-01), Feuz

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