Isolating valves

Details Isolating valves Isolating valves

1976-03-11

1978-08-22

Michalsky, Gerald A.

Fluid handling

With leakage or drip collecting

13761411, 251306, F16K 1226, F16K 144, F16K 2402

Patent

active

041081994

ABSTRACT:
A butterfly valve having two interconnected synchronously movable discs spaced apart axially in the direction fluid flow. In order to ensure that fluid is not retained between the discs when the valve is closed there is at least one drainage outlet which communicatingly connects the space between the discs and the valve exterior.

REFERENCES:
patent: 660995 (1900-10-01), Murray
patent: 3026083 (1962-03-01), McLaren et al.
patent: 3306573 (1967-02-01), Trefil
patent: 3346005 (1967-10-01), Hanssen
patent: 3376015 (1968-04-01), Forsman et al.
patent: 3532321 (1970-10-01), Bowman et al.

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