Butterfly valve

Details Butterfly valve Butterfly valve

1981-10-06

1983-10-04

Schwadron, Martin P.

Valves and valve actuation

Limit stop

Rotary valve

251306, F16K 5100

Patent

active

044074832

ABSTRACT:
A butterfly valve disk is rotatably mounted within a passageway formed in the valve body and an annular seal fitted in the valve body projects within the passageway. A peripheral annular bearing surface formed on the valve disk is applied against the annular seal in the closed position. The valve disk carries a stop which is brought to bear on an internal surface of the valve in order to prevent rotational displacement of the valve disk beyond its normal position of closure.

REFERENCES:
patent: 3176704 (1965-04-01), De Palma
patent: 3877678 (1975-04-01), Jung

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