Low pressure fluid emergency shutdown valve

Details Low pressure fluid emergency shutdown valve Low pressure fluid emergency shutdown valve

1991-10-21

1992-09-15

Nilson, Robert G.

Fluid handling

Destructible or deformable element controlled

137461, F16K 1700

Patent

active

051469421

ABSTRACT:
A low fluid pressure emergency shutdown valve is formed by a valve body having a flow passageway interposed in a gas supply line downstream from a pressure regulator. A diaphragm responsive valve in the valve body is maintained open by a pin interposed between the valve stem and the downstream end portion of the valve body. Upstream fluid pressure, in response to a pressure regulator failing in the open position, above a predetermined limit biases the diaphragm downstream to collapse the pin and move the valve to a flow passageway closed position.

REFERENCES:
patent: 4240458 (1980-12-01), Huff
patent: 4724857 (1988-02-01), Taylor
patent: 4727903 (1988-03-01), Sturgis
patent: 5067511 (1991-11-01), Taylor

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