Emergency shutoff valve and regulator assembly

Details Emergency shutoff valve and regulator assembly Emergency shutoff valve and regulator assembly

1992-05-26

1993-05-11

Nilson, Robert G.

Fluid handling

Destructible or deformable element controlled

137461, 137613, F16K 1700

Patent

active

052092534

ABSTRACT:
A low gas pressure emergency shutdown valve forms part of a valve body having a flow passageway interposed in a gas supply line and forming a gas pressure regulator having a diaphragm/spring responsive poppet valve and a companion diaphragm responsive shutoff valve in the upstream end portion of the valve body maintained open by a pin bearing against the shutoff valve stem. Downstream fluid pressure, in response to a predetermined pressure limit in a flow control chamber, biases the diaphragm in a pin collapsing direction and moves the shutoff valve to a flow passageway closed position.

REFERENCES:
patent: 3542052 (1970-11-01), Irwin
patent: 5067511 (1991-11-01), Taylor
patent: 5146942 (1992-09-01), Taylor

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