Excess flow shutoff valve for hazardous fluids

Details Excess flow shutoff valve for hazardous fluids Excess flow shutoff valve for hazardous fluids

1976-05-03

1979-01-02

Freeh, William L.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

251 45, 251 46, 417 32, F16K 1304, F16K 1740, F04B 4902

Patent

active

041322371

ABSTRACT:
A shutoff valve installed on the discharge side of a pump to automatically shutoff hazardous liquid flow in the event of a rupture on the downstream side of the shutoff valve. The shutoff valve operates in response to a predetermined pressure drop across a valve and may also function to stop the driver of the pump and close the shutoff valve in response to excessive temperature conditions. Various installational arrangements may be provided in order to associate the shutoff valve with the hazardous fluid flow line.

REFERENCES:
patent: 269886 (1883-01-01), Cock
patent: 2859758 (1958-11-01), Jurs
patent: 2933257 (1960-04-01), Clark
patent: 3070109 (1962-12-01), Crandall
patent: 3253615 (1966-05-01), Armstrong
patent: 3379406 (1968-04-01), Greer
patent: 3556464 (1971-01-01), Griswold
patent: 3791619 (1974-02-01), Pett
patent: 3957244 (1976-05-01), Chauvigne

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