Safety connection connecting a vessel containing a gas under pre

Details Safety connection connecting a vessel containing a gas under pre Safety connection connecting a vessel containing a gas under pre

1983-07-20

1985-05-28

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

137495, F16K 3112

Patent

active

045194165

ABSTRACT:
A safety connection located between a vessel containing a gas under pressure and a gas discharge system comprises a pilot controlled valve which is provided with a separate control system for opening the valve, the valve having a ball-and-socket system between the actuating rod and the valve-closing flap which it carries, so that the valve can also function as a sluice so as to avoid the need to provide a second pipe connected to the vessel and provided with a sluice as is conventional.
The actuating rod of the valve carries a piston, one face of which is normally subject to the pressure of fluid in the vessel via the pilot valve but is connected to a vent as soon as an overpressure occurs, to open the valve. The other face of the piston is normally connected to a vent but is subject to the pressure of a fluid from an independent source of control fluid when the separate control system is operated to open the valve.

REFERENCES:
patent: 3227171 (1966-01-01), Woefel
patent: 3253611 (1966-05-01), Cummins
patent: 3754566 (1973-08-01), Gemigniani
patent: 4016901 (1977-04-01), Kenny
patent: 4200116 (1980-04-01), Gemignani
patent: 4235416 (1980-11-01), La Coste
patent: 4291721 (1981-09-01), Gemignani

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