Device for sensing pressure and governing the operation of safet

Details Device for sensing pressure and governing the operation of safet Device for sensing pressure and governing the operation of safet

1977-04-20

1980-04-29

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

13759618, 1375962, F16K 31122

Patent

active

042001161

ABSTRACT:
A control device for a fluid-operated safety valve of a boiler or the like comprises two chambers, each connected to the vessel to be protected and provided with respective valves. The first chamber is connected also to the cylinder of the safety valve via the first valve so that, when a pressure excess in the vessel develops the first chamber closes the connection between the vessel and the control cylinder while the second chamber vents the control cylinder to the atmosphere.

REFERENCES:
patent: 2619109 (1952-11-01), Garrett
patent: 3664362 (1976-05-01), Weise
patent: 3754566 (1973-08-01), Gemignani
patent: 3977423 (1976-08-01), Clayton

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