Low pressure high temperature safety valve

Details Low pressure high temperature safety valve Low pressure high temperature safety valve

1985-03-25

1986-06-17

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137534, F16K 1712

Patent

active

045950334

ABSTRACT:
A safety valve for relief of overpressure from a relatively low pressure high temperature fluid system with which the valve is intended to be operative. System pressure is communicated via a body inlet leading to the underside of a displaceable closure disc that cooperates with an annular seat for opening and closing the valve to fluid flow. A predetermined loading force is applied against the topside of the disc urging it toward closed position in opposition to fluid pressure thereat. To minimize or eliminate adverse temperature effects on the disc loading force at the set point operation of the valve, the closure force imposed against the disc is divided between a coaxially supported mass of predetermined weight and a compressed coil spring operative in series relation therewith.

REFERENCES:
patent: 129991 (1872-07-01), Smart
patent: 267796 (1892-11-01), McKee
patent: 777632 (1904-12-01), Henry
patent: 1268597 (1918-06-01), Montreuil
patent: 1631263 (1927-06-01), Greenhouse
patent: 1743350 (1930-01-01), Hopkins
patent: 2628632 (1953-02-01), Dayton

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