Corrosion resistant enameled valve

Details Corrosion resistant enameled valve Corrosion resistant enameled valve

1990-04-03

1991-07-23

Fox, John C.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

137375, 251144, F16K 132

Patent

active

050334956

ABSTRACT:
A fire and corrosion resistant enameled exteriorly sealing valve which may be mounted to a nozzle of a reaction vessel, comprising: a valve housing (1) having a valve opening therein, said housing being both internally enameled and enameled at said opening; a valve shaft (3) comprising a valve head (4) proximate one end thereof, said shaft and valve head being enameled on its outer surface; said valve head having a ground seat surface (4a) for mating with a housing seat surface (2a) at said opening provided at an extension (2, 21) of the valve housing (1); a stuffing box for the valve shaft (3), containing a packing (6, 7) out of material resistant to high temperatures; a spring package (17) engaging the valve shaft (3) and biasing the valve head (4) in a closed position, and by which a sufficiently high sealing force is provided between the two ground seat surfaces (2a, 4a) to maintain a seal in the presence of a fire; and said valve further comprising an actuation device (16) for opening and closing the valve.

REFERENCES:
patent: 2454160 (1948-11-01), Greene
patent: 2469109 (1949-05-01), Goecke
patent: 3065949 (1962-11-01), De Frees
patent: 4557286 (1985-12-01), Nagano
Bhasin, Vinod, "How Safe are Fire-Safe Valves", Reprinted from Chemical Processing, Feb. 1990.

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