Fire resistant valve

Details Fire resistant valve Fire resistant valve

1983-04-18

1985-12-03

Rosenthal, Arnold

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

251214, 251330, F16K 1738, F16K 4114

Patent

active

045560765

ABSTRACT:
A normally non-rising stem valve having a valve stem (30) journaled between bearings (38, 40) is equipped with an energized drive spring (56) for positively engaging backseat seal surfaces (64, 66) upon melting of a fusible ring (52). The spring (56) is compressed axially against the retainer (46) by the cooperative action of the compression nut (58) and the tubular spacer (50), thereby normally avoiding undesirable axial thrust on the bearings (38, 40).

REFERENCES:
patent: 364842 (1887-06-01), Morrin
patent: 663736 (1900-12-01), Delaney
patent: 1183790 (1916-05-01), Allen
patent: 4240455 (1980-12-01), McGee
patent: 4289157 (1981-09-01), McGee

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