Valve stem packing assembly with temperature responsive seal

Details Valve stem packing assembly with temperature responsive seal Valve stem packing assembly with temperature responsive seal

1976-12-17

1978-04-04

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

251214, 277 26, F16K 4100

Patent

active

040821056

ABSTRACT:
There is disclosed a valve having means for providing a secondary stem seal in the event the primary packing for the stem is destroyed by heat.

REFERENCES:
patent: 2647721 (1953-08-01), Volpin
patent: 3177887 (1965-04-01), Priese
patent: 3606348 (1971-09-01), Taylor
patent: 3630483 (1971-12-01), Canalizo
patent: 3990465 (1976-11-01), Allen

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