Fire resistant seat for flow control valve

Details Fire resistant seat for flow control valve Fire resistant seat for flow control valve

1981-06-12

1983-02-15

Weakley, Harold W.

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

251306, F16K 1226

Patent

active

043735436

ABSTRACT:
A flow control valve with a valve closure element is provided having at least one annular resilient seat member and an annular flexible metal seat member positioned adjacent to it. The flexible metal seat is held in position by heat resistant gaskets and is biased against the resilient seat member. Upon the failure of the resilient seat to seal because of melting or deterioration caused by exposure to heat, the flexible metal seat member springs into position to provide a fire and heat resistant metal-to-metal seal with the valve closure element.

REFERENCES:
patent: 3967812 (1976-07-01), Newell
patent: 4083529 (1978-04-01), Sauty
patent: 4202365 (1980-05-01), Aoki
patent: 4220172 (1980-09-01), Stager
patent: 4303249 (1981-12-01), Illy
patent: 4341233 (1982-07-01), Broadway

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