Float valve assembly

Details Float valve assembly Float valve assembly

1985-11-18

1987-08-18

Nilson, Robert G.

Fluid handling

With casing, support, protector or static constructional...

Jacketed

13751629, 1375195, F16K 1504

Patent

active

046870199

ABSTRACT:
A float valve assembly comprises a valve body defining an internal chamber having upper and lower openings and a vertically movable ball or poppet in the chamber for moving upwardly to close the upper opening to prevent upward flow of fluid and for moving downwardly away from the upper opening to permit downward flow of fluid. A resilient, deformable seal positioned adjacent the upper opening has three separate seal elements to provide primary, secondary and tertiary sealing phases. The interior of the valve chamber is lined with a continuous liner to minimize abrasion of the valve. The liner and the resilient seal are formed simultaneously as a single unit by in-situ molding and curing of a thermosetting elastomer material.

REFERENCES:
patent: 3134572 (1964-05-01), Glasgow
patent: 3498315 (1970-03-01), Graves
patent: 3534767 (1970-10-01), Swinney
patent: 3771556 (1973-11-01), Gifford
patent: 4224961 (1980-09-01), Schnabel

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