Plastic float valve

Details Plastic float valve Plastic float valve

1996-12-19

1999-01-12

Walton, George L.

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

137444, 137446, F16K 3126

Patent

active

058574832

ABSTRACT:
A plastic float valve wherein the piston is provided with a number of thin ridges as bearing surfaces which contact the valve bore, an annular cup seal to seal the valve bore and a tip washer having a truncated cone portion and mounted onto a tapered post on the piston, where the piston seals an inlet orifice by pressing the tip washer against an annular rim which is surrounded by a recessed channel.

REFERENCES:
patent: 164539 (1875-06-01), Fuller
patent: 178656 (1876-06-01), Meyer
patent: 1266637 (1918-05-01), Snyder
patent: 1302538 (1919-05-01), Gulick
patent: 1612857 (1927-01-01), Donnelly
patent: 1678769 (1928-07-01), Delany
patent: 1826322 (1931-10-01), Mueller
patent: 2164927 (1939-07-01), Kohler
patent: 2214863 (1940-09-01), Schultheiss
patent: 2520573 (1950-08-01), Smith et al.
patent: 2595937 (1952-05-01), Graham
patent: 2715415 (1955-08-01), Tucker
patent: 2730121 (1956-01-01), Hansen
patent: 2730122 (1956-01-01), Svirsky
patent: 4762142 (1988-08-01), Tams

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