Liquid storage tank float valve device

Details Liquid storage tank float valve device Liquid storage tank float valve device

1987-06-16

1988-06-14

Walton, George L.

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

251339, F16K 3118, F16K 3300

Patent

active

047505150

ABSTRACT:
A liquid storage tank having a feed port is provided with a float valve for opening and closing the same. The float valve includes a float member and a rod member having one end connected to the float member. The other end of the rod member is fitted into a valve seat, which is formed on the inner periphery of a feed pipe constituting the feed port, and is provided with a valve plug portion for opening and closing the valve seat. When the level of the liquid in the tank is lowered together with the float member, the rod member is tilted so that the valve plug portion is partially separated from the valve seat to open the feed port. When the float member is in a position at which the float member supports the rod member in a horizontal position, the valve plug portion is seated on the valve seat to close the feed port. The pressure of the supply of liquid acts on the valve plug portion to urge the valve seat portion against the valve seat.

REFERENCES:
patent: 2559046 (1951-07-01), Peters et al.
patent: 3095896 (1963-07-01), Ross
patent: 3342207 (1967-09-01), Ross
patent: 3646955 (1972-03-01), Olde
patent: 3875267 (1975-04-01), Seki et al.
patent: 4254794 (1981-03-01), Smith
patent: 4256136 (1981-03-01), Crawford
patent: 4301829 (1981-11-01), Rowe
patent: 4371000 (1983-02-01), Shinoda et al.
patent: 4402343 (1983-09-01), Thompson et al.
patent: 4403570 (1983-09-01), Freehafer

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