Float-controlled valve

Details Float-controlled valve Float-controlled valve

1975-04-28

1977-03-22

Schwadron, Martin P.

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

137428, 137433, 137444, 251 46, F16K 3118

Patent

active

040130916

ABSTRACT:
A control chamber of a float valve is formed in part by a diaphragm which is integral with an elastomeric main valve member that opens and closes the supply port of the float valve. A small tube to supply water to the control chamber is mounted in the main valve member and extends upward through and beyond the supply port. The upper end of the small tube tapers to an inlet opening that is sufficiently restricted to keep large solid particles out of the control chamber. The control chamber has a lower bleeder port which is controlled by a fixed upright pilot valve member on a float. A hood integral with the bottom wall of the control chamber extends downward to form a float chamber enclosing the float, the hood having ample vent ports for siphon prevention. Water is discharged from the bleeder port into an expansile chamber, the outlet of which is sufficiently restricted to cause the expansile chamber to depress the float thereby to increase the volume of water released on each float cycle.

REFERENCES:
patent: 2993676 (1961-07-01), Dahl
patent: 3285261 (1966-11-01), Chancey
patent: 3318565 (1967-05-01), Cutler
patent: 3495617 (1970-02-01), Zifferer
patent: 3893475 (1975-07-01), Hudson

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