Flush valve

Details Flush valve Flush valve

1991-06-25

1993-10-12

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

137597, 137874, 251297, F16K 11074

Patent

active

052516709

ABSTRACT:
Flush valves for alternately supplying freshwater or seawater coolant to marine engines. Such valves, used in combination with a marine engine cooling system, facilitate flushing of contaminants. In one embodiment, the valve includes a first portion having inlet conduits, a second portion having outlet conduits, and means for rotatably securing the first and second portions together with minimal gap therebetween. Inlet and outlet portions are alternately positioned in a first, single fluid flow relationship (seawater supply) wherein only a first fluid is directed through outlet conduits, or in a second, multiple fluid flow relationship (flushing operation) wherein both a first and a second fluid are sent to outlet conduits. Also, sealing means is provided between the first and second portions to prevent liquid from escaping through the gap therebetween. In another embodiment, the inlet and outlet portions are stationary and a coupling means situated between the portions is alternately positioned to switch the fluid flow relationship. In yet another embodiment, the coupling means is alternately positioned in a first, dual fluid flow relationship, or in a second dual fluid flow relationship wherein the fluid delivered to the outlet conduits is reversed. The valves may also be useful in industrial applications.

REFERENCES:
patent: 1968391 (1934-07-01), Hamilton
patent: 3283498 (1966-11-01), Connell
patent: 3550612 (1970-12-01), Maxon
patent: 3874317 (1975-04-01), Hikita
patent: 4133284 (1979-01-01), Holcroft
patent: 4457727 (1984-07-01), Flaig
patent: 4533331 (1985-08-01), Bland
patent: 4619618 (1986-10-01), Patti

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