Valve

Details Valve Valve

1976-09-21

1977-12-20

Cohan, Alan

Fluid handling

Convertible

Unit orientable in a single location between plural positions

137271, 137596, 13762527, F16K 1104

Patent

active

040635686

ABSTRACT:
Installed co-axially in the valve body, along its axis, are two identical sockets with central holes in their bottoms, the holes forming seats closed by closing elements. The sockets are provided with annular seals which divide the valve body into three chambers, viz., an inlet chamber which receives the fluid under pressure, an outlet chamber communicating with the output element and a return chamber for draining the fluid from the output element back into the system. The sockets can be installed with their bottoms directed either towards each other to form a "normally-open" valve or away from each other to form a "normally-closed" valve. The closing elements are accommodated in cages and operated by a drive such as an electromagnetic drive. The critical limits of valve operation are set by springs.

REFERENCES:
patent: 2404514 (1946-07-01), McClure
patent: 3009481 (1961-11-01), Randol
patent: 3123091 (1964-03-01), Elsey
patent: 3196896 (1965-07-01), Leulenegger
patent: 3366424 (1968-01-01), Edwards
patent: 3454045 (1969-07-01), Kaemmer
patent: 3878859 (1975-04-01), Grop et al.

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