Multiple position valve

Details Multiple position valve Multiple position valve

1978-01-31

1980-02-12

Cline, William R.

Fluid handling

Systems

Multi-way valve unit

13762511, 92 53, F16K 1106, F16K 4500

Patent

active

041878833

ABSTRACT:
A multiple position valve which has a set of nesting actuating pistons whose strokes are limited to properly position the valve. The varying pilot pressure applied to the nested pistons is opposed at the opposite end of the valve by a fixed supply pressure exerted on a single piston. Pilot pressure as it is increased moves the nested piston until each one reaches the end of its stroke so that a predetermined pilot pressure will move the nested pistons to a certain seating of selected pistons and thereby position the valve at its desired position.

REFERENCES:
patent: 3417670 (1968-12-01), Madland
patent: 3530893 (1970-09-01), Masuda
patent: 3683966 (1972-08-01), Payne
patent: 3917220 (1975-11-01), Gilmore
patent: 3934423 (1976-01-01), Haller
patent: 3952763 (1976-04-01), Baugh

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