Pilot actuated valve

Details Pilot actuated valve Pilot actuated valve

1976-10-12

1979-09-11

Cline, William R.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 63, 251282, 251325, 251364, 277188A, 1374875, F16K 31122

Patent

active

041672623

ABSTRACT:
A valve of simplified construction, adapted to control fluid of high volume and pressure. The valve plunger is a hollow metal tube, that controls fluid flow by moving radial slots in its peripheral wall back and forth across a seal. The plunger is moved by an air or hydraulic cylinder which is connected to the plunger by a plate ring. The plate ring has a series of holes therethrough that allow the line media to flow through, out of and around the plunger to create a balancing effect and thus decrease opposition to movement of the plunger, which opposition may be caused by forces created by the line media. The improved valve utilizes double-acting seals to isolate a down stream port, and to seal off the increase in pressure downstream when the valve is closed.

REFERENCES:
patent: 1977565 (1934-10-01), Yarnall
patent: 2619120 (1952-11-01), Page et al.
patent: 2841429 (1958-07-01), McCuistion
patent: 2996074 (1961-08-01), Page et al.
patent: 3088759 (1963-05-01), Corsette
patent: 3095176 (1963-06-01), Hunt
patent: 3518032 (1970-06-01), DeGroff et al.
patent: 3590848 (1971-07-01), Svensson
patent: 4040636 (1977-08-01), Albertson et al.

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