Cylinder actuated descale valve

Details Cylinder actuated descale valve Cylinder actuated descale valve

1997-02-26

1998-06-23

Fox, John

Fluid handling

Systems

Multi-way valve unit

251282, F16K 152

Patent

active

057691231

ABSTRACT:
A valve to control fluid of high volume and pressure comprising a continuously balanced hollow plunger disposed within an annularly enlarged chamber that controls fluid flow by moving radial slots and ports in its peripheral wall back and forth across seals, the plunger being continuously balanced in any position by a double-rodded piston assembly comprising a piston, a ported operator rod and actuator rod, and a balance chamber within a sealed piston cylinder tube that allows the line media to flow through, out of, and around the plunger, through the operator rod and through and out of the actuator rod and into the balance chamber creating a complete continuous balancing effect on the plunger in any position, and operator means are only required to overcome seal friction and path resistance to move the plunger to selected position.

REFERENCES:
patent: 2981287 (1961-04-01), Caslow
patent: 3086553 (1963-04-01), Levine
patent: 3964516 (1976-06-01), Purton et al.
patent: 4167262 (1979-09-01), Lemmon
patent: 4374582 (1983-02-01), Heyneman
patent: 4809746 (1989-03-01), Wolfges
patent: 4852364 (1989-08-01), Seener, et al.
patent: 4921209 (1990-05-01), Moineau
patent: 5069246 (1991-12-01), Boovens
patent: 5074519 (1991-12-01), Pettus
patent: 5248123 (1993-09-01), Richeson et al.
patent: 5439030 (1995-08-01), Pallaruelo
patent: 5503365 (1996-04-01), Backe

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