Valve construction

Details Valve construction Valve construction

1995-03-09

1997-01-21

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

29890126, 29890128, 91407, 13762548, 13762569, F16K 1107

Patent

active

055952186

ABSTRACT:
A solid valve spool is split in two, by cutting through its center land diameter. A drill rod spacer is machined to length and inserted between the spool pieces to establish a spool assembly having a precise land width. The spool pieces and spacer are biased together in assembly so as to travel in unison, within a valve bushing, when shifted to control fluid flow, and the precisely-spaced land edges serve to pinch off fluid flow.

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patent: 4254799 (1981-03-01), Blatt
patent: 5261147 (1993-11-01), Wood, III

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