Pilot-operated valve with integral filter

Fluid handling – With means for separating solid material from the fluid – Hollow strainer – fluid inlet and outlet perpendicular to...

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Details

1376256, 13762568, 210131, F16K 31122, B01D 2710

Patent

active

046102701

ABSTRACT:
A pilot-operated, directional flow control valve includes a movable spool member axially slidable between two positions within a cylindrical bore provided by a multi-ported valve body. An integral portion of the valve body serves as a housing for an inverted, cup-shaped filter element having its lip portion spring-biased downwardly against an annular seating surface. The filter element housing portion of the valve body provides a horizontally extending blind bore functioning as a supply fluid inlet port to the valve. The blind bore inlet communicates with an inlet to the interior of the filter element, the filter element extending perpendicularly upwardly from a point spaced from the terminal end of the blind bore inlet. The orientation of the horizontally extending blind bore inlet relative to the vertically extending filter inlet provides a mechanical filtering action to trap heavy dirt particles at the end of the blind bore before they can enter into the filter element and prematurely clog it.

REFERENCES:
patent: 2287344 (1942-06-01), Easton et al.
patent: 2302116 (1942-11-01), Gill
patent: 2577639 (1951-12-01), Traver
patent: 3215163 (1965-11-01), Henderson
patent: 3473663 (1969-10-01), Winslow
patent: 3757951 (1973-09-01), Redenbarger et al.
patent: 3893473 (1975-07-01), Breece
patent: 3906994 (1975-09-01), Schon
patent: 3955760 (1976-05-01), Ridenour et al.
patent: 4459208 (1984-07-01), Lemon

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