Directional change-over valve

Details Directional change-over valve Directional change-over valve

1977-01-10

1979-09-11

Cohen, Irwin C.

Fluid handling

Convertible

Units interchangeable between alternate locations

91526, 91531, 91532, 137269, 137596, F15B 1308, F16K 1110

Patent

active

041671970

ABSTRACT:
A directional change-over valve which has a valve body having connecting surfaces at both sides thereof, a spool slidably inserted into the valve body, a check valve replaceable depending upon utilities thereof, wherein the valve body has a plurality of valve chambers, the central valve chamber is communicated with the hole for mounting the check valve for removably mounting the check valve, passages are provided opening at the connecting surfaces of the valve body in the respective valve chambers, another passages are provided for connecting the interior of the check valve to the both side valve chambers to form parallel, tandem and series circuits. Thus, this invention simplifies the structure and circuits to provide a compact directional change-over valve device as a whole.

REFERENCES:
patent: 2456651 (1948-12-01), Schmiel
patent: 2873762 (1959-02-01), Tennis
patent: 2922432 (1960-01-01), Huntington et al.
patent: 3134402 (1964-05-01), Tennis
patent: 3216443 (1965-11-01), Schmiel
patent: 3267966 (1966-08-01), Williams
patent: 3635244 (1972-01-01), Lamborghini

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