Multiway valve

Details Multiway valve Multiway valve

1993-08-03

1995-01-31

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

123198DB, 1376255, F16K 1104

Patent

active

053851706

ABSTRACT:
A multiway valve, in particular a 4/2-way valve, has a housing provided with an axial hole having a plurality of steps to form four seat elements located one behind the other. The housing includes two end chambers and at least two intermediate spaces between these end chambers, with one of the valve connections opening into each. A spool-type drive pin carrying at least two closing elements is located in the axial hole. The drive pin is guided so as to seal at its one end and is radially supported in the axial hole by radial protrusions at its other end. This drive pin has a longitudinal passage which is connected to the first chamber via radial holes at its one end and to the second chamber via its opening provided on the related end of the drive pin at its other end. The closing elements are partially elastically flexible and interact with the seat elements. The closing elements are configured as sleeve-shaped or annular and each has two opposed sealing surfaces which can be laid on one or other seat element of the associated seat element pair depending on the valve position.

REFERENCES:
patent: 3202182 (1965-08-01), Haviland
patent: 3602246 (1971-08-01), Hettinger et al.
patent: 4971115 (1990-11-01), Tinholt
patent: 5062446 (1991-11-01), Anderson
patent: 5109886 (1992-05-01), Takata et al.
patent: 5152265 (1992-10-01), Hummel et al.

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