Four-way poppet valve assembly

Details Four-way poppet valve assembly Four-way poppet valve assembly

1982-09-30

1985-01-22

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

1376255, 137870, 91466, F15B 1302

Patent

active

044945728

ABSTRACT:
A four-way poppet valve having a housing provided with a pair of parallel bores, and a pair of valve stems slidably supported within the bores, each valve stem having one or more elastomeric poppets thereon for controlling fluid flow. A supply port communicates with one of the bores, whereby flow therethrough is controlled by the respective shiftable valve stem through intermediate passages to the second bore, which second bore communicates with both the exhaust port and a pair of load ports. The shiftable valve stem in the second bore respectively controls flow between the ports which communicate therewith. The bores, and the valve stems associated therewith, define various chambers which cooperate with the poppets on the respective valve stems for confining therein fluid pressure so that the valve poppets, when in a closed or seated condition, are always urged in the seated direction by the fluid pressure.

REFERENCES:
patent: 614798 (1898-11-01), Dodge
patent: 2658523 (1953-11-01), Johnson
patent: 3480041 (1969-11-01), Whitlock
patent: 4074700 (1978-02-01), Engle

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