Directional control seat valve

Details Directional control seat valve Directional control seat valve

2005-10-19

2009-10-06

Bastianelli, John (Department: 3753)

Valves and valve actuation

Balanced valves

Reciprocating

C251S325000

Reexamination Certificate

active

07597306

ABSTRACT:
A directional control seat valve includes a piston that is biased against a valve seat by means of a spring. The piston is associated with a compensating piston whose end face subjected to the pressure at one of the ports of the directional control valve is arranged before the valve seat when viewed in the closing direction.

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patent: 2005/0098755 (2005-05-01), Kussel
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patent: 91 09 976.5 (1991-11-01), None
patent: 195 09 145 (1996-09-01), None

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