Valve assembly

Details Valve assembly Valve assembly

2006-07-25

2006-07-25

Look, Edward K. (Department: 3751)

Fluid handling

Systems

Multi-way valve unit

C060S470000

Reexamination Certificate

active

07080663

ABSTRACT:
A valve assembly for load pressure-independent control of consumers is disclosed, which includes a main valve having a directional element and a metering throttle part. The valve assembly includes a shut-off valve for leakage-free shutting off of a work line leading to the consumer. This shut-off valve is designed with a pilot valve whereby a pressure chamber of the shut-off valve acting in the closing direction may be relieved towards a tank or a low-pressure source. The pilot valve is, in accordance with the invention, controlled open by a main slide of the main valve.

REFERENCES:
patent: 4359931 (1982-11-01), Palmersheim et al.
patent: 5613519 (1997-03-01), Ishizaki
patent: 6256986 (2001-07-01), Langen et al.
patent: 6581639 (2003-06-01), Fiala et al.
patent: 196 46 447 (1998-05-01), None
patent: 198 31 595 (2000-01-01), None
patent: 199 09 714 (2000-09-01), None
patent: 100 33 757 (2002-01-01), None
patent: 100 47 632 (2002-04-01), None
patent: WO 95/32364 (1995-11-01), None

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