Pressure control valve

Details Pressure control valve Pressure control valve

1996-01-31

1998-07-07

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

1371151, 137315, 1375395, F16K 1504

Patent

active

057753601

ABSTRACT:
The invention provides a pressure control valve which can be made of aluminum as much as possible and has a comparatively light weight and wherein a seat member made of steel can be force fitted into a spool of aluminum at a room temperature. The pressure control valve includes a relief valve in a spool which is formed from aluminum. A sleeve made of steel is force fitted at a room temperature into a portion of an inner face of the spool in which a seat is inserted. The end portion of the spool in which the seat is inserted is bent by caulking to prevent coming off of the seat.

REFERENCES:
patent: 3426785 (1969-02-01), Brady et al.
patent: 3854557 (1974-12-01), Wilcox
patent: 4446886 (1984-05-01), Taylor et al.
patent: 5170626 (1992-12-01), Ohtaki et al.
patent: 5333454 (1994-08-01), Nikaido

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