Fluid handling – Systems – Supply and exhaust
Patent
1982-02-24
1984-06-12
Michalsky, Gerald A.
Fluid handling
Systems
Supply and exhaust
13759616, 13762564, 13762569, 137884, F15B 13043
Patent
active
044535651
ABSTRACT:
A four-way valve including a valve base, a valve body mounted on a base and a valve cover mounted on the top of the valve body. The valve can be used as a stacking valve. A pressure regulating valve may be selectively mounted on the top of the valve cover and each of the exhaust passageways in the valve may be selectively provided with a flow control valve. The inlet air passages in the valve body are constructed and arranged to convey the inlet air under pressure up around the main valve spool bore and up to the pressure regulating valve, and then down to the main valve spool bore with secondary regulated air pressure. The exhaust air passages are arranged in the valve body so that the flow control valves are in a position where the exhaust air is flowing downwardly through the valve body. The valve includes pilot air passages which may be provided selectively with either external pilot air or internal pilot air.
REFERENCES:
patent: 3385166 (1968-05-01), Kroffke
patent: 3513876 (1970-05-01), Tarbox
patent: 3643683 (1972-02-01), Semon
patent: 3976279 (1976-08-01), Walker
patent: 4267862 (1981-05-01), Neff et al.
Mac Valves Inc.
Mentag Robert G.
Michalsky Gerald A.
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