Fluid handling – Systems – Multi-way valve unit
Patent
1995-05-26
1998-02-24
Nguyen, Hoang
Fluid handling
Systems
Multi-way valve unit
239 88, 2395333, E03B 100, F02M 3900
Patent
active
057203180
ABSTRACT:
A valve includes a housing having a high pressure inlet, a low pressure inlet, an outlet and first and second sealing surfaces. A pilot valve is disposed in the housing and includes a valve element movable between first and second positions. A movable spool is also disposed in the housing and includes third and fourth sealing surfaces engagable with the first and second sealing surfaces, respectively, carried by the housing to connect the outlet to the low pressure inlet when the valve element is in the first position and to connect the outlet to the high pressure inlet when the valve element is in the second position.
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Lohmann Craig W.
Miller Charles R.
Nagarajan Raj T.
Caterpillar Inc.
Keen Joseph W.
Nguyen Hoang
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