Switching valve

Details Switching valve Switching valve

F - Mech Eng,Light,Heat,Weapons

15

B

137/90, 137/98

F15B 13/00 (2006.01) F15B 13/043 (2006.01) F16K 25/00 (2006.01)

Patent

CA 1099189

SWITCHING VALVE Abstract of the Disclosure A pilot operated switching valve includes a sliding spool that is actuated by pilot pressure to control fluid through the valve to a prime mover. The ends of the spool are exposed to pilot pressure that moves the spool within the valve housing to control fluid flow through passages to and from the spool. The passages are sealed by the spool at selected positions to minimize internal leakage and also to allow the valve to hydraulically lock the prime mover. The switching valve also includes a manual switch that is in fluid communication with a source of pressurized fluid. The manual switch may be manually actuated to direct pilot fluid to one of the two ends of the sliding spool thereby manually actuating the valve.

294053

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