Hydraulic dry valve control apparatus

Details Hydraulic dry valve control apparatus Hydraulic dry valve control apparatus

F - Mech Eng,Light,Heat,Weapons

16

K

251/6

F16K 31/02 (2006.01) F16H 39/02 (2006.01) F16H 61/40 (2006.01)

Patent

CA 2028642

Title HYDRAULIC DRY VALVE CONTROL APPARATUS Abstract of the Invention A hydraulic pressure system includes a pump and a dry valve situated in the inlet of the pump, the dry valve being actuated by a pilot valve capable of capturing the pressure differentials between inlet and outlet of the pump for shifting the dry valve between opened and closed positions. In the dry operational mode, the pump inlet operates at a pressure below atmospheric, thus providing a pressure differential substantial enough to move the dry valve to an opened position. In the preferred form, the pilot valve is a solenoid actuated two-position, four-way, spring loaded valve. The dry valve is a gate valve directly coupled to a fluid control motor. 2766APP

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