Viscous damped valve for hydraulic pump

Details Viscous damped valve for hydraulic pump Viscous damped valve for hydraulic pump

F - Mech Eng,Light,Heat,Weapons

04

B

103/139

F04B 17/00 (2006.01)

Patent

CA 1269278

ABSTRACT The hydraulically powered fluid pump has a spool valve which controls the direction of travel of the pump. The spool valve is designed to switch between positions relatively slowly so that in between pump cycles, the ball checks associated with the pump may return under the force of gravity to their seats. This natural gravity return pro- duces greatly decreased noise levels and increased seat life compared with the slamming action present in current pumps. The spool valve is viscous damped and of a closed centered construction to allow the relatively slow switchover to take place.

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