Momentum balance metering spool

Details Momentum balance metering spool Momentum balance metering spool

F - Mech Eng,Light,Heat,Weapons

16

K

137/88

F16K 3/00 (2006.01) F16K 11/07 (2006.01) F16K 39/04 (2006.01)

Patent

CA 1129307

ABSTRACT OF THE DISCLOSURE This invention is a specific method for shaping the shank of a hydraulic control valve spool to alter the momentum exchange Prom high pressure fluid flowing across the spool 90 as to balance the various dynamic forces acting on the spool. The shank is shaped to turn the high velocity stream away from the spool at a lesser angle than the entry angle of the stream while utilizing conventional square-edge lands.

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