I have a 3 HP 8 gpm 2 stage pump I am trying to drive a 3 inch cylinder at 2500 psi and a hydraulic motor from same pump with a two spool valve set up for with a motor spool and cylinder spool.
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When I try to operate both the pressure drops to match use of the motor. I need to block the feedback thru motor to maintain pressure on the cylinder.
How can this be done with one pump? What valve do I need?
Thanks for your help.