thats a flow controller, (controls motor speed) you need something like this Surplus Center - 1 SPOOL 20 GPM PRINCE RD-2575-M4-EDA1 MOTOR VALVE
you have an inlet port (from pump) then your work ports (connects to motor) and a return port, id stay away from a suction filter, if its clogged or doesnt flow enough it will cause the pump to cavitate (starve the pump of oil) ruining the pump...
Thank you guys. I think I will go this route and keep the filter on the return side. Hopefully I can find a local vendor so I don't have to wait for shipping.