How open center hydraulic system works

yes, the dump valves are powered all the time in ground control. That is correct. What you need to do is figure out where you are losing pressure between the pump and the valve bank. It looks like there is a dump valve and a pressure regulator in line to each section - both of which have a return line to the tank. Blocking off these return lines will raise your pressure if either of the valves are returning oil to th

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