yes the system must have a pressure relief valve. normally its in the control valve but not always. there are control valves that do not have a relief valve.I am just saying you want to make sure the valve your using has it. I have changed a few valves for guys that built splitters and the cheap valve they used didnt have a relief and one blew the ends out of the cylinder.the other split the pump.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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