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Message: <blockquote data-quote="ward" data-source="post: 142030" data-attributes="member: 25583"><p>take off the quick connect for the supplyt line of the grader and add a T between the hose and quick connect and a pressure gauge if you read more then about 200 psi< i would think it would be less, and it is like the relief pressure ie 1500 to 3000 psi then what you could do is add a flow control that lets the system loop back to the tank however when you operate the function it closes to supply flow, what they have is a shuttle valve internally when there if flow the valve shuttles turning off the loop and flow goes to the function valve.</p></blockquote><p></p>