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Message: <blockquote data-quote="ward" data-source="post: 142002" data-attributes="member: 25583"><p>the grader has an open center valve body, when you activate the function it diverts the flow to the function, if it did not do that the system would create a lot of extra heat going over relief, of which it will eventually damage the relief valve and it no longer reaching the desired pressure for the functions of before it goes over relief.</p></blockquote><p></p>