Yes, both valves are open center on gear pumps.

Posted by AmeriKen on September 09, 2006 at 06:14:38 from (70.217.180.159):

In Reply to: Advise Please: Using non-power beyond hyd valves. posted by AmeriKen on September 08, 2006 at 19:00:59:

Yes, both sets of valves are from a gear pump system that required open center spools to allow hydraulic flow when not in use.

Yes, each has an internal relief valve to the single return line.

Yes, without power beyond, I cannot use both the loader and backhoe at the same time.

So can I plumb these two sets in series and have a workable system without splitting hoses or exploding the pump?

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