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Hello folks,I ran across two different Dirty Hands hydraulic wood splitter control valves on a surplus site. One is open center, one is closed center. It surprised me to see a closed center valve used on a wood splitter. I would have thought that open center would be preferred to limit heat buildup at the pump when the cylinder is not moving, and I thought/assumed that most two stage wood splitter pumps were positive displacement gear driven pumps.Why would a closed center valve be used, and what type of pump would that imply? Or is the surplus pressure just dumping through a relief valve if the cylinder isn’t moving? I have some basic hydraulic and mechanical knowledge, so this is more of a curiosity question for my own education than anything else.Thank you for any insight or thoughts.
Hello folks,
I ran across two different Dirty Hands hydraulic wood splitter control valves on a surplus site. One is open center, one is closed center. It surprised me to see a closed center valve used on a wood splitter. I would have thought that open center would be preferred to limit heat buildup at the pump when the cylinder is not moving, and I thought/assumed that most two stage wood splitter pumps were positive displacement gear driven pumps.
Why would a closed center valve be used, and what type of pump would that imply? Or is the surplus pressure just dumping through a relief valve if the cylinder isn’t moving? I have some basic hydraulic and mechanical knowledge, so this is more of a curiosity question for my own education than anything else.
Thank you for any insight or thoughts.
