Mad you seem like the kind of guy who would appreciate what I'm going to do. I don't like the idea of a DPOCV because of the cylinder pressures that can develop with cold oil. I've seen cylinders blow their guts in my business without purging the oil over tool circuits until warm when temperatures get below 20 degrees F even in the South. I'm going to fabricate steel tubes into counter balance valves on the barrels. I want her to stay up until I'm ready for her to come down. Don't worry I'll get pressure readings up to and including relief pressure so I won't break weldments. Don't be MAD at old Ob1..... /forums/images/graemlins/grin.gif