Fallon
Super Member
Correct.the volumes are different on the cylinder side and the rod side so technically they may move a little but they won't move a lot.
Mine has a tee and ball valves . you have to get out to hook the hoses anyways and having the ssqa cylinder plumbed in permannently just reduces the chances of contamination.
A crossover relief valve works on a snow plow as it has 2 single acting cylinders with equal volume. If you put a crossover relief valve on a double acting cylinder it doesn't do anything. The bottom of the cylinder has more volume than the rod end because of the volume the rod takes up. You end ip with a vacuum in one end or overpressuring. In either case nothing moves until the seals leak.