tpic402
New member
Just finished refurb of 3 point sprayer it has a hypro 6 roller pump my question is when i shut off all the manifold valves the pressure drops to 0 psi it does build pressure up to 40 psi with the spray wand open, no liquid goes to bypass if i shut off all the maniflod valves. should a roller pump build more than 40 psi at 540rpm,should not all the output bypass if the valves are shut off