I recently installed an IntelliFlo Variable Speed Pump #011018 and new SWG. Have noticed that the filter drains
over night and I have to bleed it upon startup. I installed new check valve at filter outlet but that did not fix problem.
I tightened pressure valve where it attaches to top of tank. The filter is the highest item in the system.
Could the pressure gage assembly itself be leaking? It is about 12 yrs old. Otherwise what could be source of problem.