Posted 6/20/2019 11:43 (#7570504 - in reply to #7569818) Subject: RE: Better Built manure pump
Sioux County, NWIA
If it loses prime when you slow it down I’d bet there is a leak on the suction side allowing air in.
Edit, never mind the above, I was not understanding your problem correctly. Best thing to do would be to slow the pump speed down, pumps don’t like being throttled, especially on the suction side.