Thank you so much for the help. I disassembled all the inlet and outlet fittings and re-did them with teflon tape and paste and fired her up. Working GREAT now ... 42 psi and major volume even with only one zone on. No pump cavitation... it sounds great. I didn't install the check valve and drip line. I thought I would try this first since the pump worked fine before. If I have future problems, I will install them. I guess I never thought sucking air would let me have better performance with eve...
Thanks Mitchgo. I was wondering about pulling air... the sound of the pump cavitating sounded like it. I had already resealed everything between the check valve and the pump, which didn't help. I didn't do anything ahead of the check valve because I wasn't losing prime, so I figured it was ok... maybe. I think I might go back and re-check for leaks again though. You recommend using teflon tape AND paste on the fittings?? I haven't tried that. With the bleeder... do you leave it on all the time, ...
Thank you for your reply Wet Boots. The pump has been in use for several years with no problems and suddenly developed this anomoly. I use the large nozzles in my sprinkler heads. Why would it do this now when never done before?
I have a 2 hp Wayne WLS200 pump. If I open more than one zone I get 40 psi and plenty of volume. If I only have one zone open with 6 sprinklers, my pressure will start surging from 20 to 40 psi and eventually drop to less than 20 psi and volume will drop. If I open another zone in addition so there are 12 or more sprinklers the pressure and volume will return to normal. It did not do this in the past. I have disassembled the pump and inspected the impeller, diffuser, and all seals. They appear t...
