Pentair HiFlow Valve Sight Glass 272550 with vacuum projector
What does the vacuum projector, which I guess is just a thin round piece of rubber covering 3 holes in the end of the sight glass' do? The only thing I know it does is to leak water when valve is set to vacuum to waste or to rinse. I can remove the sight glass, remove the thin round rubber and put it back in the opposite side out and it seals for maybe 3 days then starts leaking again. Replaced it the whole site glass about 2 wks ago and the new one started leaking after a week. Sure makes a mess of my pump room!