Today the builder ran the plumbing for our new pool. They are using all 2" plumbing. I have the following equipment: pump, cartridge filter, heater, Goldline cell SWG. (Details in my sig).
I'll try to describe the plumbing as it was too dark to get a pic by the time they left.
Separate main drain and skimmer line to a 3 way jandy valve. From 3 way Jandy valve thru a check valve (with clear window) into pump. From pump to filter. From filter thru flow switch to heater. From heater thru check valve (no window) to cell. From cell to returns.Â*
What puzzles me is in the box of equipment delivered to be installed were 2 on/off jandy valves that they did not use. Should they have used them? Where would they go if so?
It seems to me there is no way to cut off flow from pool to equipment. The three way can open both skimmer and drain, just drain, or just skimmer. But there is no way to close it off completely.Â*