In my pool I have 2 pool drains at the bottom, 2 water outlets on the side and 1 skimmer.
When I shut off the two-way valve, the pump runs itself dry. So I'm asking myself, what is this pipe for? There is no water coming out of it and going into the pump.
I believed, since I have two pool drains at the bottom, that each was routed with separate piping. Looking at schematics online I can't find any where this is would be the case. It looks to me the most drains are connected with a T and then run with a single pipe to the filter installation.
Can anybody possibly tell me what the pipe with the question mark is for?
