Helping a buddy fix his plumbing. On the return there is a section of pipe that connects the two and with the return set to pool, water still goes to the spa. There is a leak at what appears to be a check valve (circled in blue) and I need to repair it.
Does that loop have to be there or can I cap it off? What is the purpose of it? Best way to repair it?
Does that loop have to be there or can I cap it off? What is the purpose of it? Best way to repair it?