OK, new pool owner here with tons of questions. But for now just one. I purchased 2 solar heaters for AG 18x33 oval pool. My current set up is this: skimmer-pump-filter-chlorinator-pool return. What I want to do is connect the heaters to the filter and then return to the chlorinator. HOWEVER, I want to have shut off valves so I can bypass the heaters if it is a cloudy day or the water is too warm (not likely). I thought I was just going to get a 3 way valve from the pool store, BUT, my equipment is Proline and have threaded connections and they don't sell 3 way valves with threaded connections. Is there something I can get from Home Depot plumbing department that will work. I think I need to use a T Piece or Y connector at the chlorinator and at the filter as well as shut offs. I have a feeling the pool store charges $$$$ for something that I could piece together for a lot less.
Please respond in plain language. I KNOW NOTHING!!