I was planning on installing a heater bypass within my pad plumbing. SO I purchased a Pentair 3-way valve 2 inch as the rest of the PVC is 2 inche. I also thought the three other Pentair 3-way diverters were also 2 inch. But, as I was dry-fitting things, I noticed the one I purchased was 2 inches on the inside and 2 1/2 on the outside slip). The others look to be 1 1/2" on the inside and 2" on the outside slip. I have confirmed that the PVC pipe is all 2 inch. Will this do anything to the flow or pressure on the pump, and why would the pool builder use the smaller diverter valves?
