I'm in the process of installing a 30' round above ground pool. with a wide mouth skimmer and a 1hp pump. I want to do 2" pvc from the skimmer to the pump. the last pool i did i just used 1.5" and i always felt the 2" pipe on the suction side.
My question is the pump apears to have threads for 1.5" but the out side of the pump inlet is also threaded can i use the outside threads to keep the flow restriction to a minimum? or do i just use reducers i dont like this as it seems to defeat the idea of two inch pvc
Pictures of the threads im talking about. let me know what you guys think.