This part is a 45° 2" Pump Union To Heater Connection Kit & Gasket. The Union glues into a 2" fitting on one side and then Screws to a 2" Wet End(Pump) Threaded Part on the other side. Then a street 45° PVC pipe runs to the pump union. It will Glue into any 2" (About 2 3/8") fitting to make a tight plumbing application and screw to a 2" Wet End fitting which measures about 3" across the threads. We have plenty of these.
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