Response to Hello Steven.  The Waterway Hi-Flo II AG Pool Pump has 1 1/2" union threads / 1 1/2" FPT intake and 2" union threads / 1 1/2" FPT discharge ports according to the Waterway website.   The Trap is 2" union X 1 1/2" union/ 1 1/2" FPT.      Hi-Flo II

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