Swimables 2" Hi-Temp Union Compatible with All Pentair Whisperflo and Intelliflo Pumps for Inground Swimming Pool 21063-200-000-2" MIP x 2" Slip PVC - Made in USA - 2 Pack

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As pool tech, I’ve used multiple units over several yearsSome observations . . .1) threads on adapter into pump are clean , sturdy and precise.2) screws into pump with tight, complete fit.3) the o-ring that seats against pump is what seals airtight, not the threaded portion.4) therefore, I add generous amount of silicone lube to threads and oring.5) one slight difficulty - the new union is hard to unscrew. Hence, I add silicone lube to the union threads also. Problem solved.6) one caveat, installing just one union on pump can be difficult to impossible. Installing on both inlet and outlet is . . . easy.7) I’ve had some installed for several years. No problems.Recommended

I have bought 2 sets of these. They install super easy and do not leak at all.

Seems good quality. Does not fit Superflo pump as stated as compatible in the picture description. The internal superflo threads turned out to be smaller than whisperflo.

Work great for washing machine drain to put 2" drain instead of that little one