So, I did a thing, and now I need to cement in a new union, which for an SP3220 is Hayward SPX3200UNKIT and every source lists it as a 2" union. The unsettling part is that my unions measure 2 1/4 ID. In a few days I'll find out. The local supplier wants $50 for a pair of them, so filtration will have to wait a couple more days, but I'm stocked up for a SLAM so no worries
I ordered a 2.5" slip coupling as well... hopefully it's all i need.
I'll keep you posted, perhaps this will be a PSA.
Amazon.com: Genova Products 30190 PVC Slip Coupling, 2-1/2" : Industrial & Scientific
Buy Genova Products 30190 PVC Slip Coupling, 2-1/2": Coupling Nuts - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
smile.amazon.com
I'll keep you posted, perhaps this will be a PSA.

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