This part is an 1-1/2" slip x 1-1/2" female butress thread pump union with gasket for hot tub, jetted bath and spa applications. The threaded end of the 1-1/2" pump union screws to your wetend or pump and your pipe or fitting glues inside of the slip end. The inside diameter of the slip part is about 1-7/8" and the inside diameter of the female threads measures about 2-3/8". If the male thread on your pump measures 2-3/8" across the threads then this is the correct union for you.
Can be used in many applications, even older plastic heater setups. Some common pump models this union would fit are the Aqua-Flo models FMCP, FMHP, FMVP, CMHP, CMCP * Waterway models Center Discharge, SpaFlo, E-Series, Iron Might, Uni MIght * Vico/Balboa models Ultima, Ultima Plus, Ultima Circ, WOW
| Half Union Fitting Complete | Complete Half Union |
| Union Fitting Application | Pump |
| First Plumbing Connection Size | 1-1/2" |
| First Plumbing Connection Type | Female Buttress Thread (fbt), Slip (s) |
| Second Plumbing Connection Size | 1-1/2" |
| Second Plumbing Connection Type | Slip (Sl) |
