Made by Waterway
This hot tub union fits Waterway union fits American and pumps, 1.5 Inch Diameter. The Hot Tub Pump Union Nut can be fitted in many brands of hot tub and spa, including: Circ Master, Aqua flo and waterway Hot Tub Pumps.
Used to replace a broken unions or for a retro fit where the original union thread doesn't fit.
1.5"Hot Tub Union Nut and Tail piece