Spa Components – 2in Hot Tub Heater Split Nut Union Assembly, FMBT2S

Hot tub heater 2″” Split Nut Union kit, has a 2″” Female Buttress Thread FBT, x 2″” Slip PVC. This 2″” heater union assembly fits most 2″” flow thru heaters used on spas and hot tubs. HU-FMBT2S Split-Nut Union Assembly includes union tailpiece, 2-piece lock nut with screws, and o-ring to seal up against the heater tube flanged end.