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.