Uni-Nut Retainer, 1-1/2", for 1-5/8" Housings : 86-02348

Uni-Nut Retainer, 1-1/2", for 1-5/8" Housings Aquatemp Products Heater Uni-Nut® It is a patented design to end leaking split nuts on heaters. The Uni-Nut® is a one-piece nut that can be tightened by hand and changed in the field by removing a color-coded retainer. The black retainer is generally used on 1-5/8" tube while blue retainers are used on 5.5kW heaters. Red retainers usually denote heaters of other wattages. Although there may sometimes be exceptions, the Uni-Nut® is generally not a replacement for split nuts due to different flange sizes Heater Union Part Type: Retainer Replaces 390316,