This complete heater union assembly includes everything needed for one side of your flow-through style heater tube: a 1 1/2" threaded split nut designed to fit over the heater tube flange, a 1 1/2" threaded x 1 1/2" slip PVC tailpiece union, and a sealing gasket that sits between the union and tube flange. Perfect for spa and hot tub heater plumbing connections, this kit provides a secure, leak-free connection. Important: Each kit services one side only - you'll need two complete kits to connect both ends of your heater tube. Review the size chart and measurement photos carefully to ensure proper fitment for your specific heater model.
| Heater Union Part Type | Split Nut, Tailpiece |
| Half Union Fitting Complete | Complete Half Union with Split Nut |
| Union Fitting Application | Generic |
| First Plumbing Connection Size | 1-1/2" |
