1.5-inch heater union tailpiece

This 1.5-inch union is compatible with the vast majority of 1.5-inch FBT hot tub heaters found in Europe, as well as many spa heaters of other brands.

This part is joined to the heater using a split nut and a gasket.

Dimensions
Outside diameter of thread: 62 mm or 1.5-inch MBT
Inside diameter: 48 mm (female socket for 1.5-inch pipe)

Part numbers
Waterway: 417-4090