Product Description
This Kit is a Set of (2) 1 1/2" Slip Heater Unions with gasket which measures about 1 7/8" Inside Diameter to receive a 1 1/2" pipe X 1 1/2" MPT which measures about 2 3/8" OD on the Threaded Side.
The Union receives a 1 1/2" pipe or fitting on one side and then Screws to a 1 1/2" Heater Flange Split Nut on the other side. It will Glue to a 1 1/2" Pipe or Slice and screw to a 1 1/2" Heater Flange fitting. Don't be confused we also offer a Heater union that is 1 1/2" Slip X 2" to Heater or a 2" Slip X 2" Heater Union.
If your plumbing is 1 1/2" and your heater is 1 1/2" this part is correct.
This is usually found in 115V plug in Hot Tubs.
This version is the 2nd most popular version but still very rare. 2" x 2" is most popular and 1 1/2" X 2 is 3rd most popular.
