Half Union Fitting Complete Set... The Threaded side measures about 2 3/8" Inside and the Slip Glue end measures about 1 7/8" Inside Diameter... Note: Although this measures very much like a 1 1/2"...
This part is a Cal Spa Safety Suction Tee Fitting that has a 2" Pump Union that would measure about 3" Inside Diameter X 2" Slip Fitting that is 2 3/8" Inside Diameter with a 1/8" MPT Tap on the top...