Pipe - Pump Unions - 2 Pack 1.5 Inch

These unions come in a pair of two and are referred to as 1-½" with threads that actually measure 2-3/8" ID and a slip end tail piece for plumbing thats referred to as 1-½" with an actual ID of 1-7/8". The threads on these unions are not universal, they fit standard pool and hot tub pump threads and pool filters with standard threads referred to as 1-½". They will not fit any any pool or hot tub pumps or pool filters with proprietary threads such as Hayward, Pentair, Jandy Zodiac etc.