The Hayward Union Adapter Assembly is no longer available
With this adapter you can convert the old style Hayward 2" Thin Threaded Union to a 1 1/2" threaded fitting which = 1 7/8" O.D. standard wet...
This item is a Replacement Diverter Cap and O-ring Kit for a 1" Waterfall or Neck Jet Control.. The inside thread measurement is about 1 5/8" and the center hole is about 3/4".. It uses (2) Small...