Pentair U9-226 O-Ring Diffuser Replacement for select Sta-Rite Pool and Spa Filters;

This O-ring diffuser is designed to use with Sta-Rite PLM aboveground pool and spa cartridge filter systems as well as compatible with Sta-Rite Waterford aboveground pool and spa sand filter systems. Fits with Sta-Rite Max-E-Glas/Dura-Glas pool and spa in ground pump series for "Full Rate" and "Up-Rate" models. This plastic suction trap O-ring diffuser is designed to use with Pentair JWPA and JWP above ground series pool and spa 1/2, 3/4 HP pump models. Also use with Sta-Rite Waterford pool and spa sand filter system valve. Measures 4-inch diameter.