Pentair Tapered Valve Rotor Seal for Purex SM & SMBW Filters | 071720 C9650 The companion partial grid is

The companion partial grid is Unicel PG-1905 — order both for a full service

replacement spa filter cartridge engineered for top-load filter housings that use a 1-1/2" male pipe thread (MPT) bottom connection

match the part number stamped or molded on your existing manifold to 073270Z

On variable-speed SuperFlo and SuperMax pumps

Pentair Tapered Valve Rotor Seal for Purex SM & SMBW Filters | 071720 C9650 The companion partial grid isThis tapered valve rotor seal is designed to use with Pentair SM & SMBW 2000 series pool and spa D. E. filters and also compatible with Pentair SM & SMBW 4000 series pool and spa D. E. filters.