Pentair Tank Bottom | Clean & Clear RP Filters / SEP Separation Tank | 178731Z Automated Chemical Feeders The open/open end cap configuration

The open/open end cap configuration means this cartridge relies on your filter housing's internal standpipe or manifold to seat correctly — verify your housing supports this design

For In Ground Units from 10

Ride the serpent

Replace both sealing surfaces together for a lasting repair

Pentair Part Number 85017800 Color Beige Style Old Style Quantity Included 1 Lid Dimensions 9" Diameter Pro Tip

Pentair Tank Bottom | Clean & Clear RP Filters / SEP Separation Tank | 178731Z Automated Chemical Feeders The open/open end cap configurationThe Pentair Tank Bottom (178731Z) is the OEM replacement lower tank shell for the Clean & Clear RP cartridge filter series and the SEP Separation Tank series (SEP 48, SEP 72, SEP 96, and SEP 144). What It Does The tank bottom forms the structural lower half of the filter or separation tank housing, containing the water under pressure during filtration. A cracked, warped, or leaking tank bottom compromises system pressure integrity and must be replaced