Pentair Black Manual Air Relief Assembly | SM & SMBW 4000 Series D.E. Filter, FNS Filter, Nautilus Plus Filter | 273550Z Transformers general purpose sequestering agent

general purpose sequestering agent

It draws water through the strainer housing and accelerates it outward through centrifugal force

Cost effective repairs

Snap-adapt handle

Pentair Black Manual Air Relief Assembly | SM & SMBW 4000 Series D.E. Filter, FNS Filter, Nautilus Plus Filter | 273550Z Transformers general purpose sequestering agentOEM Replacement Manual Air Relief Assembly for Pentair D. E. and Cartridge Filters The Pentair Black Manual Air Relief Assembly (273550Z) is the OEM replacement air relief assembly for the SM and SMBW 4000 Series D. E. Filter, FNS Filter, and Nautilus Plus Filter product lines. IMPORTANT: CONFIRM COLOR BEFORE ORDERING This is the BLACK version of the air relief assembly. Pentair produces this assembly in multiple color variants for different filter