273550 | Pentair FNS Nautilus Plus SM & SMBW 4000 Series Filters Manual Air Relief Hayward navigator Wing the side of filter after

the side of filter after passing between the filter Housing and the Locking Ring

and are EPA-registered for safe use

walk-in techs use R0807205 for impeller swaps and motor servicing

and organic materials in spa water

Reliable Protection: Helps maintain the cleanliness and safety of your swimming pool

273550 | Pentair FNS Nautilus Plus SM & SMBW 4000 Series Filters Manual Air Relief Hayward navigator Wing the side of filter afterOEM Pentair 273550 Manual Air Relief Assembly is designed to safely vent trapped air from your pool or spa filtration system, helping prevent pressure related issues and supporting consistent filter performance. This air relief unit includes a manual release valve and pressure gauge and is specifically compatible with Pentair FNS, Nautilus Plus, SM, and SMBW 4000 series filters. Constructed from rugged materials for durability in demanding aquatic