273550 | Pentair FNS Nautilus Plus SM & SMBW 4000 Series Filters Manual Air Relief Hayward navigator Wing pool not filtering evenly center

pool not filtering evenly center pipe may be cracked

replace worn or cracked pump basket with R0445900

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

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

Reliable Connection Assurance: Compatible with standard PVC adhesives for strong

273550 | Pentair FNS Nautilus Plus SM & SMBW 4000 Series Filters Manual Air Relief Hayward navigator Wing pool not filtering evenly centerOEM 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