The genuine Pentair 273550 Manual Air Relief Assembly is purpose-built to safely release trapped air from your pool or spa filter tank, protecting against excessive pressure buildup and promoting steady filtration output. This assembly incorporates a manual air release valve along with a pressure gauge and is specifically compatible with Pentair FNS, Nautilus Plus, SM, and SMBW 4000 series filters. Manufactured from tough, chemical-resistant materials suited for demanding aquatic environments, it helps preserve efficient water flow and extends the service life of your filtration equipment. Its uncomplicated installation process makes it a go-to component for service professionals and experienced DIY pool owners who need to keep system pressure and flow in check.

Key Benefits

• Essential Pressure Protection: Vents accumulated air from the filter tank to prevent dangerous over-pressurization and support safe filtration operation.
• Maximizes Filtration Output: Maintains balanced internal conditions so filter media can perform at full capacity with unimpeded water flow.
• Wide Filter Compatibility: Engineered to work with Pentair FNS, Nautilus Plus, SM, and SMBW 4000 series filter lines.
• Tough, Weather-Ready Materials: Constructed to handle continuous chemical contact and outdoor exposure typical of pool and spa equipment installations.
• Gauge and Valve Included: Arrives complete with both the air relief valve and a pressure gauge for a turnkey OEM replacement.

What's Included

• Manual Air Relief
• Pressure Gauge

Compatibility

• Pentair FNS Filters
• Pentair Nautilus Plus Filters
• Pentair SM and SMBW 4000 Series Filters

Specifications

• Brand: Pentair
• Part Number: 273550

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