Pentair Strainer Air Relief Assembly – 172855 | Fits FNS, Clean & Clear, Quad Filters

The Pentair Strainer Air Relief Assembly (Part #172855) is a factory OEM replacement part designed for Pentair pool and spa filters. This essential component allows for quick and easy manual air relief during filter operation, helping to maintain optimal water pressure and filtration efficiency.

Made from durable, chemical-resistant plastic, the assembly includes the pressure relief valve and mounting components. It’s compatible with several Pentair DE and cartridge filter systems and restores proper venting and pressure regulation.

Key Features:

• Genuine Pentair replacement part

• Includes air relief valve and housing

• Model #: 172855

• Easy twist operation to bleed trapped air

• Maintains safe operating pressure in filter system

• Resistant to chlorine and UV exposure

Fits the Following Models:

• Pentair FNS Plus DE Filters

• Pentair Clean & Clear Plus Cartridge Filters

• Pentair Quad DE Filters

• Pentair System:3 Modular Media and DE Filters

• Other compatible Pentair filter systems using part #172855