The Pentair 172855 stainless steel air vent strainer is a replacement component designed for pool and spa D.E. filtration systems. This 3/4-inch air vent screen installs on the filter’s air relief tube to prevent debris from entering the air relief line while allowing trapped air to vent from the filter tank. Its stainless steel mesh construction provides durability and corrosion resistance in pool filtration environments.

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Key Features

• Replacement 3/4-inch air vent strainer designed for Pentair pool and spa D.E. filter air relief systems.
• Helps vent trapped air from the filter tank to maintain proper filtration pressure and water flow.
• Stainless steel mesh screen prevents debris and filter media from entering the air relief tube.
• Compatible with Pentair FNS and Nautilus Plus D.E. filter systems.
• Durable stainless steel and molded base construction designed for long-term exposure to water and pool chemicals.
• Compact design installs directly onto the air relief tube inside the filter tank for straightforward replacement.

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Product Overview

The Pentair 172855 air vent strainer is an essential part of the air relief system used in Pentair D.E. pool filters. Installed on the end of the air relief tube inside the filter tank, the strainer allows air to escape from the system while preventing debris or filter media from entering the air relief line.

Proper air venting helps maintain stable filter pressure and ensures water flows evenly through the filter grids or media. If the air relief screen becomes damaged or clogged, it can allow debris into the air relief line or restrict proper air venting. Replacing the air vent strainer restores proper air relief function and supports reliable operation of Pentair FNS and Nautilus Plus D.E. filtration systems.