Pentair Strainer Air Relief Assembly – 172855 | Fits FNS, Clean & Clear, Quad Filters
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Restore Proper Air Release and Safe Filter Operation
Air trapped inside a pool filter can reduce efficiency, increase pressure, and create unsafe operating conditions. The Pentair Strainer Air Relief Assembly (172855) is an OEM replacement component designed to release trapped air from Pentair cartridge and DE filters, helping restore proper circulation and safe system operation.
If your filter is slow to prime, pressure readings are inconsistent, or air remains trapped after servicing, replacing the air relief assembly is a simple fix that can prevent long-term damage and improve filtration performance.
Designed for Pentair Filter Systems
This genuine Pentair air relief assembly is engineered to fit select Pentair filter housings precisely, ensuring reliable air venting without leaks or pressure loss. It is commonly used during routine maintenance or when an existing air relief becomes clogged, worn, or damaged.
Compatible with multiple Pentair filter platforms, this assembly helps maintain optimal internal pressure and efficient water flow.
Why the Air Relief Assembly Matters
The air relief system plays a critical role in filter safety and performance. When it fails, trapped air can cause pressure spikes, poor filtration, or difficulty reassembling the filter after cleaning.
Why it matters:
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Releases trapped air to prevent pressure buildup
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Helps filters prime faster after service
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Supports accurate pressure gauge readings
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Improves overall filtration efficiency and safety
Genuine Pentair OEM Quality
As an OEM Pentair replacement part, the 172855 Strainer Air Relief Assembly is manufactured to exact factory specifications. This ensures proper fit, dependable sealing, and long-term durability in residential and light commercial pool systems.
Using genuine Pentair parts helps protect your equipment investment and ensures compatibility with existing filter components.
Compatibility & Common Applications
The Pentair 172855 Strainer Air Relief Assembly is designed for use with:
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Pentair FNS Plus filters
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Pentair Clean & Clear cartridge filters
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Pentair Quad DE filters
Always verify filter model compatibility before installation.
Installation Notes
Power off the pump and fully depressurize the filter before servicing. The air relief assembly is typically accessible at the top of the filter housing and can be replaced during routine filter cleaning. If you are unsure about proper installation or system safety, professional service is recommended.
Product Specifications
| Specification | Details |
|---|---|
| Product Name | Pentair Strainer Air Relief Assembly |
| Part Number | 172855 |
| Manufacturer | Pentair |
| Application | Pool filter air relief |
| Compatible Filters | FNS Plus, Clean & Clear, Quad DE |
| Function | Air venting and pressure relief |
| OEM | Yes |
Buy with Confidence from Benchmark Pool Supply
When you purchase the Pentair 172855 Strainer Air Relief Assembly from Benchmark Pool Supply, you’re buying from a local pool equipment expert who understands real-world maintenance and repair needs. We stock genuine OEM parts and help ensure you get the right replacement the first time.
Our team in Fresno is here to support DIY pool owners and professional service technicians alike.
