Pentair Strainer Air Relief Assembly – 172855 | Fits FNS, Clean & Clear, Quad Filters
Ensure Safe, Reliable Filter Operation with Pentair OEM Parts
Air buildup inside your pool filter can reduce performance, stress your equipment, and even create unsafe pressure levels. The Pentair Strainer Air Relief Assembly – 172855 is a replacement part. It helps release trapped air from your filter system safely and easily. Compatible with Pentair FNS, FNS Plus, Clean & Clear, and Quad D.E. filters, this part helps keep your system balanced and running smoothly.
Trusted by pool professionals and homeowners alike, this genuine Pentair replacement part provides the reliability and durability you expect from the industry’s leading pool equipment manufacturer.
Why an Air Relief Assembly Matters
During filtration, air can become trapped inside the filter tank. Left unchecked, this pressure buildup can:
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Reduce water flow efficiency
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Increase wear on internal components
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Cause stress on filter housings
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Make it harder to achieve clear, balanced water
The air relief assembly solves this by automatically venting trapped air, ensuring your pool filter operates safely at the correct pressure.
Key Features & Benefits
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OEM Replacement: Pentair part #172855 ensures perfect compatibility
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Wide Compatibility: Fits FNS, FNS Plus, Clean & Clear, and Quad D.E. filters
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Durable Construction: Built to withstand heat, pressure, and poolside conditions
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Improves Safety: Prevents dangerous air pressure buildup in filter tanks
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Optimizes Filtration: Maintains proper water flow for cleaner, clearer pools
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Easy Installation: Simple swap-out design for quick replacement
Compatible Filters
This Pentair Strainer Air Relief Assembly is designed for use with:
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Pentair FNS D.E. Filters
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Pentair FNS Plus D.E. Filters
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Pentair Clean & Clear Cartridge Filters
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Pentair Quad D.E. Filters
⚠️ Always confirm your filter model and part number before ordering to ensure proper fit.
Installation Instructions
Replacing your air relief assembly is quick and straightforward:
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Turn Off Pump Power – Always cut power to the pump before working on the filter.
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Relieve System Pressure – Open your filter’s manual air relief to release pressure.
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Remove Old Assembly – Unscrew and disconnect the existing strainer air relief.
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Install New Assembly – Position the Pentair 172855 and secure tightly.
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Restart System – Power up the pump and check for smooth operation.
In most cases, installation takes just a few minutes and requires no special tools.
Long-Term Value
At just $32.95, this part offers:
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Safety Protection – Prevents dangerous over-pressurization
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Efficiency Gains – Keeps your filter performing at its best
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Extended Equipment Life – Reduces strain on your filter tank and pump
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Peace of Mind – OEM build quality ensures reliability
Compared to costly repairs or replacements, this small part provides outsized value by protecting your entire filtration system.
Product Specifications
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Manufacturer: Pentair
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Part Number: 172855
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Type: Strainer Air Relief Assembly
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Compatible Filters: FNS, FNS Plus, Clean & Clear, Quad D.E.
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Function: Releases trapped air for safe, efficient operation
Why Choose Benchmark Pool Supply?
At Benchmark Pool Supply, we specialize in providing OEM-grade parts for pool owners and professionals who demand reliability. When you shop with us, you’ll get:
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Genuine Pentair replacement parts
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Fast U.S. shipping to minimize downtime
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Expert product knowledge and support
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Competitive pricing backed by trusted service
We make it simple to keep your pool equipment running safely and efficiently.
FAQs About the Pentair Strainer Air Relief Assembly
Q: How do I know if my air relief assembly needs replacing?
A: Common signs include water or air leaks around the valve, difficulty maintaining pressure, or loss of function when venting air.
Q: Can this part be installed without professional help?
A: Yes. Most pool owners can replace the assembly in minutes with basic tools.
Q: Does this assembly work with cartridge filters?
A: Yes, it is compatible with Pentair Clean & Clear cartridge filters as well as D.E. models.
Q: How often should this part be replaced?
A: While there is no set replacement schedule, it’s wise to replace the assembly when you notice wear, leaks, or reduced venting performance.
Q: Is this an OEM Pentair part or a generic substitute?
A: This is a genuine OEM Pentair replacement, ensuring the correct fit and quality.
