Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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Swimables Air Vent Strainer For Pentair FNS & Nautilus | 172855 | SW-26-855
Fits these models (3)
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Goes with this part
CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Swimables Air Vent Strainer SW-26-855 is a direct replacement for Pentair part number 172855 and is designed for use with Pentair FNS, Nautilus, and Nautilus Plus D.E. filters. This component plays a key role in allowing trapped air to escape from the filter tank while preventing debris from clogging the air relief system. Made from durable, corrosion-resistant materials, the SW-26-855 ensures long-lasting performance and supports consistent filter operation. Its precise fit and sturdy construction make it an essential part of maintaining effective water circulation and pressure balance in your pool’s filtration system.
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Direct Replacement: Matches Pentair part number 172855 for FNS, Nautilus, and Nautilus Plus D.E. filters.
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Efficient Air Relief: Allows trapped air to escape while blocking debris from entering the air vent system.
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Durable & Corrosion-Resistant: Built from high-quality materials to withstand harsh pool environments.
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Supports Filter Performance: Maintains proper circulation and pressure balance for efficient filtration.
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Precision Fit: Ensures easy installation and reliable integration with compatible Pentair filter systems.
- (1) Stainless Steel Air Vent Strainer Cap
- Pentair FNS DE Filters
- Pentair Nautilus DE Filters
- Pentair Nautilus Plus DE Filters