Swimables 3/4" Stainless Steel Air Vent – FNS Plus & Nautilus Style Replacement SW-26-855
Durable Air Release for Safe and Efficient Filter Operation
Your DE filter depends on reliable venting to release trapped air and maintain proper pressure balance. The Swimables 3/4" Stainless Steel Air Vent (SW-26-855) is built as a rugged replacement for Pentair FNS Plus and Nautilus style filters, offering strength, chemical resistance, and long-lasting durability.
Made from stainless steel, this vent resists rust, corrosion, and chemical wear, even in demanding pool environments. If your current vent is cracked, leaking, or rusted, the Swimables SW-26-855 restores safe pressure control and keeps your filter running at peak performance.
OEM-Style Fit for Pentair FNS Plus & Nautilus Filters
The Swimables SW-26-855 is designed as a direct replacement for Pentair FNS Plus and Nautilus style filter systems. It threads securely into the filter housing, providing a tight seal and reliable venting action.
Its 3/4-inch sizing ensures compatibility with these models, while the stainless steel construction provides an upgrade over standard plastic parts. Pool owners can expect longer service life and consistent performance, even under heavy use.
Why Choose the Swimables Stainless Steel Air Vent?
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OEM-Compatible Design: Fits Pentair FNS Plus and Nautilus filters.
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Stainless Steel Build: Stronger and more durable than standard plastic vents.
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Corrosion-Resistant: Handles chlorine, DE powder, and harsh pool environments.
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Secure Air Release: Prevents dangerous pressure buildup in the filter tank.
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Reliable Performance: Keeps filtration consistent and efficient.
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Affordable Upgrade: Delivers long-term durability at a cost-effective price.
Why Air Vents Are Essential
Air vents are small parts with a big impact. They allow trapped air inside the filter tank to escape, ensuring safe operation and consistent water flow. Without a properly working air vent, you risk:
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Unsafe pressure buildup in the filter tank
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Inaccurate or unstable pressure readings
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Reduced filtration efficiency
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Strain on pump and plumbing components
Replacing a worn or damaged vent with the Swimables SW-26-855 ensures your system operates safely and reliably.
Signs Your Air Vent Needs Replacement
Air vents can wear out or corrode over time, especially in outdoor or saltwater pools. Replace yours if you notice:
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Leaks around the vent housing
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Rust, corrosion, or cracks in the vent body
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Air not releasing properly when the valve is opened
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Fluctuating or inaccurate pressure gauge readings
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Difficulty maintaining consistent system pressure
Installing the Swimables stainless steel vent quickly resolves these problems and restores safe operation.
Technical Specifications
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Part Number: SW-26-855
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OEM Compatibility: Pentair FNS Plus & Nautilus filters
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Material: Stainless steel, corrosion-resistant
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Size: 3/4-inch threaded design
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Function: Releases trapped air to maintain safe, balanced filter pressure
Protect Your Pool Equipment
A properly functioning vent prevents pressure buildup that could damage your filter tank, pump, or seals. By replacing worn parts with the Swimables SW-26-855 Stainless Steel Air Vent, you protect your system from costly repairs and ensure long-term performance. The stainless steel upgrade adds durability, making it an ideal choice for both residential and commercial pools.
Quick and Simple Installation
The SW-26-855 is designed for easy installation. To replace:
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Shut off the pump and relieve all pressure from the filter system.
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Unscrew the old vent from the filter housing.
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Thread in the new Swimables stainless steel vent securely.
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Restart the system and open the vent until a steady stream of water indicates that air has been released.
With its straightforward design, installation takes just minutes and requires no special tools.
The Swimables Standard of Quality
Swimables has built a reputation for producing durable, cost-effective replacement parts that meet or exceed OEM performance. The SW-26-855 Stainless Steel Air Vent is no exception—combining rugged construction, precision fit, and excellent value for pool owners and professionals.
Frequently Asked Questions (FAQ)
Q: Is this vent compatible with all Pentair filters?
A: No, it is specifically designed for Pentair FNS Plus and Nautilus style filter systems.
Q: Why choose stainless steel over plastic?
A: Stainless steel resists cracking, UV damage, and chemical wear, providing longer life and better durability in demanding environments.
Q: How do I know if my vent needs replacing?
A: Replace it if you notice leaks, corrosion, cracks, or difficulty releasing air from your filter system.
Q: Can I install this vent myself?
A: Yes. Installation is simple and requires only basic hand tools.
Q: What size is the vent?
A: It is a 3/4-inch threaded design made to fit Pentair FNS Plus and Nautilus filters.
Q: Does this vent resist pool chemicals and DE powder?
A: Yes, its stainless steel construction is highly resistant to chlorine, DE, and pool chemistry.
