Swimables Spring Barrel Nut SW_26_531 is a direct-fit replacement for Pentair filter models including Clear and Clear, Quad DE, and FNS Plus. This critical component secures the internal spring barrel assembly, ensuring precise pressure alignment within the tank to prevent leaks and maintain safe operation. Engineered from corrosion-resistant materials, it withstands both chlorinated and saltwater pool environments for long-term reliability. The SW_26_531 restores proper filtration performance and includes all necessary hardwareÑspring, bolt, and washersÑfor fast, secure installation during service or maintenance.

• Direct OEM Fit: Replaces Pentair part number 53108900 and is compatible with Clear and Clear, Quad DE, and FNS Plus filter systems.

• Secures Internal Assembly: Locks the spring barrel in place to maintain consistent internal pressure and prevent operational misalignment.

• Built for Harsh Conditions: Constructed from durable, corrosion-resistant materials that hold up under chlorine and saltwater exposure.

• Supports Leak-Free Performance: Essential for restoring filtration integrity and helping prevent internal pressure loss or tank leakage.

• Complete Kit Included: Comes with spring, bolt, and two washers for a full hardware replacement and reliable installation.

• (1)ÊSpring
• (1)ÊBolt
• (2)ÊWashers

• Pentair Clear and Clear Filters
• Pentair Quad DE Filters
• Pentair FNS Plus Filters

Need guidance on installing the Swimables Spring Barrel Nut SW_26_531 in your Pentair filter system? This section covers compatibility, installation techniques, and in-store pickup considerations for replacing part number 53108900. Whether you're dealing with leaks or maintaining internal pressure, this component is critical for restoring your filter's safe operation.

Installing the SW_26_531 in Pentair Filters

This barrel nut replacement fits precisely in compatible Pentair filters, including Clear and Clear, Quad DE, and FNS Plus models. Installation is straightforward and requires only basic tools to secure the spring barrel within the filter assembly.

How do I replace the spring barrel nut on my Pentair FNS Plus filter?

Is the SW_26_531 available for in-store purchase at Discount Pool Mart?

Do I need to shut off the system before removing the original nut?

Can I use this part with older Clear and Clear filter models?

What tools are needed to properly install this barrel nut assembly?

Securing Pressure and Preventing Leaks

The SW_26_531 ensures the spring barrel stays aligned and pressurized, which helps prevent dangerous pressure imbalances and leaks in your filter tank. Proper installation restores safe operation and extends equipment lifespan.

Will this part stop my Pentair filter from leaking around the center clamp?

Can I walk into a store and get a part that maintains spring tension inside the tank?

Does replacing this nut restore proper filter pressure?

How critical is this nut to overall filter integrity and performance?

Is the SW_26_531 needed after opening the filter for grid cleaning?

Corrosion Resistance and Long-Term Durability

Constructed from chemical- and salt-resistant materials, this nut and hardware set is built for long-lasting performance in harsh pool environments. ItÕs a small but essential part for reliable seasonal operation.

Will this replacement nut corrode over time in saltwater pools?

Can I inspect the old nut in-store to compare it to this model?

How often should this part be replaced to avoid system failure?

Does this nut work even after years of chlorine and UV exposure?

Can I use this barrel nut with other OEM parts in my filter system?