Swimables Clamp Ring Knob Replacement R0357500 for Jandy & Zodiac DE/Cartridge Filters, Threaded Rod & Retainer

This replacement kit restores the clamp function that holds the filter lid or tank together, using a threaded rod, retainer and brass sleeve nut engineered to match the original hardware for Jandy CV, CL, DEV and DEL series filters. Swapping the worn or broken nut and knob assembly prevents leaks and keeps your filtration system serviceable without replacing the entire clamp ring. The part is compact, straightforward to install and intended as a like-for-like spare for older and current filter setups.

Which filters will this Swimables assembly work with?

The R0357500 was made to be compatible with many Jandy and Zodiac filter housings. It fits commonly used DE and cartridge models across CV, CL, DEV and DEL lines so you can replace a damaged clamp nut across several tank sizes.

• Fits CV340, CV460, CV580 cartridge and DE models
• Compatible with CL340, CL460, CL580 cartridge-style filters
• Works on DEV48/DEV60 and DEL48/DEL60 Zodiac-style filters
• Accepts CL580 parts and other Jandy CV/CL/DEV/DEL variants

How do I replace the old knob and nut safely?

Before loosening the clamp, release trapped air through the filter’s air-relief port to prevent sudden pressure release. Use a 9/16-inch wrench to slowly back off the brass nut, remove the old sleeve and spring, then install the new sleeve nut and reassemble in the reverse order.

• Open air-relief to vent pressure before removing the clamp
• Use a 9/16" wrench and turn slowly to avoid cross-threading
• Insert the new brass sleeve nut into the spring as the original was oriented
• Tighten until the clamp sits flush and secure, then test for leaks

What should I check during installation to prevent future issues?

Inspect the clamp ring, gasket and sealing surface for debris, nicks or deformation before tightening the new assembly. Cleaning the filter interior and checking the O-ring condition reduces the chance that trapped debris will cause excess pressure or an imperfect seal after reassembly.

• Clean out debris and accumulated dirt from the filter housing
• Examine the O-ring for cracks or flattening and replace if needed
• Confirm spring and retainer orientation matches the original layout
• Hand-tighten first, then torque gradually to avoid stripping threads

Will this part restore original performance or do I need other parts?

Replacing the clamp ring knob assembly restores mechanical clamping function but won’t correct problems caused by a worn O-ring, damaged clamp ring, or cracked lid. If you still see leaks after installation, inspect those components and replace them as necessary to fully restore the filter’s sealing performance.

• Part restores clamp hardware but not a damaged seal or cracked tank
• Pair with a new O-ring if the original shows wear for best results
• Replace any warped or corroded clamp ring segments for long-term reliability

This Swimables replacement assembly is for pool and spa owners, service techs and DIYers who need a direct, budget-friendly spare to revive Jandy and Zodiac filter clamps. If you maintain CV/CL/DEV/DEL-series filters, or want to keep common replacement hardware on hand for quick repairs, this threaded rod, retainer and brass sleeve nut kit provides a straightforward path back to a secure clamp without sourcing OEM-only parts.