TOREAD TRF-6430 Replacement Spa Filter (30 sq ft) – Compatible with Watkins 31489, Pleatco PWK30, Unicel C-6430 | NSF/ANSI 50

Meet the TOREAD TRF-6430 replacement spa filter, a compatible spare part designed to fit a wide range of Hot Spring spas and similar filter housings. With a 30 square-foot filtration surface and trilobal filtration fabric, this cartridge is built to sustain steady flow while trapping fine debris—helping keep spa water clear and inviting. The filter is engineered with chlorine-resistant end caps and a robust outer layer to withstand regular spa use, giving you confidence in your water care routine.

Compatibility and certifications matter when you select a replacement cartridge. The TRF-6430 is designed to replace Watkins 31489 and aligns with other common C-6430 style filters, including Pleatco PWK30 and Unicel C-6430. Always verify the cartridge length, outside diameter, and top/bottom opening to ensure a precise fit in your filter housing. In addition, the filter is NSF/ANSI 50 certified, reflecting adherence to safety and filtration standards for pool and spa products.

Filtration capacity and performance

• Filtration area: 30 sq ft for efficient debris capture
• Filtration precision: 50 microns to help remove hair, leaves, dust, sediment, and fine particulates
• Filtration fabric: Trilobal material with high surface area for consistent water flow
• Clearer water and steady flow support a more enjoyable spa experience

Durability and maintenance

• 25% thicker filtration fabric for enhanced longevity
• Chlorine-resistant and break-resistant end caps
• Estimated service life extends 20-30% versus standard cartridges
• Easy maintenance: trilobal fibers aid in stain capture and release

Usage and care tips

For optimal performance, clean the cartridge monthly or when your system pressure gauge reaches the preset value. Note: not designed for backwashing, as backwashing can cause damage to the cartridge.

As a Pool & Hot Tub Alliance (PHTA) member, TOREAD commits to trusted filtration performance and safe materials, helping you maintain clean, fresh water with confidence. Use this filter as part of a regular care routine to support consistent clarity and a pleasant spa experience.