POOLPURE C-6430 Spa Filter 30 sq ft – Replacement for 31489, PWK30, FC-3915 (3 Pack)

Enhance spa water clarity with a trusted replacement filter

Meet the POOLPURE C-6430 Spa Filter, a compatible cartridge designed to fit a wide range of popular spa brands. With a generous 30 square feet of filtration area and Trilobal Filtration Fabric, this filter is built to help capture hair, leaves, dust, and fine sediment as water advances through the system. It is engineered for steady performance in everyday spa use and can help maintain a inviting, clear water look without requiring extra steps from you.

Constructed to maximize surface area, the trilobal fabric promotes a more efficient filtration path. The result can be consistent flow through your filter housing and reliable water clarity, even during busy spa sessions. The design emphasizes practical maintenance: the fabric is engineered for easier debris capture and release, so cleaning remains straightforward when you schedule a routine cartridge refresh.

Key specifications you may notice

• Filtration area: 30 square feet
• Filter length: 10 1/2 inches; outside diameter: 5 7/8 inches
• Top and bottom opening: 1 15/16 inches
• Filtration material: Trilobal fabric
• Filtration efficiency: approximately 50 microns

Certification, trust, and real-world use

This filter is certified under NSF/ANSI 50, a mark of tested safety and performance for pool and spa filtration. POOLPURE is a member of the Pool & Hot Tub Alliance, underscoring a commitment to industry standards and durable results. Real-world testing and media attention, including coverage by NBC Local, highlight a focus on dependable water quality in demanding environments.

Compatibility, care, and practical notes

This is a compatible replacement for models such as Watkins 31489, PWK30, Unicel C-6430, Filbur FC-3915, and the 73178/73250/71825 line, among others. As an independent brand, POOLPURE emphasizes fit and performance while noting that original manufacturer names and part numbers are provided for reference only. A quick fit check ensures your cartridge size and openings align with the C-6430 pattern.

• Not designed for backwashing; attempting to backwash may cause cracks or permanent damage.
• Sold as a 3-pack for convenient replacements and consistent maintenance planning.
• To keep filtration at peak, perform monthly cleaning based on spa usage and water conditions.

In short, the POOLPURE C-6430 offers a practical path to clearer spa water, with broad model compatibility, certified safety, and a maintenance-friendly design. The three-pack format provides ongoing replacement value for regular spa care, helping you stay on top of filtration without guesswork.