Scale Inhibitor Filter Cartridge for 3M Aqua-Pure AP430SS/AP431, 3/4" NPT, 10 GPM Whole House Anti-Limescale, BPA-Free, Leak-Proof$$Tools & Hardware Other

Prevents Limescale & Corrosion: Advanced polyphosphate formula inhibits buildup in pipes/appliances (heaters, dishwashers), extending their lifespan. Leak-Proof Safety: Food-grade BPA-free housing with reinforced design ensures no leaks even at 10 GPM flow rates. Maintains Water Pressure: Continuous filtration without pressure drop for whole-house water supply. Easy Replacement: Replace cartridge every 6 months (actual lifespan depends on water hardness). Compatibility: Direct replacement for 3M AP431, HF8-S, KW431; compatible with AP430, AP430SS, SF18-S systems.