MIZUDO AP431 Replacement Cartridge delivers powerful scale control with food-grade, NSF-tested materials that keep your water clean while protecting heaters, dishwashers, and plumbing from damaging buildup. Designed for steady high flow and up to 6 months of use, it ensures consistent performance, saves energy, and reduces maintenance. Easy to replace and fully supported by MIZUDO's customer service, this cartridge is compatible with Aqua-Pure AP430/431 systems and installs seamlessly for reliable whole-house protection
Effective Scale Control: Polyphosphate media helps stop calcium and magnesium from forming hard deposits, This protective layer keeps showers, heaters, and plumbing safe from limescale and extends system life.
Certified Safe Materials: Made from food-grade components and NSF-tested for reliability，Provides safe, clean water while protecting appliances for your family’s daily use.
Steady High Flow: Supports up to 10 gallons per minute with a lifespan of 6 months, The advanced design reduces clogging, ensuring smooth and consistent water flow.
Extended appliance protection: prevents scale buildup inside water heaters, dishwashers, and washing machines reduces maintenance needs and improves energy efficiency
Easy replacement: compatible with 3m aqua-pure ap430, ap430ss, and sf18-s, as well as ap431, hf8-s, and kleenwater kw431 makes switching and replacement hassle-free
Reliable after-sales support: MIZUDO provides full support from installation to daily use assistance is always available if you face product or setup issues
Installation guidance: includes only the filter cartridge for flexible setup for best performance, install on the cold water line feeding your water heater