💡 Keep Your Water Flowing Smoothly! Enjoy a robust flow rate of up to 10 gallons per minute. Maintain optimal performance of your water heater with scale inhibition. Quick and easy cartridge replacement for hassle-free maintenance. Extend the life of your hot water systems and plumbing fixtures. Designed for use with Aqua-Pure System AP430SS. 10 GPM flow rate Easy replacement 25-125 PSI range The 3M Aqua-Pure Whole House Scale Inhibition Inline Replacement Water Cartridge AP431 is engineered to protect your hot water heaters and plumbing systems from scale buildup. With a high flow rate of 10 gallons per minute and easy replacement features, this cartridge ensures your water systems operate efficiently and last longer.