Pressure Balance Cartridge: Replacement for 40PHF2 40mm shower faucet cartridge compatible with standard tub/shower valves. Offers precise fit with a minimum opening angle of 23 degrees and a maximum rotation of 110 degrees, providing smooth operation and eliminating leaks or inconsistent water flow. Water Control: Pressure balancing mechanism helps avoid sudden changes in water by automatically adjusting hot and cold water mix, delivering a stable and comfortable shower experience without the need for constant manual tuning. Long Lasting Performance: Constructed with an earthen core and plastic outer body, this cartridge withstands over 70,000 cycles of use, providing reliable erosion resistance and drip performance through extended daily usage. For Easy Installation: Designed for straightforward DIY replacement; simply remove the old cartridge and insert the 40PHF2 unit into the existing valve housing, with no special tools or plumber needed, making it a quick fix for common shower valve issues. Use Scenarios: A worn or leaking cartridge in a standard tub/shower valve is replaced to restore leaks, smooth operation. Showers with hot and cold temperature fluctuations benefit from the pressure balancing mechanism, maintaining a stable temperature. Homeowners perform a quick DIY maintenance to restore performance and avoid service calls.