1. Compatible with R11000 Faucet Valve Body: The RP51919 cartridge is specifically designed for the R11000 R faucet valve body. Please check the comparison photo of your shower faucet and valve before ordering to ensure compatibility. Verify the part number, model, and years to avoid confusion. 2. Brass Construction: Made of brass, the RP51919 6position diverter cartridge offers heat and corrosion resistance. Its sturdy construction ensures longlasting performance without deformation. Additionally, it is easy to operate and limits the maximum hot water flow to prevent overheating. 3. Water Temperature ControlFeaturing a pressurebalancing design with a safety function, the RP51919 replacement cartridge enables precise water temperature control within a safe range of 2°C. It protects you from sudden hot and cold water pressure changes, ensuring a comfortable shower experience without unexpected water surprises. 4. Easy Replacement: Replacing a leaky faucet is now hassle. Turn off the water supply, remove the old cartridge, and install the RP51919 diverter cartridge into the valve. There's no need to the entire faucet. Make sure to clean all debris from the old cartridge area before installing the one for performance.