Can you use a Moen replacement cartridge 1200 instead of a 1222?

No, you cannot use a Moen replacement cartridge 1200 instead of a 1222. The 1200 and 1222 cartridges are designed for different valve models and have distinct features and dimensions, making them incompatible with each other. Always ensure you use the correct cartridge specified for your faucet model to ensure proper function and prevent leaks.