Moen's M-Pact common valve system is the most important part of any faucet. It is designed for superior, long-lasting performance. Install it once, and you can upgrade style at any point in the decorating or construction process - or switch style years down the road - without replacing any faucet plumbing. Whatever bathroom fixture you want to change, there's a revolutionary M-PACT valve for you. Widespread, miniwidespread, bidet, roman tub and shower - everything is covered. Even your sink drain can change to a coordinating finish with M-PACT.