The Moen Commercial Heavy Duty Brass Shell PosiTemp One Handle Faucet Cartridge Replacement offers quick and hassle free replacement for Moen PosiTemp one handle shower faucets. This heavy duty brass cartridge is designed for the demanding needs of commercial and institutional facilities. The PosiTemp valve system maintains consistent water pressure and temperature while you shower. This durable brass cartridge has been engineered and designed for easy installation and removal. It is designed to remedy issues with PosiTemp faucets in tubs and showers like leaking or difficulty maintaining water pressure. A graphite composite pressure balancing spool design ensures this cartridge will stay firmly in place.