These anti-scald, pressure-balancing Bath/Shower Volume & Temperature Control Valves accommodate 12 styles of TRIMendous™ interchangeable bath/shower trim kits, including: Ceramix®, Colony® Soft, Copeland™, Green Tea®, Moments™, Portsmouth®, Princeton®, Quentin™, Reliant® 3, Seva™, Studio® and Town Square® (all sold separately).Cast Brass Valve Body: Durable - Quality that will last a lifetime. Ideal material for prolonged contact with water.Ceramic Disc Valve Cartridge:Assures a lifetime of drip-free performance. Allows easy control over both water temperature and volume.Pressure Balancing Valve Cartridge: Maintains constant output temperature in response to changes in relative hot and cold supply pressure. Diaphragm system engineered to eliminate cross flow. Avoids failure due to mineral deposits - ideal for use in hard water.Adjustable Hot Limit Safety Stop: Limits the amount of hot water allowed to mix with cold. Reduces the risk of accidental scalding.Exclusive Plaster Guard: Plaster guard is designed to protect valve during installation and serve as a mounting plate for thin-wall installations. Two piece design allows valve to be tested prior to trim installation.