🔒 Secure Your Comfort with American Standard! Adjustable hot limit safety stop minimizes scalding risks for peace of mind. Engineered diaphragm system prevents cross flow and resists mineral buildup. Crafted from premium cast brass for a lifetime of reliable performance. Maintains consistent water temperature, adapting seamlessly to supply changes. Ceramic disc valve cartridge ensures smooth, drip-free operation and precise temperature adjustments. Drip-Free Ceramic Hot Limit Safety Durable Brass The American Standard R121 Pressure Balance Rough Valve Body is a robust and reliable plumbing solution designed for long-lasting performance. Made from durable cast brass and featuring a ceramic disc valve cartridge, this valve ensures a lifetime of drip-free operation and precise temperature control. Its innovative pressure balancing technology maintains a consistent output temperature, making it ideal for homes with fluctuating water supply pressures. With added safety features and a user-friendly design, this valve is perfect for both new installations and upgrades.