American Standard R121 Pressure Universal Review

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 fine tuning of temperature (125°handle rotation from off to hot). Pressure balancing valve cartridge: maintains constant output temperature in response to changes in hot and cold Supply pressure. Diaphragm system engineered to eliminate Cross flow. Avoids failure due to mineral deposits - ideal for use in hard water pressure balancing valve cartridge: maintains constant output temperature in response to changes in hot and cold Supply pressure. Diaphragm system engineered to eliminate Cross flow. Avoids failure due to mineral deposits - ideal for use in hard water. Back-to-back capability: hot and cold can be reversed quickly and easily. Adjustable hot limit safety stop: limits the amount of hot water allowed to mix with cold. Reduces the risk of accidental scalding.