UNDER LAVATORY: Intended for use with Sloan Optima faucets, the MIX-135-A mixing valve is designed for under-the-lavatory applications where the outlet temperature of hot water must be controlled for safe, economic use. RUGGED CONSTRUCTION: The mixing valve boasts a durable construction and features a solid brass valve body and corrosion-resistant internal components. TEMPERATURE FLUCTUATIONS: Installed in place of the Tee fitting supplied with the faucet prior to the solenoid valve, it is designed to quickly sense and compensate for temperature fluctuations induced by water temperature and pressure changes in the supply line. TAMPER PREVENTION: The valve is equipped with a water temperature adjustment stem with an additional lock nut to prevent unwanted tampering. SPECIFICATIONS: The valve's standard capacity is 4.0 gpm with a minimum cold water supply temperature of 5°F, maximum hot water supply temperature of 180°F, and a maximum operating pressure of 125 psi.