Chicago Faucets No. 122-ABNF, ECAST® Thermostatic Mixing Valve (for 1 to 8 fittings). Standard 1/2 NPT threaded inlet and outlet union connections. Integral inlet check valves to protect against cross-flow. Adjustment cap with locking feature. Bronze body construction. Double throttling design to control both hot and cold water supply to the mixed outlet. Corrosion resistant internal components. Solid wax hydraulic principle thermostat. Thermostat controls both hot and cold water. Installs between the stop valves and faucet. Inlet filter washers to filter out debris. Single use or multiple faucet installations. ECAST® construction with less than 0.25% lead content by weighted average.