Last year, the Chicago Faucet Co. introduced the MeterMix™ 3300, a metering faucet designed to provide temperature adjustability for dual line installation. Now, Chicago Faucets has introduced the 3400 Metering Faucet, with many of the same features and the same durability of the original MeterMix™, but in a single-supply, non-mixing design. The Chicago Faucet Co. Circle 5.