The High Velocity Series Taco 0012 Cartridge Circulator is specifically designed for high-flow/medium-head applications in large residential/light commercial systems. FEATURES Exclusive Anti-Condensate Baffle (ACB) with Ambient Air Flow?Protects motor windings against condensate buildup. High Velocity Performance. Compact Design. Quiet, Efficient Operation. Unique Replaceable Cartridge Design Field Serviceable. Direct Drive-Low Power Consumption. Self-Lubricating. No Mechanical Seal. Unmatched Reliability --Maintenance Free. Universal Flange-to-Flange Dimensions. Cast Iron or Bronze Construction. APPLICATIONS Large BTUH Boilers. 2 inch. Recirculation Loops. Primary/Secondary Loops. Commercial Water Heaters. Light Commercial Heating and Cooling Systems.