Danfoss-Flomatic has released a revised four-color condensed catalog featuring its unleaded backflow preventers. The literature gives an overview of the backflow program with flow curves and dimensions. These backflow preventers are designed to protect drinking water from cross-connections and to deliver both top performance and reliability; they come in a number of sizes and configurations, from 1⁄2 inch to 10 inches. Danfoss-Flomatic, Card No. 16