Prier C-734 Heavy Commercial Hot & Cold Mixing Hydrant provides a year round source of tempered water to areas of structures that are subject to freezing temperatures. The hydrant valve is connected to the supply piping in the heated portion of the structure, eliminating the possibility of freezing. The Hydrant is available with a self-draining vacuum breaker & backflow check valve (Prier Model C-754) to protect against any cross contamination possibilities. Common applications include garbage can wash stations at restaurants & service station baywashers. A removable operating key is provided to prevent unauthorized usage of the hydrant. No special installation tools are required.