The FreezeFlow Sanitary Roof Hydrant is the only frost-free hydrant on the market that not only does not require a drain to prevent freezing but does not require winterizing of any kind, the company says. The water is stored internally, below the roof line until needed. Mounting is very simple with a flange mount. Suitable for air plenums. The head is heavy duty cast iron with lockable handle. Backflow protection is achieved by double check and all rubber parts are serviceable without removal of the hydrant from the roof.
Hoeptner Perfected Products. www.freezeflow.com