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Insulated Side View Illustration

Typical Dry Hydrant Frost Free Configuration:  In area's of  freezing climate and little ground cover as illustrated here it is also advisable to install Styrofoam SM below the surface horizontally around the riser pipe and over the pipe run all the way to the water's edge. It's also a good idea to spray the threads with a frost inhibitor after each use or water can collect and freeze at the base of the thread making it difficult to get a seal with the hard suction hose. We've heard of firefighters giving up on a hydrant thinking that it was frozen only to find out after the incident that there was just a little ice in the thread preventing an air tight seal against the gasket.