Simmons Hydrant LengthsThe Frost Proof Yard Hydrant provides running water for lawn and garden, livestock and fire protection all year, even in sub zero temperatures. The shut off valve operates below the frost line. Hydrant cannot freeze because when it is closed, all water in the standpipe drains out a hole in the valve which is set in the ground below the frost line. Hydrant spout operates at a convenient height (24 inches) from the ground level so that it can spill into