A fire hydrant of the "dry" barrel type having an improved means of draining the barrel after the hydrant has been used. The hydrant is provided with a drain passageway communicating the interior of the hydrant barrel to the exterior. A diffuser is attached to the hydrant at the drain passageway and receives water therefrom. The diffuser eliminates the need for force flushing the drain passageway and the localized draining of the hydrant barrel, thus eliminating soil erosion in the vicinity of the hydrant. Furthermore, the diffuser protects the interior components of the hydrant from entrance of foreign matter.