Post type hydrants are special purpose hydrants for use where fire fighting is not the primary function. They are smaller in size than standard AWWA hydrants and are furnished with main valve opening diameter of 2 ½”.
They are most often used for wash down service at treatment plants. Other uses may be in water systems to flush, bleed air pockets or fill fire department tank trucks in non-emergency service. Although the 2 ¼” post type model is not recognized by AWWA C502 standards for dry barrel fire hydrants, they are nonetheless manufactured to the same strict quality of materials and workmanship as full size M&H hydrants. Rated working pressure is 150 psi and each hydrant is hydrostatically tested to 300 psi.