Is it mandatory to use double headed hydrants in Fire Hydrant System ?, Is it specified anywhere in NFPA.
Not sure what you mean by double headed hydrants
Normally in a city, the city specifies what type of fire hydrant to be used.
If the city does not have authority, than the business owner would dictate the fire hydrant to be use.
One other factor would be the fire department that services the facility to see what they nee.
Double headed hydrants means Double outlet hydrants
I think he means a double steamer connection?
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