An attack hydrant is a term used to describe a fire hydrant with flow and pressure suitable for fighting a fire at a commercial premises. In most cases it would be an internal hydrant on a commercial premises supplied from a permanent booster pump or a fire fighting appliance. Attack/feed is a new classification only applicable when hydrants are part of a system where they may be used by the fire brigade as attack or feed hydrants. Internal fire hydrants are attack fire hydrants Attack Fire Hydrant sign manufacture and shipped from Queensland, Australia