This Amerex Purple K dry chemical, regulated pressure, wheeled fire extinguisher covers your large-scale fire protection needs. Designed for a one-man operation, this unit is easily transportable through doorways and over rough terrain. This extinguisher is designed for use on high-hazard Class B flammable liquids) and C (electrical) fires. It is ideal for use in industrial and commercial settings - like oil, gas, chemical, and utilities industries - where flammable liquids are stored. Regulated pressure extinguishers feature a nitrogen cylinder with a pressure regulator that allows for adequate pressure to assure a smooth, complete discharge of the dry chemical. Regulated pressure, wheeled extinguishers are less expensive to purchase, as well as easier and less costly to maintain and service. This 125 lb. wheeled unit has 16-inch semi-pneumatic rubber wheels, is fully charged, with the option to include an annual inspection tag.