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LicenseMaintained pressure powder fire extinguisher
Science Museum Group
© The Board of Trustees of the Science Museum
Maintained pressure dry powder fire extinguisher
This type of fire extinguisher employs a dry powder extinguishant and is particularly suitable for dealing with fires on the surface of flammable liquids.
The powder is expelled, on depressing the handle, by a charge of compressed air at 150 lbs. per sq. in. It is charged by means of an air pump or from a compressed air line.
