 The Sigmund F.N.5 main pump has a capacity of per minute () on 4x4 versions).Normal fire hoses could be used either from the main pump, which had four outlets, or from normal fire hydrants for which an assortment of connecting branches were carried.In addition, the machines carried a small Coventry Climax ( per minute pump, with its own petrol engine, which could also draw water from a river or other source, again feeding normal fire hoses, and which provided a separate and self-contained fire fighting capability.