The N 51/1 KPS, with its 50 litres container volume, is ideal for tough, professional use. The integrated pump with a flow volume of up to 14,000 litres per hour can be directly attached to the vacuum’s power socket. A filter net prevents leaves, wood, and smaller objects from entering the container and prevents blockages. The filter net can be conveniently emptied via the robust zipper. Wastewater is continually drained from the container through the provided 10 m wastewater hose. The C-pipe connection of the wastewater hose is a standardized size that also fits fire department and technical emergency service (THW) hoses. The N 51/1 KPS can also be used as a normal vacuum cleaner and achieves a suction power of 230 mbar.