Special High-performance pump vacuum with an extremely high flow volume. Wet & Dry vacuum cleaners. Pumping out water after floods or water main breaks, washing flat roofs, pond or pool sanitation, and other cleaning duties. The N 51/1 KPS, with its 50 litre 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.