Germany KSB Co., Ltd. new N series filter pump, which is the company's newly developed circulating pump dedicated to the swimming pool filter. KSB's new N series self-priming coupling filtration pumps allow water circulation in a swimming pool to reach 36 cubic meters per hour and up to 21 meters. N series filter pump shaft is not directly connected with the liquid, the impeller will be completely wrapped around the shaft, and is directly fixed to the shaft, rather than in the past by the impeller screwed outside, it is easy to cause corrosion, It is also very easy to cause the impeller loose. The new shaft material of KSB's new N-series filter pump, thanks to its strong electromagnetic properties, effectively reduces the energy input of the low-noise motor by 15% compared to previous product families. Due to the new design of the product diffuser, the water pressure efficiency is effectively enhanced and the energy consumption is further reduced. The filter unit of KSB N series filter pump has about 1330 cm3 with built-in folding handle. The pump is made of corrosion-resistant plastic with 2 threaded plugs to eliminate the risk of freezing the water.