Horizontal multistage pumps suitable for mines, factories and urban drainage, used to transport clean water without solid particles or physical and chemical properties similar to water in liquid transport medium temperature of 0 ℃ ~ 80 ℃, allowing inlet pressure 0.6MPa. Horizontal multi-stage pump parameters: flow Q 10 ~ 500m3 / h Head H 33 ~ 850m horizontal multi-stage pump Model Description horizontal multistage model representation 1) D280-43 / 84 × 5 "D" - said the single-stage , more suction, segmental centrifugal pump. "280" - said the pump flow (m3 / h). "43" - said the single-stage pump head (m). "84" - indicates the year. "5" - said the series. 2) D80-30 × 5 "D" - said the single-stage, multi-suction, segmental centrifugal pump. "80" - said pump inlet diameter (mm). "30" - said the single-stage pump head (m). "5" - said the series. This approach represents the pump only D80-30. 3) 150D30 × 5 "150" - indicates the pump inlet diameter (mm). "D" - said the single-stage, multi-suction, segmental centrifugal pump. "30" - said the single-stage pump head (m). "5" - said the series. Horizontal multi-stage pump from the motor direction of rotation clockwise rotation to the pump. Horizontal multi-stage pump material of main parts: the pump flow components are made of cast iron, the shaft is made of 45 steel. Selective advantage of a multi-stage pumps, multistage centrifugal pump means there are two or more than two pump impeller, the maximum you can lift more than 125 meters; in the case of single-stage multi-stage centrifugal pump head needs to be equipped with two-stage motor , by increasing the number of impeller to be equipped with * motor, which can increase pump life and reduce unit noise, but the multi-stage centrifugal pump for single stage repair is relatively difficult point. 2, when the pump head is less than 125 meters to actual needs, according to the pump pumping station area, pump prices (multi-stage centrifugal pump prices are generally higher than those of single-stage), and other factors considered in the selection of multi-stage centrifugal pump. With advances in technology, the single-stage pump impeller can be improved by increasing the speed of the pump pump head can be replaced by a multi-stage centrifugal pumps, but the price is a little expensive. Multistage centrifugal pump maintenance and operations management Note: The pump should be divided into two aspects of electrical and machine, machine for respect, the main pump maintenance records of the previous tune out than what you know. The second is the power of respect, and to understand each pump motor power, his control systems have a certain understanding.