PP metering pumps are generally divided into diaphragm metering pumps and plunger metering pumps, mostly used in chemical, petroleum, pharmaceutical, mining, hydropower, atomic energy, paper, cement and food and other industrial sectors, is an important class of special pumps.

　　PP metering pumps are widely used in the water treatment industry, such as:

　　(1) industrial water treatment: cooling towers and boiler circulating water treatment to add scale inhibitors, anticorrosive agents;

　　(2) Industrial wastewater treatment: flocculation, oxidising agent, defoaming, PH adjustment;

　　(3) Power plant water treatment: boiler furnace water treatment, water treatment outside the furnace.

　　PP metering pump selection needs to be in accordance with the following steps:

　　First, determine the pressure:

　　Selected PP metering pump rated pressure should be slightly higher than the actual pressure required, generally 10 to 20% higher. Do not choose too high, too high a pressure will waste energy, increase equipment investment and operating costs.

　　Second, determine the flow rate:

　　Selected metering pump flow should be equal to or slightly greater than the required flow rate of the process. The use of metering pump flow range in the metering pump rated flow range of 30 to 100 per cent better, when the metering pump repeat reproduction accuracy is high. Taking into account the economic and practical, it is recommended that the actual flow of metering pumps need to choose the rated flow of metering pumps for 70 ~ 90%.

　　Third, to determine the pump head (hydraulic end) material:

　　Metering pump specifications to determine the specific model, and then according to the properties of the overflow medium to choose the material of the overflow part, this step is very important, if the choice is not appropriate, it will cause corrosion of the medium damage to the overflow parts or media leakage contamination of the system and so on. Serious cases may also cause major accidents.

　　Meibao pump industry is the manufacturer of metering pump, free of charge to provide model parameters, installation dimensions, samples, notes, working principle and other information and pictures. Welcome you to call us, Meibao pump industry wholeheartedly for your service.