译文：
1、使所选泵的型式和性能符合装置流量、扬程、压力、温度、汽蚀余量、吸程等工艺参数的要求
2、必须满足介质特性的要求
对输送易燃、易爆有毒或贵重介质的泵，要求轴封可靠或采用无泄漏泵，如磁力驱动泵（无轴封，采用隔离式磁力间接驱动）; 对输送腐蚀性介质的泵，要求对流部件采用耐腐蚀性材料，如氟塑料耐腐蚀泵 ; 对输送含固体颗粒介质的泵，要求对流部件采用耐磨材料，必要时轴封用采用清洁液体冲洗。
3、机械方面要求可靠性高、噪声低、振动小。
4、正确计算泵采购的投入成本
5、输送强腐蚀性介质（如“浓硫酸、浓硝酸”）时、输送易燃易爆介质时、使用环境不得有任何污染时 ：可选用磁力泵，如“CQB系列磁力泵、IMD系列磁力泵，如需自吸，可选用FZB氟塑料自吸泵
6、IHF离心泵及FSB离心泵具有转速高、体积小、重量轻、效率高、流量大、结构简单、输液无脉动、性能平稳、容易操作和维修方便等特点，如使用工况无特殊要求时，可选用离心泵较好。
7、输送含固体颗粒化学介质的泵，要求对流部件采用耐磨材料时：UHB砂浆泵为{zj0}选用对象，UHB耐腐耐磨砂浆泵材料为高强度新型工程塑料UHBWPE，它是一种改性的超高分子量（500万以上）聚乙烯。在塑料中，它具有优异的耐磨性，实验对比，它的耐磨性能远远高于不锈钢，且耐冲击、抗蠕变性和{jj0}的耐腐蚀性（与F4相当），还有无粘附性等独特性能。
8、当介质液面在泵安装位置的下方时：应选用FZB氟塑料自吸泵，如还需满足磁力泵的特性，可选用ZMD氟塑料自吸式磁力泵

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原文：
1, so that the selected pump type and performance in line with unit flow, lift, pressure, temperature, NPSH, suction process parameters, such as the requirements of
2, must meet the requirements of dielectric properties For transportation of flammable, explosive toxic or precious media pumps require a reliable seal with no leakage or pump, such as the magnetic force driving pump (no seal, using isolated magnetic indirect drive) Corrosive medium on the transmission pump, required use of anti-corrosive materials convection components, such as fluorine plastic corrosion resistant pumps Medium for conveying solid particles containing the pump, requested use of wear-resistant materials, convection parts, if necessary, seal with the adoption of cleaner liquid wash.
3, mechanical demands high reliability, low noise, little vibration.
4, the correct calculation of the input pump purchase cost of
5, conveying strong corrosive media (such as "concentrated sulfuric acid, concentrated nitric acid"), the transport flammable and explosive media, the use of the environment without any pollution: You can use magnetic pump, such as the "CQB Series Magnetic Pump, IMD series of magnetic pump, For self-priming, can choose FZB fluorine plastic self-priming pump
6, IHF centrifugal pumps and centrifugal pumps with a high speed FSB, small size, light weight, high efficiency, traffic flow, simple structure, transfusion-free pulse, performance, smooth, easy operation and maintenance of convenience features, such as the use condition is no special requirement may make use of centrifugal pumps better.
7, transmission media containing solid particles chemical pumps, require use of wear-resistant material convective components: UHB mortar pump is the best choice of the object, UHB decay wear-resistant material for high-strength mortar pump new engineering plastics UHBWPE, it is a change of ultra-high molecular weight (500 million or more) polyethylene. In plastic, it has excellent abrasion resistance, experimental contrast, its wear resistance is much higher than stainless steel, and impact resistance, creep resistance and excellent corrosion resistance (with F4 equivalent), as well as non-viscous By-laws, etc. unique properties.
8, when the medium surface in the pump when the bottom of the installation position: should use FZB fluorine plastics self-priming pump, such as the need to meet the magnetic characteristics of the pump may make use of ZMD fluorine plastics self-priming magnetic pumps