[Asia Pump Network News] Chemical pump with easy maintenance, high efficiency and high suction and so on. So in the purchase of chemical pump which should pay attention to? This is where consumers are puzzled today Xiaobian introduce you to chemical pump selection guide, I hope for your help! High-quality chemical pump where to buy chemical pump Selection Guide Selection of chemical pumps need to consider the following aspects: Corrosion resistance 1. Sulfuric acid as a strong corrosive medium is a very broad use of sulfuric acid is an important industrial raw materials. Different concentrations and temperatures of sulfuric acid on the corrosion of materials vary greatly for the concentration of 80 and above, the temperature is less than 80 ℃ thick carbon steel and cast iron has better corrosion resistance, but it is not suitable for high-speed flow of sulfuric acid is not suitable as a valve The material of ordinary stainless steel such as 3040Crl18Ni9,3160Cr18Ni12Mo2Ti sulfuric acid medium is also limited use. Therefore, the delivery of sulfuric acid pump valve is usually made of high silicon cast iron and difficult to process, high alloy stainless steel 20 alloy manufacturing. Fluoroplastic has good resistance to sulfuric acid Fluorine-lined pump F46 is a more economical choice. The company's products are applicable to fluoride plastic alloy pump series of fluorine plastic alloy magnetic pump CQBF fluorine alloy magnetic pump VYF fluoroplastic reinforced alloy submerged pump VFS fluoroplastic reinforced alloy centrifugal pump VFS fluoride alloy pump IHF fluoroplastic reinforced alloy centrifugal pump 2 Hydrochloric acid is not resistant to most of the metal materials, hydrochloric acid corrosion, including a variety of stainless steel containing molybdenum ferrosilicon can only be used for 50 ℃, hydrochloric acid below 30. Contrary to metallic materials, the vast majority of non-metallic materials have good corrosion resistance to hydrochloric acid. Therefore, lined with rubber pumps and plastic pumps such as polypropylene, fluoroplastic, etc. are the best choice for conveying hydrochloric acid. Fluorine plastic alloy pump series 3. Nitric acid Most of the metal is rapidly corroded in nitric acid to destroy stainless steel is the most widely used nitric acid resistant to all concentrations of nitric acid at room temperature have good corrosion resistance It is worth mentioning that the stainless steel such as 316, 316L corrosion of nitric acid Sex is not only inferior to ordinary stainless steel such as 304,321 sometimes even worse. For high temperature nitric acid is usually used titanium and titanium alloy materials and fluorine plastic alloy pump series applicable. 4. Acetic acid It is one of the most corrosive substances in organic acids. Ordinary steel will corrode in all concentrations and temperatures of acetic acid. Stainless steel is an excellent acid-resistant material. Molybdenum-containing 316 stainless steel is also suitable for high temperature and dilute acetic acid vapor . For high temperature and high concentration of acetic acid or other corrosive media and other East demanding use of high alloy stainless steel or fluorine plastic pump 5. Alkali sodium hydroxide is widely used in steel below 80 ℃, 30 concentrations of sodium hydroxide solution also has many factories in 100 ℃, 75 or less while still using ordinary steel corrosion increased economy but good. The corrosion resistance of ordinary stainless steel lye compared with cast iron has no obvious advantages as long as the medium allows a small amount of iron mixed with stainless steel recommended. For high temperature alkaline use of titanium and titanium alloy or high alloy stainless steel. General cast iron pump can be used at room temperature low concentration of alkali special requirements can be used when all kinds of stainless steel pump or fluorine plastic pump 6. Ammonia ammonia hydroxide most of the metal and nonmetal ammonia and ammonia ammonia hydroxide corrosion is only slight Copper and copper alloy should not be used. The company a lot of corrosion-resistant chemical pump applicable
