No leakage The type of pump leak-free pumps, including shielding pumps, magnetic pumps, positive displacement diaphragm pumps, electromagnetic pumps and so on. According to engineering practice, this article describes the non-leakage pump shielded pumps and magnetic pumps, commonly known as the shaft seal pump is widely used: chemical production of corrosive media transport, membrane caustic soda chloride water treatment project and Plus acid technology (currently most of the ion membrane caustic soda pump projects are used in our products), non-ferrous metal smelting electrolyte delivery, pickling car manufacturing process, and pharmaceutical, petroleum, electricity, electroplating, dyes, pesticides , Paper, food, textile and many other industries, long-term lose any concentration of sulfuric acid, hydrochloric acid, hydrofluoric acid, nitric acid, aqua regia, strong base, strong oxidant, organic solvent, reducing agent, etc. under the temperature of -20 ℃ ~ Strong corrosive medium