Check valve means relying on the flow of the medium itself automatically open and close the valve metering pumps, used to prevent media backflow valve, also known as non-return valve, check valve, reflux valve, and back pressure valve. Check valves are an automatic valve metering pump wholesale, its main role is to prevent the media back, to prevent the pump and drive motor reversal, and discharge the container medium. Check Valve (Check Valve): Nominal pressure or pressure level: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K nominal diameter or caliber: DN15 ~ 900, NPS 1/4 ~ 36 Connection: France Portland, welding, threaded, socket weld, folders, and other applicable temperature: -196 ℃ ~ 540 ℃ Body Material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M ( 316L), Ti. Different material selection, check valves (aetv One-way valve): can be separately applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Metering pumps (Metering pump), also known as proportional dosing pump or pumps. Metering pump is a rigorous process to meet the various needs of flow can be infinitely adjusted in the range of 0-100%, used to transport liquids (especially corrosive liquids) a special volume of the pump. Due to its outstanding metering pump it has now been widely used in various industrial fields power plants, water treatment, green plants, petrochemical, pharmaceutical, food and the like. Metering pump principle structure, Changzhou metering pump, Xiao source Machinery by Xiao source Machinery Co., Ltd. Changzhou City. Changzhou City, Xiao source Machinery Co., Ltd. (www.czxiaoyuan.com) (www.czxiaoyuan.com) strong, credible, in Changzhou, Jiangsu reciprocating pumps, metering pumps and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xiao source Machinery and you hand into the brilliant, for a better future!