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Pneumatic diaphragm pump is a new type of conveying machinery, the use of compressed air as a power source, you can suck a variety of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable, highly toxic liquid , Plays an important role in industrial production. However, many users are still skeptical about the high temperature resistance of the diaphragm pump. The problem that the diaphragm pump is resistant to high temperatures is mainly related to the diaphragm of the diaphragm pump, and the high temperature resistance of the diaphragm pump mainly depends on the material, Understand the material's high temperature, all problems will be solved. Pneumatic diaphragm pump is resistant to high temperature Pneumatic diaphragm material mainly fluorine rubber, Hill Road rubber, polyether rubber, EPDM rubber, PTFE several, the following specific analysis for each pneumatic diaphragm pump material resistance High temperature level. 1, the pump material If the use of polypropylene (PP) material, made of PP material made of pneumatic diaphragm pump can resist the medium corrosive, better chemical resistance, lower cost, versatility is better, the main polypropylene material Particularly adapted to the ordinary acid-base liquid, made of polypropylene plastic pneumatic diaphragm pump can only be up to 65 degrees, the temperature exceeds this value will be deformed polypropylene plastic. 2, the pump body made of polyvinylidene fluoride (PVDF) material, this series of pneumatic diaphragm pump is a fluorine plastic pneumatic diaphragm pump, also known as corrosion-resistant pneumatic diaphragm pump products, contact with liquid diaphragm are made of PTFE material, the use of PVDF material made of pneumatic diaphragm pump is mainly adapted to strong corrosive, acid and alkali, mainly to adapt to the transport of multiple solvent-containing chemical liquids, particularly good corrosion resistance. The series of fluorine plastic pneumatic diaphragm pump maximum temperature of 93.3 degrees or less. 3, POM pump body material also has good solvent resistance and abrasion resistance, lower frictional resistance, hygroscopicity is also low, the maximum temperature of such pump body within 65.5 degrees. Teflon (PTFE) diaphragm corrosion resistance is very good, in addition to lithium metal lithium, potassium, sodium, chlorine trifluoride, high temperature trifluoride oxygen, high flow rate of liquid fluorine, almost all chemical delivery Liquids, which also contain concentrated nitric acid and aqua regia, can withstand temperatures up to 176.6 degrees Celsius but are recommended for use in diaphragm pumps because the diaphragm reciprocates back and forth within 120 degrees, provided that the pump Body must be made of metal material made of pump body. The plastic material of the pump body is PVDF material of the pump body temperature up to 93.3 degrees. 4, Viton diaphragm corrosion resistance is also ideal, usually can be used in the transport of various types of acidic media (including the concentration of oxidizing acid), alkaline liquids, salt media, oil media, hydrocarbon media . Viton temperature maximum temperature of 176.6 degrees, but the price of fluorine rubber diaphragm is higher, if the conveying medium has a corrosive temperature of 80 degrees or less, we recommend the use of PTFE diaphragm Teflon-lined rubber diaphragm selection General Ding qing rubber diaphragm can, if the transfer of liquid higher than 80 degrees in less than 120 degrees, we recommend contact with the liquid membrane PTFE membrane selection inside the lining of the rubber diaphragm selection of fluorine rubber diaphragm is best choice. 5, Hill Road rubber diaphragm material has good wear resistance, but also has corrosion resistance and heat resistance, suitable for use with the general acid-base liquid, can not transport liquid containing solvent, can replace the EPDM rubber material , Hill Road, the maximum temperature of the rubber diaphragm to 104 degrees, we recommend the use of less than 80 degrees. 6, polyether rubber diaphragm also has good wear resistance, mainly adapted to the oil liquid, can replace the rubber diaphragm qing, resistance temperature is about 100 degrees, it is recommended to use within 80 degrees. 7, EPDM rubber diaphragm also wear-resistant anti-aging, but also resistant to ozone and ordinary acid-base liquid, the maximum temperature of 120 degrees, it is recommended to use within 100 degrees. 8, Ding qing Rubber diaphragm is the most common kind of rubber diaphragm, mainly suitable for conveying all kinds of non-corrosive liquids, can also be used for oil media, the maximum temperature 100 degrees, it is recommended within 80 degrees of the media use. In summary, we can draw the pneumatic diaphragm pump can withstand high temperature is the answer is 120 degrees, the pump body must be made of metal pump body, the outer layer of PTFE membrane material using fluorine rubber material or three Yuan ethylene-propylene material to withstand the fluid within 120 degrees, I hope the above information on your understanding and learning to provide some help. Extended reading: "Industry Leader" magazine This article belongs to Industrial Internet (Xiamen) Technology Co., Ltd. All are welcome to reprint, please indicate the author and source. Author: Asian pumps Network Editor: April (QQ / micro letter:) starting: http: //beng.liuti.cn/ (service hotline:)