Selection of diaphragm material for diaphragm nitrogen compressors
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How to choose the diaphragm material for a diaphragmatic nitrogen compressor? The diaphragm thickness of the diaphragm-type nitrogen compressors currently in use is 0.5 mm. What is the basis for choosing this thickness?
Selection of diaphragm material for diaphragm valves. Keywords: diaphragm valve diaphragm, rubber diaphragm for diaphragm valves, nitrile rubber diaphragm for diaphragm valves, silicone diaphragm for diaphragm valves. There are many materials available for the diaphragms in diaphragm valves, and the choice should be based on factors such as the medium, temperature, level of corrosion, and cost considerations； Diaphragm material (code) Operating temperature °C Applicable media Butyl rubber (Grade B) J –40~100 Good resistance to acids and alkalis (85% sulfuric acid, hydrochloric acid, hydrofluoric acid, phosphoric acid, caustic alkali, and various esters) Natural rubber (Grade Q) –50~100 Purified water, inorganic salts, diluted inorganic acids, etc. Perfluoroethylene propylene (FEP or F46) ≤150 Various concentrations of sulfuric acid, hydrofluoric acid, aqua regia, high-temperature concentrated acids, various organic acids, as well as strong alkalis, strong oxidizing agents, alternating between concentrated and dilute acids, alternating between acids and alkalis, and various organic solvents – highly corrosive media Soluble polytetrafluoroethylene (PFA) ≤180
Currently, the material produced in China is of type 00Cr15Ni5; the minimum thickness of such diaphragms is 0.5 mm. Diaphragms with a thickness of less than 0.5 mm cannot be produced at present.
What is the processing technique for diaphragms, and is heat treatment required? ? Such as HOFER’s three-layer diaphragm. 1.4310 (EN10088-2) is used
Tongxin diaphragms are perfectly suited for all diaphragm compressors around the world