Diaphragm valves materials applicable temperature and medium
body lining materials applicable temperature and medium
| lining material(code) | applicable medium（℃） | applicable medium |
| NR | -10~+85 | Hydrochloric acid, 30% sulfuric acid, 50% hydrofluoric acid, 80% phosphoric acid, alkali, salts, metal solution, sodium hydroxide, potassium hydroxide, a neutral salt solution, 10% sodium hypochlorite, wet chlorine, ammonia, most of the alcohols and other organic acids and aldehydes. |
| BR | -10~+85 | Cement, clay, coal cinder ash, granular fertilizer and strong wear solid-state flow, various concentrations mucus, etc. |
| CR | -10~+85 | Animal and plant oils, lubricants and a great range of PH value changes corrosive mud, etc. |
| HR | -10~+120 | Organic acids, alkali hydroxide combined compounds, inorganic salts and inorganic acid, elemental gas alcohols, aldehydes, ethers, ketones, esters, etc. |
| FEP | ≤150 | In addition to molten alkali metals, elemental fluorine and aromatic classes hydrochloric acid, sulfuric acid, aqua regia, organic acids, strong oxidizing agents, strong acid alternately, and the alternating pH and various organic solvents, etc |
| PVDF | ≤100 | |
| ETFE | ≤120 | |
| PFA | ≤180 | |
| PCTFE | ≤120 | |
| enamel | ≤100 Avoid temperature abrupt changes |
In addition to hydrofluoric acid, strong phosphoric acid and strong alkali, other low-corrosive resistant medium |
| cast iron without lining | applicable temperature according to the diaphragm material | Non-corrosive media |
| stainless steel without lining | General corrosive media |
diaphragm materials applicable temperature and medium
| diaphragm material (code) | applicable temperature（℃） | applicable medium |
| CR | -10~+85 | Animal and plant oils, lubricants and corrosive mud with large change range of PH value, etc. |
| natural rubber（Q class） | -10~+100 | Inorganic salts, water purification, sewage, inorganic acid class |
| butyl rubber （B class） | -10~+120 | Organic acids, alkali hydroxide compounds, inorganic salts and inorganic acid, elemental gases, alcohols, aldehydes, ethers, ketones, esters, etc. |
| FPDM | ≤120 | In addition to salt water, 40% boron in water, 5% ~ 15% nitric acid and sodium hydroxide, etc.。 |
| NBR | -50~+150 | Water, oil, emissions and waste pollution, etc. |
| FEP | -50~+150 | hydrochloric acid, sulfuric acid, aqua regia, organic acids, strong oxidizing agents, strong alternately acid, and the alternating pH and various organic solvents in addition to molten alkali metals, elemental fluorine and aromatic classes |
| PFA | ≤180 | |
| FPM | -10~+150 | Medium corrosion resistance higher than other rubbers, suitable for inorganic acid, alkali, oil, synthetic lubricants and oxygen and so on. |
