Diaphragm Materials in Diaphragm Valves

Typical diaphragm materials and their main properties for use in diaphragm valves

Material Size Temperature Applications
inches mm oF oC
Butyl rubber 0.6 - 14 15 - 350 - 22 to 134 - 30 to 90 Acids and alkalis
Nitril rubber 0.6 - 14 15 - 350 14 to 134 -10 to 90 Oils, fats and fuels
Neoprene 0.6 - 14 15 - 350 - 4 to 134 - 20 to 90 Oils, greases, air and radioactive fluids
Natural/synthetic rubber 0.6 - 14 15 - 350 - 40 to 134 - 40 to 90 Abrasives, brewing and dilute mineral acids
White natural rubber 0.6 - 5 15 - 125 - 31 to 134 - 35 to 90 Foods and pharmaceuticals
White butyl 0.6 - 6 15 - 150 - 22 to 212 - 30 to 100 Natural color, food, plastics and pharmaceuticals
Viton 0.6 - 14 15 - 350 41 to 284 5 to 140 Hydrocarbon acids, sulphture and chlorine applications
Hypalon 0.6 - 14 15 - 350 32 to 134 0 to 90 Acid and ozone resistant
Butyl rubber 0.6 - 14 15 - 350 - 4 to 248 - 20 to 120 Hot water and intermittent steam services, sugar refining

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