Diaphragm Valves - Diaphragm Materials
Common diaphragm materials and their main properties when used 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 alkalies |
| 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 |
Related Topics
-
Piping Systems
Calculate dimensions of pipes and tubes. Pressure drop calculations and head loss charts. Use of different piping materials. Insulation of pipes and tubes and heat loss diagrams.
Related Documents
-
Straight Through Diaphragm Valves - Flow Coefficients
Flow coefficients - Cv - and flow factors - Kv - for straight through diaphragm valves. -
Valve Selection Guide
Applications guide for selecting valves. -
Valves - Specific Services
In case of a specific service - the choose of a valve may be simplified by following an established practice. -
Weir Diaphragm Valves - Flow Coefficients and Flow Factors
Typical flow coefficients - Cv - and flow factors - Kv - for weir diaphragm valves.
