| Valve Type ID | c9f50c29-20ed-463d-aeb1-9f454d20ac8f |
|---|---|
| Size Range | DN25-DN200 |
| Pressure Rating | PN6.4-PN12.8 |
| Temperature Range | -60°C to 800°C |
| Body Material | cast iron |
| Trim Material | alloy steel |
| Seal Material | graphite |
| Stem Material | alloy steel |
| End Connection | ferrule |
| Standard | HG |
| Operation Method | electric |
| Flow Coefficient (Cv) | 980.04 |
| Leak Rate | ANSI Class IV |
| Applicable Media | steam |
| Applications | steam |
| Industry Tags | municipal |
| Test Pressure | 216 |
| Design Pressure | 12.8 |
| Design Standard | HG |
| Design Temperature | 800 |
| Body Material Grade | LCA |
| Weight (kg) | 784 |
Diaphragm valves use a flexible diaphragm to isolate the flow path from the actuator, making them well suited to corrosive, abrasive, or high-purity (e.g., pharmaceutical, biotech) services. Selection considers diaphragm material (PTFE, EPDM, etc.), body lining, and weir vs. straight-through pattern.
Q: What is a diaphragm valve used for?
A: Diaphragm valves are used for corrosive, abrasive, or hygienic services where the process fluid must not contact the actuator mechanism.
Q: What diaphragm materials are common?
A: Common diaphragm materials include PTFE, EPDM, and butyl, selected for chemical compatibility with the process fluid.
Guidance reflects general engineering practice for diaphragm valves; confirm against the project specification and applicable standards before procurement.
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