Graphic Symbols in Vacuum Technology DIN28401
(Click on symbol for large copy)
| Chambers | |||||
|---|---|---|---|---|---|
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Vacuum chamber |
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Vacuum bell jar | ||
| Isolation Devices | |||||
|---|---|---|---|---|---|
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Shut-off device, general |
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Right-angle stop cock |
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Isolating valve |
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Gate valve | ||
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Right angle valve |
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Butterfly valve | ||
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Stop cock |
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Non-return valve | ||
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Three way stop cock |
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Safety shut-off device |
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| Valve Mode of Operation | |||||
|---|---|---|---|---|---|
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Manual operation |
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Hydraulic or pneumatic operation |
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Variable leak valve |
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Electric motor operation | ||
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Electromagnetic operation |
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Weight-operated | ||
| Connections and Tubes | |||||
|---|---|---|---|---|---|
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Flange connection, general |
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Change in the cross section of a duct |
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Bolted flange connection |
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Intersection of two ducts with connection |
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Small flange connection |
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Crossover of two ducts without connection |
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Clamped flange connection |
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Electric current feedthrough |
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Threaded tube connection |
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Flexible connection (e.g. bellows, flexible tubing) |
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Ball-and-socket joint |
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Linear motion feedthrough, flange-mounted |
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Spigot-and-socket joint |
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Linear motion feedthrough, without flange |
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Connection by taper ground joint |
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Feedthrough for transmission of rotary and linear motion |
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Branch-off point |
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Rotary transmission feedthrough |
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Collection of ducts | ||||
| Vacuum Gauges | |||||
|---|---|---|---|---|---|
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General symbol for vacuum |
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Vacuum gauge control unit with dial indicator |
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Vacuum measurement, gauge head |
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Vacuum gauge control unit with digital indicator |
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Vacuum gauge, gauge control unit |
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Measurement of throughput |
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Vacuum gauge, control unit recording |
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