The Welch 2047B-01 DryFast Ultra diaphragm vacuum pump is engineered for mid-range vacuum applications requiring chemical resistance and consistent performance. Ideal for rotary evaporation, vacuum ovens (up to 4.5 ft³), and filtration setups with up to six funnels, it combines high flow rate with oil-free, low-maintenance operation.
Key Features:
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Flow Rate: Up to 70 L/min
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Vacuum Range: 2 to 79 Torr
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Voltage: 115V, 60Hz
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Quiet, compact, and portable design
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PTFE and fluorinated contact surfaces for chemical resistance
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Advanced Vapor Management knob for precise vacuum control
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2-head diaphragm system for strong performance and durability
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¼ in. ID tubing connection
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Certifications: CSA, CE marked
Ideal Applications:
| Application | Recommended Model |
|---|---|
| Rotary Evaporation (≤40 °C B.P.) | 2032B-01, 2042B-01 |
| Rotary Evaporation (≤100 °C B.P.) | 2034B-01, 2044B-01 |
| Vacuum Filtration (up to 6 funnels) | 2037B-01, 2047B-01 |
| Vacuum Ovens (up to 4.5 ft³) | 2047B-01 |
Specifications
| 0.2 hp | |
| 11.3 kg | |
| CE, CSA | |
| PTFE (Pump Head), Perfluoroelastomer | |
| 21.25 lb. | |
| 60 Hz | |
| 22.3 cm | |
| 35.2 cm | |
| 70 L/min. | |
| 70 torr |
| 25 lb. | |
| Pump, 6 ft powercord and plug (115V US standard) | |
| 115 V 60 Hz | |
| 2047 | |
| 9.6 kg | |
| 8.8 in. | |
| 13.8 in. | |
| 6.8 in. | |
| Filtration manifolds, lab automation | |
| 115 V |