Welch 2047 2.5 cfm DryFast 2-Head Diaphragm Chemical Duty Pump
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Manufacturer: Welch Pumps
Welch DryFast PTFE Diaphragm Vacuum Pumps enable precise vacuum control for organic evaporations with exclusive Advanced Vapor Management (AVM). Oil-Free, portable, chemical resistant, 2 head diaphragm design simplifies maintenance. Choose from seven dry PTFE vacuum pump models with flows up to 70 L / min and adjustable vacuum down to 2 Torr. Economical DryFastTM vacuum pumps are perfect for tough lab applications.
Free three feet 3/8" white premium food grade silicone vacuum tubing included.
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The Welch 2047 is the high-flow member of the DryFast family. At 2.5 cfm (70 L/min) it moves more air than any other two-head DryFast model, which makes it a strong choice for vacuum filtration and for small vacuum networks feeding several nozzles at once.
Its vacuum stops at about 35 Torr, so it suits filtration, degassing and drying rather than deep-vacuum evaporation of high-boiling solvents. For those, look at the 2 Torr DryFast Ultra models.
Like the rest of the DryFast line, it is built for chemical duty with solid PTFE heads, PTFE diaphragms, Kalrez valves and fluorinated plastic wetted surfaces. It runs oil-free, needs no cold trap for protection and has a front control knob for setting vacuum.
| Electrical requirements | 110V or 230V, 50/60Hz single phase |
| Application | Vacuum filtration |
| Pumping rate | 2.5 cfm |
| Ult. vacuum pressure | 35 torr |
| Maximum vacuum | 28.5 in. Hg |
| Vacuum connection | 3/8" hose barb |
| Adjustable vac./gas ballast | Yes |
| Pump dimensions (LxWxH) | 13.8 x 6.8 x 8.8" |
| Shipping dimensions (LxWxH) | 21 x 14 x 15" |
| Pump weight | 21.25 Lb |
| Shipping weight | 25 Lb |
| Certification | UL, CSA, CE |
| Warranty | One year |
| Downloads | Users manual, product brochure |
Standard Package
| Welch 2047 chemical-resistant oil-free diaphragm pump | 1 pc |
| White premium food grade silicone vacuum hose | 3 ft |
| Power Cord with Plug | 1 pc |
| User's manual | 1 pc |
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