Welch DryFastTM PTFE oil-free 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, no more frequent and costly oil change. Constructed with solid PTFE heads, PTFE diaphragms, Kalrez valves and utilizing fluorinated plastics on all wetted surfaces, these economical DryFastTM vacuum pumps are perfect for tough lab applications.
AI is now the official dealer of Welch vacuum pumps. These pumps are made in USA with one year warranty from Welch.
Free three feet 3/8" (9.5mm) white premium food grade silicone vacuum tubing ($19.99 value) included.
- Advanced Vapor Management (AVM) for precise setting of vacuum level
- Vacuum to 2 torr (2.6 mbar, 0.266 kPa)
- Strips DMF fast
- Chemically resistant
- No oil changes, no cold trap required for water/alcohol solutions
- Virtually maintenance-free solution for laboratory environment
- Smaller footprint than oil pump saves lab space
- Designed to work with rotary evaporators
| Electrical requirements|| 220-240 Volts 50/60Hz single phase 1/5 HP, 150 watts|
| Application|| Rotary evaporation/distillation (low volatility solvents < 160oC B.P., ~2 liter), centrifugal|
concentrators, vacuum ovens (mid-size), pumping harsh vapors & gases.
| Pumping rate|| 1.2 cfm|
| Ult. vacuum pressure|| 2 torr / 2.7 mbar / 0.266 kPa|
| Maximum vacuum|| 29.85 in. Hg|
| Intake (vacuum connection)|| 3/8" (9.5mm) hose barb|
| Exhaust|| 1/4" (6.4mm) hose barb|
| Adjustable vac./gas ballast|| Yes|
| Pump dimensions (LxWxH)|| 350 x 170 x 220 mm|
| Shipping dimensions (LxWxH)|| 530 x 360 x 380 mm|
| Pump weight|| 10 kg|
| Shipping weight|| 11.5 kg|
| Certification|| CSA|
| Manual|| Click here to download|