The Welch 2067 is a full chemical-resistant, 8-head, single stage, oil-free dry diaphragm vacuum pump with all-PTFE contact surfaces and a very high flow rate. Oil-Free, portable, full chemical-resistant, means less maintenance and no more frequent and costly oil change, or cross contamination. 7.8 cfm high capacity dry diaphragm vacuum pump with PTFE contact surfaces.
The ideal oil-free vacuum pump for extra large size vacuum ovens (≥20 ft³), single buchner filters greater than 24" in diameter (or equivalent number of smaller sized funnels), and 50L or larger rotary evaporators (must use foreline or vacuum trap with vacuum oven if materials contain terpenes)
Vacuum depth and level is not regulated so it recommended to use this pump with a control system such as vacuum manifold with bleed valve or automatic vacuum controller found here.
These pumps are made in Germany with one year warranty and technical support from Welch Vacuum. Purchase of this pump is subject to End Use verification. A Certification form will be sent to you.
| Electrical requirements
||110V or 220V 50/60Hz single phase 0.53 HP, 370/440 watts|
| Free Air Displacement @60Hz
|| 222 LPM, 7.8 cfm
| Ultimate vacuum level
|| 56 torr / 75 mbar
|Adjustable vac./gas ballast||optional|
| Pump dimensions (LxWxH)
|| 21.3 x 6.5 x 11.8 inches
| Pump weight
|| 72 Lb
||UL, CSA, CE|