Welch 2034B-01 Vacuum Pump


These dry vacuum pumps, designed to meet chemical duty laboratory needs, are ideal for rotary evaporation, concentrators, evaporators, vacuum ovens, filtration, degassing, and other chemical applications. Pumps feature built-in advanced vapor management (AVM) for precise control capability of the distillation of organic solvents and applications handling aggressive vapors and gases.

Pumps are constructed with solid PTFE heads, PTFE diaphragms, Kalrez® valves, and utilize fluorinated plastics on all wetted surfaces. Pumps feature flows to 70L/min and ultimate vacuum levels down to 2torr. No cold traps are needed to operate. These stand-alone vacuum pumps need very little maintenance, leading to low cost of ownership and improved productivity.

115V pumps are CSA certified. The 230V pumps are CE marked.

SKU: 4200036 Category:


Use Model 2034 for benchtop rotovap rotary evaporation up to 2 L of many solvents (35o evaporation for atmospheric B.P.solvents to 110o C), and other routine laboratory vacuum processes.

Common accessories not included:
Inlet / Exhaust Separator Jars, 1423B
Vacuum Hose #331030-5
Vacuum Hose Clamps PK-10 #305320
Pumping Speed 25 l/min
Max. Vacuum 9 torr
Oil Capacity NONE, OIL-FREE
Tubing Needed 3/8? ID inlet AND exhaust hose nozzles
Exhaust / Intake threads M14(1/8)
Pump RPM or Wattage 150W
Dimensions LxWxH 13.8×6.8×8.8?
Weight 21.25 lbs
Wiring 115V, 60 hz

Additional information

Weight 25 lbs
Dimensions 21 × 14 × 15 in
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