Rocker – Chemical Resistant Vacuum Pump (Chemker 411)

The wetted parts of the Chemker 411 and all products in this line are made of PTFE material that resists most corrosive gases. They are diaphragm controlled and require no lubricant, no periodic oil changes, and no maintenance; no oil contamination. Thanks to the vibration-proof design, the Chemker Series has the lowest noise level of any comparable pump. Each Chemker Series vacuum pump motor has a built-in thermal protection device that automatically shuts down the pump if it overheats and restarts it when it cools down.

Ideal for:

  • Solvent purification
  • Gel dryer
  • Rotary evaporator
  • Vacuum filtration
Rocker – Chemical Resistant Vacuum Pump (Chemker 411)

Key Features

  • High chemical resistance
    All wetted parts of Chemker series vacuum pump are made of PTFE material which can resist most of corrosive gases.
  • No air pollution, maintenance free
    Chemker series vacuum pumps are driven by Diaphragm, without the need of lubricant, regular oil changes and maintenance; with no oil pollution.
  • Quiet and low vibration
    Driven direct by motor with no additional belt-driven transmission; the quality vibration-proof assembly makes Chemker run at the lowest noise level among all other equivalent pumps.
  • Thermal protection device
    Every motor of Chemker series vacuum pumps has a built-in thermal protection device to shut off the pump automatically when overheated and then resume working when the temperature cools down.


Power Supply 110V/60Hz 220V/50Hz
Max.consumption/power 90 W
Max.current 1.2 A 0.5 A
Max.vacuum 10mbar
Max.flow rate 20 L/min 18 L/min
Motor rotation speed 1700 RPM 1450 RPM
Horsepower 1/6 HP
Noise level 52 dB
Hose barb ID8 (5/16 inch)
Net weight 7.4 Kg
Dimension (L*W*H) 26.2 x 23.6 x 19.3cm
Glass moisture trap Yes
Vacuum regulator Yes
 Thermal Protection Yes


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