This Dual Diapgram pump manufactured by KNF Neuberger with a custom vacuum controll package. This simple controllerdesign provides the user the ability to set the vacuum level with a needle valve.
The readout guage units of measurement is in mbar, which is ideal for Rotavap or Rotavapor users. The pump has a flowrate of 20 liters per min. The vacuum depth is 7.9 mbar.