Safe substitute for the jet water pump

This device is an adjustable vacuum unit. The vacuum will be generated from the built-in full-teflon solvent resistant membrane pump. If using a VAN DER HEIJDEN-AQUASTOP® the jet water pump is no longer needed andthis reduces the water consumption to zero. The optimal vacuum can be adjusted with this regulation unit.

The picture shows two AQUASTOP®, the device on the left has an analogue display and on the right shows the vacuum digitally.


  • Adjustable vacuum
  • No water consumption
  • No water and waste water costs
  • Nearly 100% solvent recovery
  • 100% oil-free
  • Suitable for continuous operation
  • Maintenance free
  • Corrosion resistant
  • Can be used in combination with chillers
  • Ideal for solvent recovery by rotary evaporators. No solvents in the waste water

Technical Data

Technical Data AQUASTOP® II analog
Suction 25 l/min.
Vacuum 10 mbar
Pump head PTFE
Valves Kalrez
Membranes PTFE
Current type 230 V/50 Hz/150 W
Meter scale 1200 to 0 bar, analog
Vacuum regulator needle valve type
Cable length 150 cm
Dimensions (W x D x H) 250 x 350 x 240 mm
Colour RAL 7035/5001

You have questions? - Order information about AQUASTOP® analog und digital