Haskel 420-2 Butane/Propane Extraction Pump

Haskel 420-2 Butane/Propane Extraction Pump image


Designed for supercritical extraction of essential botanical oils, like Cannabis

EXT-420-2 Specifications

  • Switchable between single and two-stage mode by turning a valve
  • Use single stage mode for most of the transfer - when the inlet pressure starts to drop - switch to two-stage mode to pull vacuum as your process requires
  • In single stage mode - the pump has identical performance to EXT420
  • Two stage mode allows the pump to draw vacuum down to 23-in. Hg

Features and Benefits

  • Safe for handling propane and butane (Vent port must be connected to an exhaust line that vents leaked gas outdoors)
  • Viton and PTFE seals
  • Stainless steel and aluminum wetted components
  • High butane transfer rates
  • No electrical components
  • Stall against load - start against load - or run dry
  • Requires compressed air to drive the pump - approximately 30 CFM at 100 psi (7 bar) to run the pump at maximum speed (about 60 cycles per minute)
  • Clean – No lubrication required in the gas section - Nothing is added to the gas


Proper operation of the Haskel EXT420 pumps will require the following additional equipment:

  • Compressed air source capable of providing
  • approximately 25 CFM of air at 90 psi (6.2 bar) or higher (Compressor must be located in an area away from the LPG gasses)
  • Compressed air filter filtering to 40 microns or better
  • Drive air pressure regulator
  • Drive air speed control valve - such as a gate valve or a globe valve (not a ball valve)


Haskel EXT-420 extraction pump brochure

EXT420-Brochure11.pdf | pdf | 2 MB | Last Changed: 17/01/2019 12:50pm