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Liquid Ring Vacuum Pumps - KPH (NA Design)


Liquid ring compressors of the series KPH are one to multi-stage displacement compressors of simple and robust construction.


  • General Industry
  • Chemicals
  • Oil & Gas
  • Power

industry sectors

  • Pulp & Paper
  • Steel & Primary Metals
  • Other Industries
  • Basic (Organic & Inorganic)
  • Specialty (Fine & Consumer)
  • Biofuels
  • Pharmaceutical
  • Midstream Transportation
  • Downstream Processing
  • Conventional Steam
  • API 681
  • NACE MR0175 / MR0103
  • NDT acc. ASME
Operating Parameters
  • Flows to 3400 m³/h (2000 CFM) 
  • Pressures to 12 barg (174 psig)
  • Temperatures to 100°C (212 °F)
  • Hydraulic overpressure test 22,5 barg (326 psig)
  • Service liquid max. admissible temperature 80°C (183 °F)
Design Range

Size Range: From 2" to 8"

Features & Benefits
  • Pumping of nearly all gases and vapours
  • Non polluting due to a nearly isothermal compression
  • Oil-free, as no lubrication in the working chamber
  • Additional liquid can be handled with the gas flow
  • Easy maintenance and reliable operation
  • Low noise and nearly free from vibration
  • Wide choice of material, therefore applicable nearly anywhere
  • Incorporated central drain
  • No metallic contact of the rotating parts
  • Full API 681 compliance
  • Single or multi-stage design
  • Cast Iron or 316 SS materials
  • Special materials are available on request


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