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  • DOLPHIN LA 1157–1807 A , Liquid Ring Vacuum Pump , Busch Vacuum Solutions

DOLPHIN LA 1157–1807 A

Liquid ring vacuum pumps

Reliable Vacuum for a Variety of Chemical Processes


Proven technology, durable single-stage construction


Extremely high vapor and particle tolerance


Wide range of construction materials, including cast iron (EN-GJL-200), many grades of stainless steel and even titanium, ATEX-certified version available (Cat 1(i)/2(o) IIC T5), different operating fluids possible, operation as compressor possible

Technical specifications

Markets & applications

Biogas handling
  • Circulation
Chemical and pharmaceutical industries
  • Filtration
  • Evaporation
  • Distillation
  • Drying
  • Solvent recovery
  • Pneumatic conveying
Electric power generation
  • Geothermal gas extraction
  • Waterbox priming
Oil and gas industry
  • Mud drying
  • Water pump priming
  • Water degassing
  • Mud transfer
  • Liquid packaging
Plastics processing
  • Dissolution
  • Pyrolysis
Vapor recovery
  • Railcar and truck loading
  • Storage tank venting
  • Storage tank filling
  • Vapor balancing
  • Volatile organic compounds (VOC) recovery
Wastewater treatment
  • Water priming
  • Ground water removal
  • Impregnation
  • Drying


  • Partial or total recirculation systems
  • Liquid separator
  • Cavitation protection
  • Heat exchanger
  • Gas ejector
  • Wide selection of motors
  • Non-return valves
  • Vacuum relief valves

Design options

  • ATEX - for use in explosion hazard areas.