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  • DOLPHIN LA 3809/5109 A, Liquid Ring Vacuum Pump , Busch Vacuum Solutions

DOLPHIN LA 3809/5109 A

Liquid ring

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
Chemical and pharmaceutical industries
  • Evaporation
  • Distillation
  • Filtration
  • Drying
Electric power generation
  • Condenser air extraction
  • Geothermal gas extraction
  • Flue gas desulphurization (FGD)
Food processing
  • Powder processing
  • Vacuum cooling
  • Meat marinators
  • Meat fillers
  • Freeze drying
  • Meat cutters
  • Pasteurizing
  • Sterilizing
  • Pneumatic conveying
  • Meat tumblers
Hospitals and healthcare facilities
  • Surgical vacuum draining
  • Anaesthetic gas scavenging
  • Medical suction
  • Vacuum-assisted closure (VAC)
Oil and gas industry
  • Mud drying
  • Petroleum refining
  • Crude oil fractional distillation
  • Mud transfer
  • Seawater deoxygenation
  • Triethylene glycol (TEG) regeneration
  • Crude oil distillation
  • Monoethylene glycol (MEG) regeneration
  • Water degassing
  • Vent gas recovery
  • Water pump priming
  • Seawater deaeration
  • Thermoforming packaging machines
  • Liquid packaging
  • Cartoning machines
  • Chamber packaging machines
  • Tray sealers
Plastics processing
  • Vacuum bagging
  • Extruder compounding
  • Material drying
  • Thermoforming
  • Pneumatic conveying
  • SSP recycling
  • Rasin transfer molding (RTM)
  • Vacuum calibration
  • Extruder profile
  • Injection molding
Steel degassing
  • Vacuum degassing
Vapor recovery
  • Storage tank filling
  • Volatile organic compounds (VOC) recovery
  • Storage tank venting
  • Vapor balancing
  • Railcar and truck loading
  • Impregnation
  • 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.