AMI Membrane Contractor Degasifier Systems

AMI Membrane Contactor Degasifier

AMI membrane contactor degasifier systems use Liqui-Cel® microporous hollow fiber membranes to remove gases from liquids. During typical operation, liquid flows over the shellside (outside) of the hollow fibers while a vacuum is applied to the lumenside (inside) of the fibers. The dissolved gas is forced through the membrane pores and is carried away by the vacuum pump.

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Membrane Contactor Degasifier Systems Benefits

  • Modular design offers flexibility for meeting future capacity or tighter specification requirements
  • High inlet pressure and low pressure drop reduces the need for repressurization pumps
  • Maximized surface area/volume results in high performance and space efficiency
  • No chemical requirements make membrane contactor degasifier systems environmentally friendly and reduce chemical exposure to employees
  • Fast equilibrium means quick start-ups
  • Non-dispersive characteristics allow the system to be operated over a wide range of flow rates.
  • Simple operation means reduced instrumentation and maintenance costs.

AMI Membrane Contactor Degasifier Systems – Standard Equipment

  • Liqui-Cel® Membrane Contactors
  • Air Blower
  • Inlet Air Filter
  • Inlet Air Flow Meter
  • Air Flow Control Valve
  • Liquid Trap
  • Vacuum Relief Valve
  • In & Out Water Pressure Gauges
  • Water Pressure Relief Valve
  • In & Out Isolation Valves
  • Drain Valve

Ordering Information for Degasifier Systems

Model No.

System Capacity

Membrane Contactors

Line Size
(NPT, Inches)

System Dimensions (in/cm)

Approx. Shipping Weight (Lb/Kg)












8” × 20”





400 lbs





8” × 20”





450 lbs

All dimensions and weights are approximate.


  • System feed water must be pretreated down to 5 micron filtration level.  
  • Minimum and maximum feed flows as specified.
  • Systems rated at 77°F (25°C) using RO permeate water. System capacity changes with degasification requirements. For higher degas requirements, a water analysis must be supplied and could result in modifications to the system.
  • RO system is recommended for pretreatment. Contact us for additional details on your specific application.

Voltage/Ordering Information

Please add our voltage codes to the end of the model number when ordering.   Example: 1-116 = 110v, 1 ph, 60 hz.

Voltage Codes:

  • 116 = 110v, 1ph, 60hz
  • 216 = 220/230v, 1ph, 60hz
  • 215 = 220/230v, 1ph, 50hz

Three Phase Not Available

About Degasifiers with Liqui-Cel® Membrane Contactors

AMI water degasifier systems use Liqui-Cel membrane contactors, leading gas transfer devices that have been used in many industries around the world for over 20 years. Carbon dioxide removal and deoxygenation are among the common applications. Capable of achieving <1ppm CO2 and <1ppb O2, AMI Water Degasifiers using Liqui-Cel membrane contactors provide significant benefits to industrial processes by removing gases from liquids. For example, carbon dioxide and oxygen removal can reduce the impact of corrosion on boilers and piping to protect captial investments and reduce operating costs. Removing these gases can also improve process efficiency and prevent negative impacts on production yields related to dissolved gases. Because of their cleanliness and predictability, Water Degasifier systems using Liqui-Cel Membrane Contactors are the standard degassing technology installed in ultrapure water systems for the semiconductor, microelectronics and many other industries.

Although other degassing technologies, such as vacuum towers and forced draft dearators have existed for many years, these older methods are being rapidly replaced by degasification systems using Liqui-Cel Membrane Contactors due to the smaller footprint, lower installation costs and the modular nature of the membrane contactor system.

How Water Degasifier Membrane Contactors Work

AMI water degasifiers use Liqui-Cel Membrane Contactors with a microporous hollow fiber membrane to remove gases from liquids. The hollow fiber is knitted into an array and wrapped around a center tube inside of the contacter housing.

During typical operation, liquid flows over the shellside (outside) of the hollow fibers while a vacuum is applied to the lumenside (inside) of the fibers. Because the membrane is hydrophobic it acts as an inert support that allows direct contact between a gas and liquid phase without dispersion. Applying a higher pressure to the liquid stream relative to the gas stream creates the driving force for dissolved gas in the liquid to pass through the membrane pores. The gas is carried away by the vacuum pump.

Liqui-Cel® 8 x 20 Membrane Contactor Industrial Extra-Flow Product Data

Free CO2 Removal % and Pressure Drop

Membrane Contactor Degasifier System Uses:
  • Deoxygenation
  • Decarbonation
  • Carbonation
  • Nitrogenation
  • Hydrogenation
  • Debubbling
  • Hydrogen Sulfide Removal
  • VOC Removal
  • Osmotic Distillation
  • Liquid/Liquid Extraction
  • Humidification Gases
  • Dealcoholization
  • Ammonia Removal
  • Many More
Membrane Contactor Degasifier System Applications:
  • Semiconductor/Microelectronics
  • Boiler Feedwater
  • Power Generation
  • Flat Panel/TFT Displays
  • Food & Beverage
  • Pharmaceutical
  • Ink Jet Inks
  • Offshore injection water
  • Medical/Analytical
  • General Industrial
  • Solar Panels
  • Aquifier Storage
  • Photographic
  • Plating/Coatings
  • Eye Care Products
Optional Equipment:
  • pH Sensor (A225)
  • PLC Option (A350)
  • Flow Sensor/Transmitter (A153)
  • Crating

Give us a call today at 604-878-8092. Let’s discuss your unique application needs.

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