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Liquid controls M series

Liquid Controls M-Series™ rotary motion positive displacement (PD) meters offer the ultimate in measurement accuracy for custody transfer of petroleum products, aviation fuels, LPG, and a broad range of industrial liquids

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Product features

  • Low pressure drop.
  • Sustained accuracy—no wear from metal-to-metal contact inside the measuring chamber
  • Wide temperature range—products can be metered accurately from -40° F (-40° C) to 160° F (71°C).
  • Nominal flow coverage from 22 to 3,024 l/min → supports applications from delivery vehicles to bulk terminals
  • Standard published pressure up to 10.3 bar → supports a broad range of fuel and industrial-liquid systems
  • Published temperature range from -40 to 71 °C → provides flexibility across cold and warm liquid-transfer duties
  • Repeatability of 0.02% or better under stable conditions → supports consistent commercial measurement
  • Multiple body and internal material options → allows configuration to suit different compatible liquids
  • Mechanical or electronic registration options → supports integration with existing and modern metering systems
  • Serviceable bearings, seals and accessories → supports maintenance planning and long equipment life

Product description

LC meters incorporate a unique design, presenting minimal intrusion in a flowing stream of liquid, as well as minimal pressure drop through the meter. The LC meter consists of a housing in which three synchronized rotors turn with no metal-to-metal contact. Hydraulic sealing is accomplished by a stationary boundary layer of liquid, not by the wiping action of mechanical parts


Liquid Controls M meters are used for accurate volumetric measurement of fuels and compatible industrial liquids. Typical applications include truck delivery, aviation fueling, terminal loading and bulk transfer. AxFlow can help select the correct meter class and size for the actual medium and flow range.
The M range uses a tri-rotor positive displacement measuring chamber with three synchronized rotors. The rotors operate without metal-to-metal contact and displace known liquid volumes as they turn. This principle supports stable measurement with low internal wear.
Current portfolio data lists M-Series nominal flow ranges from 22 to 3,024 l/min depending on model. The standard range table lists maximum pressure of 10.3 bar. Exact limits must be confirmed for the selected model, product class, connection and liquid.
Liquid Controls documents M-Series applications for refined fuels, aviation fuels, solvents, oils and a broad range of industrial liquids. Material and seal selection must match the chemical and physical properties of the medium. AxFlow can support application review before final selection.
AxFlow can support model identification, service planning and spare-parts selection for Liquid Controls meters. Bearings, seals, registers and other service components should be matched to the exact meter configuration. Contact AxFlow with the model and application data to confirm the correct service solution.
UAB AxFlow