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CO2/N2O Gas Cylinder Automatic Filling Machine

CO2/N2O Gas Cylinder Automatic Filling Machine

1 Set
Brand Name
1 Year
Wooden packaging box
Shipping Port
Place of Origin
Delivery Time
60 Days
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CO2/N2O Gas Cylinder Automatic Filling Machine

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This machine is designed to refill high-pressure liquefied gases into gas cylinders. CO2 and N2O are high-pressure liquefied gases. For safety reasons, a certain space must be reserved in gas cylinders to permit gas-liquid phase transition, therefore, both CO2 and N2O must be filled according to the specified weight, it is strictly prohibited to fill them according to gas cylinder's nominal working pressure, and overcharging is prohibited too. 

For this reason, this machine is equipped with an automatic weighing unit and dual safety protection mechanism. The filling process is automatically controlled by PLC module to ensure the safety and accuracy of the filling job.

Beyond that, the machine has the functions of automatic clamping and release gas cylinders, automatic tare, automatic filling, and automatic stop at preset weight.


  • Compatible with different specifications of CO2 /N2O cylinders

  • Dual safety protection mechanism to prevent overcharge and pressure overload

  • Touch screen equipped to preset gas fill weight easily

  • PLC module automatic control 

  • Digital pressure gauge equipped to set protection filling pressure

  • Automatic filling, stop when full

Technical Parameters

Applicable mediumCO2 / N2O
Control modePLC automatic control
Operation modeTouch screen
Gas cylinder fixing modeAutomatic clamped by pneumatic cylinder
Max gas filling pressure22.4 MPa
Gas filling weight range0-5Kg ( capacity 0.6L to 10L )
Driving air pressure0.3-0.8 MPa
Electric power supplyAC, 220V, 50/60Hz ( customizable )

Operation Panel

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Electric control box


Operation Steps

1.Connect air-compressor and CO2/N2O mother tank to machine. 

2.Power on machine, tune the driving air regulator to around 0.6MPa.

3.Preset a gas filling weight on Touch screen. 

(This machine has automatic tare function)


4.Preset gas filling protective pressure on Digital pressure gauge


The pressure value must be lower than the Nominal working pressure of your CO2/N2O cylinder. If you don't know, please check with your cylinder supplier.

5.Place empty CO2/N2O cylinder on filling-station

Press Start button, the machine clamps the cylinder automatically, then begin filling gas.

6.When the preset filling weight is reached, the machine will stop filling automatically, and buzzer on, then the filled cylinder will be released automatically, gas filling job done.


For 2 stations machine and 4 stations filling machine, each workstation has an independent control kit, which can proceed gas filling tasks at the same time.

Demo Video Link:

CO2/N2O cylinders automatic filling machine with 4 stations

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