CO2 Double Stage Pressure Reducer

Pressure reducers for CO2 cylinders are necessary to reduce the pressure inside the cylinder (around 50-60 bar) to the considerably lower working pressure of 1 - 2,2 bar. The pressure gauge gives the cylinder pressure and indicates how much CO2 is still left in the cylinder. The pressure gauge for the working pressure (if available) indicates the pressure to which the cylinder pressure is reduced. With the needle valve you can adjust the amount of CO2 that is given off, i. e. the number of gas bubbles that are injected into your aquarium. All AQUA-NOA Double Stage Pressure Reducers are equipped with a standard 4/6 mm CO2 hose connection. The thread for returnable bottles fits all standard CO2 reusable bottles in trade.

Please note
If you use a solenoid valve that is not directly mounted on the pressure reducer, you need to use a pressure hose that is CO2-tight. We recommend using this type of hose for the entire connection, but at least to the check valve in order to reduce CO2 losses. In order to connect the check valve with the diffusor you can use a flexible, transparent silicone hose for CO2.

Differences between Double Stage and regular CO2 Pressure Regulator

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