Can an Oxygen Regulator Be Used for CO2?

Whether you own an aquarium, are a home brewer or a professional welder, for any cylinder of gas you use regulator is required. Regulators vary in design, materials and applications. When switching from oxygen to carbon dioxide, one regulator may be used under certain conditions.

  1. Pressure

    • Ensure that you use a cylinder of carbon dioxide that is the proper size for the regulator. Using too large a cylinder may break the regulator and cause a safety hazard, while using one too small may make readings on the gauges inaccurate.

    Adaptors

    • Oxygen regulators normally have a threaded inlet and outlet valve, while carbon dioxide regulators commonly use a nipple and bottle setup. In order to properly attach the regulator, install the proper adapter to the valves.

    Safety

    • Regulators that have contaminants or any damage done to the inner components are serious safety risks. Never use fuels with an oxygen regulator, as there is a risk of explosion when doing this. Some regulators may not be able to properly read or handle certain pressure, so care must be taken in deciding whether to use an adapter. For welding standards, you should check with your local welding association before converting a regulator.