Which type of fittings is acceptable for high pressure CO2 systems?

In high-pressure CO2 systems, the use of Class 300 malleable or ductile fittings is essential due to their ability to withstand the high pressures and temperatures associated with CO2. These materials are specifically designed to handle the mechanical stresses that occur in high-pressure situations, ensuring a secure and leak-proof connection within the system.

Malleable and ductile fittings are made from iron and are treated to enhance their strength and flexibility, allowing them to accommodate the fluctuations in temperature and pressure that can occur. This reliability is vital in preventing accidents and ensuring the safe operation of the system.

Other types of fittings, such as plastic, aluminum, or brass, may not have the strength or durability required for high-pressure applications. Plastic fittings can become brittle under high pressures or temperatures, while aluminum can corrode more easily and may not be suitable for the conditions present in CO2 systems. Brass fittings, although strong, may not provide the same level of durability and resistance to high pressure as Class 300 malleable or ductile materials. Therefore, the choice of fittings must prioritize safety and reliability, making Class 300 malleable or ductile fittings the appropriate choice for high-pressure CO2 systems.