Are welded joints permitted in a low pressure CO2 system?

Welded joints are indeed permitted in a low pressure CO2 system. This is due to the fact that welded joints create a strong and permanent connection that can withstand the pressures and conditions typically found in a CO2 system. The use of welded joints enhances the overall integrity of the piping and can be especially beneficial in systems that may experience thermal expansion or contraction.

In low pressure systems, the risks typically associated with welded joints, such as cracking or failure under high stress, are significantly reduced. Moreover, the regulations and codes governing the installation of these systems often allow for the use of welding as a viable connection method, provided proper procedures and standards are adhered to during installation.

While threaded joints and flanged joints can also be utilized in specific circumstances, their use can vary based on the application, system design, and pressure ratings. Overall, the flexibility to use welded joints contributes to the reliability and performance of low pressure CO2 systems.