Are brazed joints allowed for the connection of copper tube in a standpipe system?

Brazed joints are not permitted for the connection of copper tubes in a standpipe system. This prohibition is primarily based on safety standards and regulations that govern the installation of fire protection systems, including standpipes. The integrity of the connections within these systems is crucial as they are responsible for delivering water in case of a fire.

Soldered connections are often preferred over brazed joints because they provide a reliable and more flexible solution that can endure the thermal expansion and contraction associated with changes in temperature during operation. Moreover, brazed joints can introduce weaknesses if not executed perfectly, potentially leading to failures in high-pressure systems like those found in standpipes.

In summary, the choice to use soldered joints instead of brazed connections helps ensure the reliability and safety of fire protection systems, which directly affects the overall effectiveness of fire suppression efforts.