What does the acronym “B28” refer to in plumbing code?

The acronym “B28” in plumbing code specifically refers to the minimum allowable pressure for testing plumbing systems. This standard is crucial because it establishes the baseline pressure required to ensure the integrity of plumbing systems during testing. Understanding this pressure is essential for identifying potential leaks or weaknesses within the system before it is put into service.

In plumbing practice, adhering to these minimum pressure standards helps ensure that all connections, joints, and other components are secure and functioning correctly. Proper testing at the minimum allowable pressure prevents future issues that could arise from undetected leaks or inadequate pressure, contributing to the overall reliability and safety of plumbing installations.