When is the initial pressure test conducted by the installer?

The initial pressure test is typically conducted after blow down of the distribution piping. This step is crucial because the blow down process helps to remove any debris, contaminants, or moisture that may be present inside the piping before the system is put into operation. Conducting the pressure test at this stage allows the installer to verify the integrity of the piping system under pressure, ensuring that there are no leaks or failures.

By performing the pressure test after the blow down, the installer can confirm that the system can safely handle the operating pressures and that all joints, fittings, and connections are sealed properly. This helps ensure both the safety of the system and compliance with required regulations and standards for medical gas installations.