During the purging process, what is the correct procedure?

During the purging process, the correct procedure is to stop when the pressure ceases to drop. This indicates that the purging is complete and that there is no longer any residual gas or pressure in the system. Continuing to purge beyond this point is unnecessary, as it could lead to excessive waste of material or resources without any additional benefit.

Moreover, recognizing that pressure indicates the level of contaminants remaining in the system is critical; once the pressure stabilizes and ceases to drop, it usually signifies that all unwanted gas or air has been effectively cleared. This method helps ensure the system is safe and ready for operation without the risks associated with trapped gases or impurities.

Alternatives like stopping when reaching a desired pressure may not account for variations in system conditions, while continuing until there is no noise does not provide a reliable metric for completion. Conducting purging daily may not be necessary depending on the operational requirements or the previous conditions of the system. Thus, stopping when pressure stabilizes is the soundest approach.