What is the maximum negative differential pressure permitted?

The maximum negative differential pressure permitted is critical in ensuring that systems function safely and effectively. A negative differential pressure helps to prevent contaminants from entering into clean or controlled environments.

In this context, a value of -0.5 psi represents an acceptable balance where there is sufficient pressure to inhibit the influx of unwanted materials while still allowing the necessary airflow that operations require. It indicates that the area is under the correct amount of negative pressure relative to the surrounding environments, providing an adequate level of containment and safety.

Values beyond -0.5 psi would likely compromise the integrity of the space or system, potentially leading to inadequate containment or operational inefficiencies. Thus, maintaining a pressure that does not exceed -0.5 psi is essential for the reliability and safety of the process.