What is the required relief setting for valve systems in central supply for positive pressure gases?

The required relief setting for valve systems in central supply for positive pressure gases is established to ensure patient safety and the integrity of the medical gas system. A setting of 50% above normal operating pressure is mandated. This significant margin is essential to accommodate unexpected increases in pressure that can occur due to factors such as thermal expansion or malfunctions in the system.

By setting the relief pressure at this higher level, it guarantees that relief valves will activate before the pressure reaches a critical point that could cause damage or failure of the piping and equipment, thus protecting both the infrastructure and the patients relying on these gases.

This safety measure is vital in medical environments where gas delivery systems are under constant pressure, and any fluctuations can have serious implications for patient care.