What is the maximum gas pressure limit set for connected appliances in the event of line pressure regulator failure?

The maximum gas pressure limit for connected appliances in the event of a line pressure regulator failure is set at 2 PSI. This limit is established to protect the appliances and ensure their safe operation. When gas pressure exceeds this threshold, there is an increased risk of damage to the appliances, which can lead to potential hazards such as gas leaks, malfunctions, or even explosions. Keeping the pressure limit at 2 PSI helps to maintain a margin of safety and compliance with industry standards designed to prevent adverse situations.

This standard reflects guidelines set by organizations involved in gas safety, such as the National Fire Protection Association (NFPA) and the American National Standards Institute (ANSI), which aim to ensure that appliances function safely under various conditions, including potential regulator failures.

Understanding this safety margin is crucial for anyone working with gas appliances to ensure that all operational pressures remain within safe levels, thereby promoting overall safety in gas management and appliance operation.