What is one function of an appliance regulator in a gas system?

One important function of an appliance regulator in a gas system is to control pressure. Regulators are designed to reduce the high pressure of gas coming from a supply source to a usable lower pressure that is suitable for appliances. This ensures that the appliances receive gas at a consistent and safe pressure level, which is crucial for their proper operation and efficiency. If the pressure were too high, it could cause malfunctions or even dangerous situations such as leaks or explosions.

Appliance regulators play a critical role in maintaining the correct gas pressure and enabling appliances to function safely and effectively, aligning with NFPA 58 standards that emphasize safety and performance in gas systems.