What does a gas valve do in a gas system?

A gas valve serves a crucial role in a gas system by stopping or allowing the flow of gas. This functionality is essential for regulating gas supply to various appliances or systems, ensuring safety and efficiency. When the valve is closed, it prevents gas from flowing through, which is critical during maintenance or emergencies to minimize risks associated with gas leaks or hazards. When opened, it permits the gas to flow through the system, enabling the operation of appliances that rely on gas.

In contrast, controlling the temperature of the gas, measuring gas pressure, and igniting the gas on demand describe other functions that are typically associated with different components in a gas system. For instance, thermoregulators might be involved in temperature control, manometers are used for measuring pressure, and igniters are the components that actually initiate gas combustion, but none of these are performed by a gas valve itself. The primary and most significant function of a gas valve is to manage the flow of gas.