What is the function of a burner orifice in gas equipment?

The burner orifice plays a critical role in gas equipment by regulating the flow of gas to the burner. Its primary function is to create a precise opening through which gas can pass. This opening is carefully designed to match the specifications of the burner, ensuring that the gas flow is neither too high nor too low, which is essential for optimal combustion.

By controlling the gas flow rate, the orifice helps maintain the correct air-to-fuel ratio in the burner, which is vital for efficient burning and safety. If the flow is too high, it can lead to a rich mixture that produces excess soot and incomplete combustion. Conversely, if the flow is too low, it can cause the burner to operate inefficiently or even fail to ignite. Thus, the orifice serves as a critical component in achieving the desired burner performance and ensuring the safety and efficiency of gas appliances.