What is the primary function of an orifice in a gas device?

The primary function of an orifice in a gas device is to restrict flow. An orifice is essentially a small opening or hole that regulates the amount of gas that can pass through it. By controlling this flow, an orifice helps ensure that the gas is delivered at the correct pressure and rate to the device, which is crucial for the efficient and safe operation of appliances such as gas burners and heaters.

The precise control of gas flow by the orifice directly impacts the performance of the device. In applications like gas burners, the size and shape of the orifice can determine the flame characteristics, which affects both efficiency and safety. Therefore, understanding the role of an orifice in regulating gas flow is essential for anyone working with gas appliances.

In contrast, measuring pressure involves different components like pressure gauges, while connecting pipes is managed through fittings and joints. Igniting gas is handled by ignition systems, which involve various methods such as piezoelectric igniters or pilot lights. Thus, the primary role of an orifice distinctly centers on flow restriction, making the choice accurate.