The opening in a cap spud or other device whereby the flow of gas is limited and through which the gas is discharged to the burner is

The opening in a cap spud or other device whereby the flow of gas is limited and through which the gas is discharged to the burner is

• A. Orifice
• B. Nozzle
• C. Jet
• D. Orifice plate

Answer: (A)

An orifice is the small, calibrated opening that limits gas flow and delivers it to the burner. Its size determines how much gas can pass at a given pressure, providing the proper flow rate for the burner’s operation and the correct gas–air mixture for combustion. A nozzle mainly shapes the flame rather than meter flow, an orifice plate is a separate plate used for flow measurement or restriction, and a jet refers to a stream rather than the restrictive opening in the cap spud.

An orifice is the small, calibrated opening that limits gas flow and delivers it to the burner. Its size determines how much gas can pass at a given pressure, providing the proper flow rate for the burner’s operation and the correct gas–air mixture for combustion. A nozzle mainly shapes the flame rather than meter flow, an orifice plate is a separate plate used for flow measurement or restriction, and a jet refers to a stream rather than the restrictive opening in the cap spud.