What information do the numbers on a fuel nozzle usually provide?

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The numbers on a fuel nozzle typically provide information about the spray angle and discharge rate. This is crucial for understanding how the fuel will be delivered into the combustion chamber or mixing area.

For example, the spray angle determines how widely the fuel will disperse when sprayed, which can affect the combustion efficiency and performance of the engine or burner. A nozzle with a specific spray angle is designed to optimize fuel atomization and mixing with air, thus enhancing combustion efficiency.

The discharge rate, often measured in gallons per minute (GPM) or liters per minute (LPM), indicates the volume of fuel that can flow through the nozzle at a given pressure. This information is essential for matching the nozzle to the requirements of the specific system, ensuring that the correct amount of fuel is delivered for optimal operation.

In contrast, other options do not encompass the primary function of the numbers on a fuel nozzle. For instance, the fuel type and pressure rating are important specifications but are usually denoted elsewhere or determined by the nozzle's design rather than the numbers printed on it. Similarly, manufacturer and model numbers help identify the nozzle but do not convey operational characteristics, while maximum temperature tolerance is typically found in product documentation rather than directly indicated by the numbers on the nozzle itself

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