Massachusetts Oil Burner License Practice Test

The flow rate stamped on the nozzle is based on what pressure?

1. 50 PSI

2. 100 PSI

3. 150 PSI

4. 200 PSI

The correct answer is: 100 PSI

The flow rate stamped on an oil burner nozzle is standardized based on a pressure of 100 PSI. This means that the nozzle is designed and tested to provide a specific flow rate when the oil is delivered at this pressure. Understanding this standard is crucial for oil burner technicians, as it ensures the system operates efficiently and effectively. Using a nozzle with a different pressure rating than 100 PSI can significantly affect the performance of the burner. Higher pressures, for instance, might lead to excessive fuel delivery and incomplete combustion, while lower pressures can result in insufficient fuel being delivered and poor heating efficiency. Knowing that the flow rate is based on 100 PSI allows technicians to select the right nozzle for specific applications, ensuring that they maintain proper burner operation, optimize fuel efficiency, and adhere to safety regulations.