The pump on a residential gun type oil burner is classified as what type of pump?

In residential gun type oil burners, the pump is classified as either a single stage or two stage pump. This classification is important as it influences the pump's ability to deliver oil to the burner at the correct pressure and flow rate.

A single stage pump typically has one impeller and is used for systems that do not require high pressure, making it suitable for lighter fuel oils or for situations where a consistent flow rate is sufficient. Conversely, a two stage pump has two impellers, allowing it to produce higher pressure for more demanding applications, such as heating systems that require more fuel for combustion.

Understanding the difference between these types of pumps is crucial for proper maintenance, troubleshooting, and ensuring that the oil burner operates efficiently within the design specifications of the home heating system.