New York Low Pressure Boiler Certificate of Fitness (COF) Practice Test 2026 - Free COF Practice Questions and Study Guide

The main fuel valve is essential in regulating the flow of oil into the burner. Its primary function is to ensure that the correct amount of fuel oil reaches the burner nozzle. By controlling the flow, the main fuel valve helps maintain the desired burner operation and efficiency, which is vital for optimal combustion and system performance. Proper functioning of this component is critical to safe and effective boiler operation, preventing issues such as flooding or inadequate fuel supply.

While the oil pump is responsible for drawing the fuel from the tank and pushing it towards the burner, and the oil strainer ensures that any impurities in the oil are filtered out before reaching the combustion chamber, it is the main fuel valve that directly regulates the flow at the point of entry into the burner. The spinner cup, on the other hand, is related to the dispersal of oil into a fine mist for better combustion but does not control the flow itself. Understanding the specific role of each component is crucial for maintaining the efficiency and safety of the boiler system.