فوهة Monarch 4.50GPH، 60BPS

This is a Monarch oil nozzle designated as 4.50GPH, 60BPS. The oil nozzle is the component that atomises the fuel oil into a fine cone so that it can mix with combustion air and burn completely. It is a precision consumable part mounted at the end of the oil gun, connected to the oil pump and solenoid valve. In a burner, the nozzle determines the shape and size of the flame together with the combustion head. Parts of this type are selected by three parameters: flow rate at a reference pressure (here 4.50 GPH), spray angle, and spray pattern. The manufacturer code 60BPS indicates a specific combination of angle and pattern, but the exact values should be verified against the burner data plate. Using a nozzle with the correct flow rate but a wrong pattern can cause sooting, pulsation, or unstable ignition. Replacement must therefore match all three characteristics of the original. The thread size is also standardised for the oil gun connection. When sourcing a replacement, confirm that the flow rate (4.50 GPH) and the spray code (60BPS) correspond to what the burner requires. No other adaptations are needed if the nozzle type matches the burner specification.