Monarch 28.00GPH, ugello 60PLP

This is an oil nozzle from Monarch, a precision consumable part that atomises fuel oil into a fine spray cone for complete combustion. The manufacturer’s designation 28.00GPH, 60PLP indicates a flow rate of 28.00 US gallons per hour at the reference pressure, a 60-degree spray angle, and a specific spray pattern coded PLP. This nozzle is installed in the combustion head of an oil burner and receives pressurised oil from the pump via the solenoid valve and preheater. For any oil burner, the nozzle’s flow rate, spray angle, and spray pattern together determine how the flame sits in the combustion head. The flow rate must match the burner’s required output; the angle and pattern affect flame shape and stability. Selecting a nozzle with the correct rating but a wrong pattern can cause sooting, pulsation, or unstable ignition, so all three parameters must be verified against the burner data plate before replacement. This Monarch nozzle is intended for applications where a 60-degree angle and the PLP pattern are specified. As a consumable item, the nozzle should be replaced at regular intervals or when combustion quality deteriorates. It threads directly into the burner’s nozzle adapter, and care is needed to avoid contamination or damage during installation.