Delavan Oil nozzle 00400-60W7

The Delavan Oil nozzle 00400-60W7 is a precision component used in oil burners to atomize fuel into a fine spray for efficient combustion. It has a capacity of 4 gallons per hour, a spray angle of 60 degrees, and a W spray pattern. This nozzle is identified by article numbers 00400-60W7, 3042180, and 345.892.036. It is designed to be installed at the end of the blast tube in the combustion head, connected to the high-pressure oil line.

Parts of this type are selected by three parameters: flow rate at reference pressure, spray angle (commonly between 30° and 80°), and spray pattern (hollow, solid, or semi-solid cone). The thread size must match the nozzle holder. Before ordering, verify these parameters against the burner data plate or original part. Incorrect selection can lead to sooting, pulsating combustion, or unstable ignition.

Items of this kind can fail due to dirt or mishandling, which damages the orifice and internal swirl passages, degrading spray quality. Symptoms include sooting, pulsating combustion, or unstable ignition. Check the nozzle for blockages or damage if these issues occur.