Delavan oil nozzles are all bi-metal construction featuring brass body with stainless steel metering parts. * The brass gives up heat faster after shutdown so that varnish and oil residue buildup, caused by high temperatures, is greatly reduced. * Stainless steel is used in the orifice and distributor to provide the necessary durability in those parts where wear is a factor. * Each nozzle is factory tested to assure spray quality, correct flow rate, and spray angle, and is shipped in a snap-tight plastic vail to protect against damage or contamination. * Produces a spray patter which delivers fine droplets outside the periphery of the main cone. Enhances ignition and creates a very stable flame, especially well suited to fracitonal gallonage and flame retention burners, or with high viscosity oils.