{"product_id":"delavan-55x70a-oil-burner-nozzle-0-55-gph-70-degree","title":"Delavan 55X70A Oil Burner Nozzle 0.55 Gph 70 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe DELAVAN 55X70A is a hollow-cone oil burner nozzle rated at 0.55 gallons per hour (GPH) with a 70-degree spray angle. It atomizes fuel oil into a wide, even hollow-cone pattern, supporting complete combustion and consistent ignition in residential and light-commercial oil-fired heating equipment. The body is constructed from brass with stainless-steel internal components, providing corrosion resistance and dimensional stability over extended service. The nozzle measures 1.625 inches in length with a 0.75-inch outer diameter and uses 9\/16-24 UNEF threads for a standard OEM-compatible fit. Licensed oil burner technicians and HVAC service professionals install this nozzle as part of routine annual maintenance or combustion tune-up service.\u003c\/p\u003e\u003cp\u003eThis nozzle is suited for oil burners requiring a hollow-cone spray pattern, which promotes open fuel dispersion across the combustion head. The 0.55 GPH flow rate targets lower-firing-rate residential applications such as boilers, furnaces, and water heaters running on No. 1 or No. 2 fuel oil. The 70-degree angle is commonly specified for burners with tighter air-tube geometry where a wider cone improves air-fuel mixing without impinging on chamber walls.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHollow-cone spray pattern for open, even fuel dispersion across the combustion head\u003c\/li\u003e\n\u003cli\u003e0.55 GPH flow rate matched to lower-firing-rate residential heating systems\u003c\/li\u003e\n\u003cli\u003e70-degree spray angle for wide fuel distribution in tighter air-tube configurations\u003c\/li\u003e\n\u003cli\u003eBrass body with stainless-steel internal parts for durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003e9\/16-24 UNEF thread standard for OEM-compatible installation\u003c\/li\u003e\n\u003cli\u003e1.625-inch length and 0.75-inch OD for direct drop-in fitment in standard nozzle adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement nozzle for residential and light-commercial oil-fired burners specifying a 0.55 GPH hollow-cone nozzle with a 70-degree spray angle and 9\/16-24 UNEF threads.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed oil burner technician or qualified HVAC professional. Shut down the burner and allow the combustion chamber to cool completely before replacing the nozzle. Use a proper nozzle wrench on the adapter hex to avoid damaging the nozzle body or adapter threads. After installation, verify combustion performance with a flue-gas analyzer to confirm CO2, smoke number, and stack temperature are within equipment specifications before returning the system to service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rate\u003c\/strong\u003e: 0.55 GPH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpray Angle\u003c\/strong\u003e: 70 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpray Pattern\u003c\/strong\u003e: Hollow Cone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Components\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-24 UNEF\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: DELAVAN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 55X70A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DELAVAN","offers":[{"title":"Default Title","offer_id":51346301190450,"sku":"55X70A","price":20.55,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310555397.jpg?v=1782076842","url":"https:\/\/voomisupply.com\/products\/delavan-55x70a-oil-burner-nozzle-0-55-gph-70-degree","provider":"Voomi Supply","version":"1.0","type":"link"}