70A Red Hollow Cone Burner Nozzle 1.75 GPH – OEM Replacement Part
Part Number: 1330
Category: Pressure Washer Parts → Burner Components → Burner Nozzles
Type: Delavan 70A Hollow Cone Oil Burner Nozzle
The Delavan 70A Red Hollow Cone Burner Nozzle 1.75 GPH is a precision-engineered oil burner nozzle designed to provide reliable ignition, efficient fuel atomization, and consistent combustion performance in hot water pressure washers, oil-fired heating systems, boilers, and industrial burner equipment. Featuring a 70-degree hollow cone spray pattern and 1.75 gallon per hour (GPH) flow rate, this nozzle is specifically engineered for burner systems that utilize hollow cone air patterns.
Key Features & Benefits
- Genuine Delavan OEM burner nozzle
- 1.75 GPH fuel flow rate
- 70-degree spray angle
- Type A hollow cone spray pattern
- Excellent fuel-air mixing characteristics
- Reliable ignition performance
- Efficient fuel atomization
- Low-noise combustion operation
- Stable flame development
- Precision-machined internal components
- Integrated sintered filter for contamination protection
- Durable corrosion-resistant construction
- ISO 9001 certified manufacturing
Technical Specifications
Part Number: 1330
Manufacturer: Delavan
Series: Type A Hollow Cone
Size: 70A 1.75
Flow Rate: 1.75 GPH
Spray Angle: 70°
Spray Pattern: Hollow Cone
Color Code: Red
Thread Size: 9/16"-24
Fuel Type: Fuel Oil
OEM Replacement: Yes
Certification: ISO 9001 Certified
Type A Hollow Cone Spray Pattern Advantages
The Delavan Type A hollow cone design offers:
- Fuel concentration around the outer edge of the spray cone
- Superior fuel-air mixing
- Fast and dependable ignition
- Smooth burner startup
- Stable flame characteristics
- Reduced combustion noise
- Efficient heat production
- Reliable burner operation
This spray pattern is commonly specified for burners designed around hollow cone fuel distribution requirements.
Advanced Design Features
- Precision-machined spray components
- Optimized spray uniformity
- Reduced distributor size for improved reliability
- Shorter tangential slots to help prevent plugging
- Aerodynamic nozzle body configuration
- Rolled threads to eliminate chips and burrs
- Sintered filter sized for maximum protection
- Factory tested and cleaned before shipment
Typical Applications
- Hot water pressure washer burners
- Oil-fired heating systems
- Commercial burner assemblies
- Industrial combustion equipment
- Boilers and furnaces
- Agricultural heating systems
- Mobile wash units
- Asphalt maintenance equipment
- Burner repair and maintenance services
Performance Benefits
- Reliable burner ignition
- Consistent combustion performance
- Efficient fuel atomization
- Stable flame formation
- Reduced burner noise
- Improved combustion efficiency
- Consistent heat output
- Long operational lifespan
Signs a Burner Nozzle May Need Replacement
Replace the nozzle if you notice:
- Delayed ignition or hard starts
- Excessive smoke production
- Unstable flame patterns
- Reduced heating efficiency
- Increased fuel consumption
- Carbon buildup
- Burner performance issues
- Restricted fuel flow
Installation Notes
- Disconnect power and fuel supply before servicing.
- Remove the existing nozzle carefully.
- Inspect fuel filters and supply lines for contamination.
- Install the replacement nozzle according to manufacturer specifications.
- Verify the flow rate, spray angle, and spray pattern match burner requirements.
- Test burner operation after installation.
- Adjust combustion settings if necessary.
Important: Always install the nozzle size, spray angle, and spray pattern recommended by the burner manufacturer to ensure safe operation and optimal combustion performance.
Maintenance Recommendations
- Replace burner nozzles during scheduled maintenance intervals.
- Maintain clean fuel filtration systems.
- Use clean, water-free fuel.
- Inspect burner flame quality regularly.
- Verify fuel pressure settings during service.
- Replace worn nozzles promptly to maintain efficient operation.
