70B Blue Solid Cone Burner Nozzle 2.50 GPH – OEM Replacement Part
Part Number: 1337
Category: Pressure Washer Parts → Burner Components → Burner Nozzles
Type: Delavan 70B Solid Cone Oil Burner Nozzle
The Delavan 70B Blue Solid Cone Burner Nozzle 2.50 GPH is a premium oil burner nozzle designed for dependable 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 solid cone spray pattern and 2.50 gallon per hour (GPH) flow rate, this nozzle delivers uniform fuel distribution throughout the spray pattern for reliable burner operation and efficient heat production.
Key Features & Benefits
- Genuine Delavan OEM burner nozzle
- 2.50 GPH fuel flow rate
- 70-degree spray angle
- Type B solid cone spray pattern
- Uniform fuel distribution throughout the spray cone
- Reliable ignition performance
- Efficient fuel atomization
- Stable flame development
- Smooth combustion operation
- Precision-machined internal components
- Integrated sintered filter for contamination protection
- Durable corrosion-resistant construction
- ISO 9001 certified manufacturing
Technical Specifications
Part Number: 1337
Manufacturer: Delavan
Series: Type B Solid Cone
Size: 70B 2.50
Flow Rate: 2.50 GPH
Spray Angle: 70°
Spray Pattern: Solid Cone
Color Code: Blue
Thread Size: 9/16"-24
Fuel Type: Fuel Oil
OEM Replacement: Yes
Certification: ISO 9001 Certified
Type B Solid Cone Spray Pattern Advantages
The Delavan Type B nozzle provides:
- Uniform droplet distribution throughout the complete spray pattern
- Excellent fuel-air mixing characteristics
- Smooth burner startup and ignition
- Stable flame formation
- Efficient heat production
- Reliable combustion performance
- Consistent burner operation
Although Type B nozzles gradually become more hollow at higher flow rates, particularly above 8.00 GPH, the 2.50 GPH model maintains excellent solid cone distribution for dependable burner performance.
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 systems
- Asphalt maintenance equipment
- Burner service and maintenance applications
Performance Benefits
- Reliable burner ignition
- Consistent combustion quality
- Efficient fuel atomization
- Stable flame development
- Enhanced burner efficiency
- Uniform fuel delivery
- Reduced maintenance requirements
- Long operational service life
Signs a Burner Nozzle May Need Replacement
Replace the nozzle if you notice:
- Delayed ignition or hard starts
- Excessive smoke production
- Poor flame quality
- Reduced heating performance
- Increased fuel consumption
- Carbon buildup
- Burner instability
- 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 recommendations.
- Verify the correct flow rate, spray angle, and spray pattern.
- Test burner operation after installation.
- Adjust combustion settings if necessary.
Important: Always install the nozzle size, spray angle, and spray pattern specified by the burner manufacturer to maintain safe operation, proper combustion efficiency, and optimal burner performance.
Maintenance Recommendations
- Replace burner nozzles during routine maintenance intervals.
- Maintain clean fuel filtration systems.
- Use clean, water-free fuel.
- Inspect flame quality and burner performance regularly.
- Verify fuel pressure settings during service.
- Replace worn or contaminated nozzles promptly.
