Monarch Nozzles — American Precision for Oil Burner Applications
Monarch, established in 1917, is a U.S.-based manufacturer of high-performance oil burner nozzles. Designed for residential and industrial heating systems, Monarch nozzles cover a wide range of spray angles and flow rates, offering reliable combustion with both light and heavy fuels up to 13 cSt viscosity.
Key Features
- Flow range: 0.40 to 100 USGPH
- Certified to MTD-92 performance standards
- Clear engraving of capacity, spray angle and pattern
- Strict quality control on all production stages
- Available in brass and stainless steel bodies
Spray Patterns and Series
- R — Solid cone, standard pattern for general use
- NS — Hollow cone, ideal for quiet flame applications
- AR — Improved retrofit version of R type
- PLP — Semi-solid for high-capacity burners (2.25–100 USGPH)
- PL — Full hollow cone, wide angle
- HV — High-velocity, narrow-angle spray for industrial use
- HO — Designed for heavy oil applications at 200–430 PSI
Heavy Oil Operation (HO Series)
HO series nozzles are optimized for oils up to 13 cSt viscosity and are factory-tested at 200 and 430 PSI. They produce uniform, stable spray cones without streaks or angle reduction. Available in 45°, 60°, and 80° with flow capacities up to 100 USGPH.
Technical Specifications
- Body material: brass (optional stainless steel)
- Connection: 1/8″ NPT (male thread)
- Flow tolerance: ±5% at 100 PSI
- Fuel types: #2 fuel oil, heavy oils up to 70 SSU
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