Oil Nozzle - .75 45 BPS - Monarch

.75 45 BPS Monarch Oil Nozzle

Monarch .75 45 BPS oil nozzles are designed for oil‑fired burners requiring variable firing rates with precise flow control through a by‑pass fuel system. Manufactured to Monarch’s exacting standards, these nozzles are ideal for applications where burner output is adjusted by regulating by‑pass pressure rather than changing the nozzle.

Technical Specifications

• Nominal Flow Rate: .75 GPH
• Spray Angle: 45°
• Spray Pattern: BPS By‑Pass System (Variable Orifice)
• Rated Pressure: 100 PSI
• Manufacturer: Monarch Mfg. Works

BPS Spray Pattern (By‑Pass System)

Monarch BPS (By‑Pass System) nozzles produce variable orifice flow rates by diverting a portion of the fuel from the nozzle swirl chamber back through the by‑pass line. By controlling by‑pass line pressure, the effective nozzle flow rate can be accurately adjusted while maintaining proper spray characteristics. This design allows smooth modulation across a wide firing range without changing nozzles, making BPS nozzles especially well suited for burners requiring fine control at lower GPH outputs.

Applications

• Oil‑fired burners with by‑pass fuel systems

• Burners requiring modulating or variable firing rates

• Commercial and specialty burners using pressure‑regulated fuel control

• Service replacement where Monarch BPS nozzle design and 45° spray angle are specified