NOZZLE CALCULATOR

Summer Hours Update
We are updating our schedule for the season. Our working hours from 1st June to 31st August:
Monday - Thursday | 8am - 4:30pm
Friday | 8am - 1:30pm
Please plan your calls and orders accordingly. Thank you.

Apen Group Products

Air Destratificators

Download the Manual Download the Brochure

Evaporative Cooling

Download the Installation Manual Download the Mainenance Manual Download the Brochure

Heat Exchanger Modules for Industrial Processes

Download the EMS-K Manual Download the EMS-K Brochure

Download the EMS-N Brochure Download the EMS-N Manual

Download the GH-K Brochure Download the GH-K Manual

Download the GH-N Brochure Download the GH-N Manual

Download the GO Brochure Download the GO Manual

Download the PCH Brochure Download the PCH Maintenance Manual Download the OEM Manual

Download the PK-N Brochure Download the PK-N Manual

Heat Exchanger Modules for Roof-Top Units and AHUs

Download the EMS-K Brochure Download the EMS-K Manual

Download the GH-K Brochure Download the GH-K Manual

Download the PCH Brochure Download the PCH Maintenance Manual Download the PCH OEM Manual

Fan Heaters

Download the AX Manual Download the AX-EC Manual Download the Brochure

Heaters

Download the Kondensa Series LK and LKN Brochure Download the LK Manual Download the LKN Manual

Download the LKH Brochure Download the LKH Manual

Download the PK-K Brochure Download the PK-K Manual

Download the PK-SPORT Brochure Download the PK-SPORT Manual

Download the Rapid Pro Series LRP and LRN Brochure Download the Rapid Pro Series LRP Manual Download the Rapid Pro Series LRN Manual

Heating Units

Download the AH Brochure Download the AH Technical and Commercial Manual Download the AH Maintenance, Installation and Support Manual

Download the AH-SPORT Brochure Download the AH-SPORT Manual

Hybrid System

Download the Aquapump Hybrid Brochure Download the Aquapump Hybrid Manual

EOGB ACCREDITATIONS

EOGB Nozzle Calculator

Details

Select fuel type: Select nozzle brand: Select nozzle size: Enter efficiency: Enter PSI:

Results

Pressure

Ref. Pressure:

Pump Pressure:

Nozzle

Size:

Capacity:

Act. Flow Rate:

Flow Rate:

Efficiency:

Input:

Outputs

Select the fuel type (Gasoil or Kerosene).
Choose the nozzle pattern type—Danfoss EH/ES*, Danfoss H, S, B, Delavan A, W, B, or Monarch AR, R, NS, & PLP.
Select the nozzle size from the dropdown list.
Enter the appliance efficiency:
- If the efficiency is unknown, assume approx 80% for a non-condensing boiler, 90% for condensing.
- For burner output calculations, set efficiency to 100%.
Adjust pump pressure until desired kW output:
- If output cannot be reached, select a different nozzle size and recalc.

Important Notes:

*EH/ES nozzles are not suitable for gasoil.

**Boiler efficiencies provided are approximate guides. Consult manufacturer for precise info.

***Pump pressure requirements vary depending on fuel type:

Kerosene: 100–145 psi (6.9–10 bar)
Gasoil: 174–319 psi (12–22 bar)

Always consult pump manufacturer for min/max pump pressures.

This nozzle calculator serves as a general guide for estimating outputs based on Delavan, Danfoss, and Monarch nozzles at specified pressures. Follow manufacturer instructions when available.

Danfoss EH & ES: reference 8 bar
Danfoss H, S, B: reference 10 bar
Delavan A, B, W: reference 6.89 bar
Monarch AR, R, NS, PLP: reference 6.89 bar

Different nozzles at same pressure produce different throughput. Verify pump pressure and nozzle size.

Example: 0.50 GPH EH/ES nozzle at 125 psi → ~20.12 kW. Swap to H/S/B → ~22.43 kW.

Delavan W up to 8.00 GPH
Danfoss EH/ES up to 2.00 GPH, >1.10 GPH obsolete
Danfoss EH/ES only for kerosene

Always consult manufacturer for pump settings.

EOGB not responsible for misuse. Verify info for your application.

All figures based on OFTEC fuel densities (Kerosene 0.79kg/lt, Gasoil 0.84kg/lt). Nozzle capacities from Danfoss/Delavan.