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

EOGB Products With Shadow Apen transparent

EOGB in partnership with Apen who are world leaders in industrial heating and ventilation, including gas/heat pump hybrid systems.

If you need a heat or cooling solution for your factory, warehouse, exhibition halls, supermarkets, green houses, gymnasiums, sports halls to name but a few, we have a solution for every application!

Apen Group Products

REQUEST A CALLBACK!

FIND OUT MORE!

For more information on site surveys, quotations, our products for heating & cooling environments, sports facilities, and places of worship, please complete our contact form and one of our experts will be in touch to discuss.

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.

Our Story

News

Case Studies

Meet the Team

EOGB

Baltur

Apen Group

Sapphire

Returns

FAQs

Technical Help

Apen Group

REQUEST A CALLBACK!

FIND OUT MORE!

Our Story

News

Case Studies

Meet the Team

EOGB

Baltur

Apen Group

Sapphire

Returns

FAQs

Technical Help

Apen Group

REQUEST A CALLBACK!

FIND OUT MORE!

We use cookies on this website

Cookie Preferences

Essential

Analytics

Advertising

Security Check