Case Studies

H.G. Matthews

Building on success at H.G. Matthews

LEARN MORE

Hofmann

Making a mark on specialist heating applications for Hofmann

LEARN MORE

1 2 3 4 NEXT

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 (Gas Oil 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 gas oil.

**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)
Gas oil: 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

Case Studies

Our Story

News

Case Studies

Meet the Team

EOGB

Baltur

Apen Group

Sapphire

Returns

FAQs

Technical Help

Case Studies

We use cookies on this website

Cookie Preferences

Essential

Analytics

Advertising

Security Check