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.

EOGB Energy Products Group Announces Acquisition of Harry Taylor HVAC

Screenshot 2026-07-28 151653

EOGB Energy Products Group Ltd has recently acquired Harry Taylor HVAC to add to its group of companies and brands.

Harry Taylor has been providing reliable heating solutions and services to commercial and industrial customers across the UK for 100 years. Their extensive service offering includes industrial heating, evaporative cooling solutions, installation, comprehensive maintenance, and ongoing service support for a wide range of facilities, including factories, warehouses, workshops, leisure centres, and retail spaces. Over the years, Harry Taylor HVAC has built an impressive portfolio of prestigious clients across the UK.

Owner of EOGB Energy Products Group Martin Cooke commented:
“This is a fantastic company with over 100 years trading; we are proud to have this in our group. Harry Taylor has a fantastic team, and with EOGB collaboration I’m sure we can go from strength to strength. The previous owners have done a fantastic job operating this business for generations, and it’s an honour to have acquired it and to give it a new home”.

Sapphire Heat Solutions

Previous Thank You for visiting EOGB at Installer Show 2026

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.