Which ULTRA H2O
Spray Nozzle Do I Need?
Find the correct ULTRA H2O Spray Nozzle for your pressure washer by matching its water flow rate to the correct orifice size.
We've put together this guide to help you choose the right nozzle for some of the most popular pressure washers used by detailers in the UK.
It's All About Flow Rate
The Rag Company ULTRA H2O Spray Nozzles are available in three different orifice sizes. The correct size depends on the amount of water your pressure washer can deliver.
This is usually measured as litres per hour (L/hr). If your pressure washer has a 'litres per minute' measurement, simply times this by 60.
When choosing your ULTRA H2O nozzle, it's important to look at your pressure washer's flow rate rather than simply its pressure rating. PSI and bar tell you about pressure; L/min or L/hr tells you how much water the machine actually delivers.
Why Does The Orifice Size Matter?
The orifice controls the amount of water flowing through the nozzle. Choosing the correct size for your pressure washer's flow rate helps the ULTRA H2O system perform as intended. It also means your pressure washer is not put under additional stress from the incorrect sized nozzle.
Simply put: find or work out your pressure washer's L/hr figure, then choose the corresponding ULTRA H2O nozzle.
Choose The Correct Orifice
ULTRA H2O Spray Nozzles are available in three orifice sizes. Match your pressure washer's flow rate to the appropriate nozzle below.
For pressure washers delivering 295 - 409 L/hr
For pressure washers delivering 409 - 522 L/hr
For pressure washers delivering 522 - 636+ L/hr
Find Your Pressure Washer
We've listed the flow rates and recommended ULTRA H2O nozzle sizes for a selection of popular pressure washers available in the UK.
Simply find your pressure washer in the table below to see which ULTRA H2O nozzle you need.
| Pressure Washer | Flow Rate | ULTRA H2O Nozzle |
|---|---|---|
| Active 2.0 | ~525 L/hr | 5.0 |
| Active 2.3 | ~519 L/hr | 5.0 |
| Active 3.0 | ~708 L/hr | 5.0 |
| AVA Easy P57 | 500 L/hr | 4.0 |
| AVA Evolution P70 | 540 L/hr | 5.0 |
| AVA Evolution P80 | 600 L/hr | 5.0 |
| AVA GO P40 | 390 L/hr | 3.0 |
| AVA GO P55 | 450 L/hr | 4.0 |
| AVA Master 2.0 P70 | 540 L/hr | 5.0 |
| Direct Hoses B5 | 480 L/hr | 4.0 |
| Direct Hoses B9V2 | 600 L/hr | 5.0 |
| Direct Hoses Grey 7 | 420 L/hr | 4.0 |
| Direct Hoses Grey 10 | 600 L/hr | 5.0 |
| Kärcher HDS 10/21-4 M | 1,000 L/hr | 5.0 |
| Kärcher HDS 6/12 C | 560 L/hr | 5.0 |
| Kärcher HDS 7/10-4 M | 700 L/hr | 5.0 |
| Kärcher K2 | 360 L/hr | 3.0 |
| Kärcher K3 | 380 L/hr | 3.0 |
| Kärcher K4 | 500 L/hr | 4.0 |
| Kärcher K5 | 510 L/hr | 4.0 |
| Kärcher K6 | 600 L/hr | 5.0 |
| Kärcher K7 | ~550 L/hr | 5.0 |
| Kiam DTLR 2 LITE | 507 L/hr | 4.0 |
| Kiam DTLR 2 Pro | 600 L/hr | 5.0 |
| Kranzle K10 | 600 L/hr | 5.0 |
| Kranzle K7 | 420 L/hr | 4.0 |
| Nilfisk Core 125-5 | 440 L/hr | 4.0 |
| Nilfisk Core 130-6 | 465 L/hr | 4.0 |
| Nilfisk Core 140-8 | 465 L/hr | 4.0 |
| Nilfisk Core 150-10 | 468 L/hr | 4.0 |
| Nilfisk Excellent 160 | 450 L/hr | 4.0 |
| Nilfisk Excellent 170 | 498 L/hr | 4.0 |
| Nilfisk Premium 180-10 | 610 L/hr | 5.0 |
| Nilfisk Premium 200-15 | 610 L/hr | 5.0 |
How Do I Find My Pressure Washer's Flow Rate?
Your pressure washer's flow rate is normally listed in the manufacturer's technical specifications or user manual. Look for a figure expressed as either L/min (litres per minute) and, as above, L/hr (litres per hour). Multiply litres per minute by 60 to get your litres per hour figure and compare it against the information above. You'll then be able to find the right Ultra H2O Nozzle for you.
Can't Find Your Pressure Washer?
Don't worry. You don't need to have one of the machines listed above to choose the correct ULTRA H2O nozzle.
Simply find your pressure washer's water flow rate in L/hr and match it to the recommended orifice size.
Get The Right ULTRA H2O Nozzle For Your Machine
Now you know which orifice size you need, you're ready to get the most from your ULTRA H2O setup.
Shop ULTRA H2O Spray NozzlesULTRA H2O Spray Nozzle Frequently Asked Questions
The correct ULTRA H2O nozzle depends on your pressure washer's water flow rate in litres per hour (L/hr). Find your pressure washer in the table above or check the manufacturer's specifications.
No. The key specification is your pressure washer's water flow rate, measured in either L/min or L/hr. Pressure and flow rate are separate specifications.
Yes. If two pressure washers have flow rates that fall within the recommended range for the same ULTRA H2O nozzle, the same nozzle can be used with both machines.
Using the wrong orifice size can affect the performance of your pressure washer and ULTRA H2O equipment. Always select the nozzle based on the manufacturer's stated flow rate.
You can still choose the correct nozzle. Simply find your pressure washer's water flow rate in L/min or L/hr and match it to the appropriate ULTRA H2O orifice size.
The orifice size refers to the diameter of the opening through which water passes. Different orifice sizes are designed to work with different pressure washer flow rates.
If you need further help choosing an Ultra H2O Nozzle or any other product from the H2O range, feel free to contact us.
The Clean + Shiny Team.