Description
**INCLUDES 1/4 QC PLUG**
Rotojet 255 Turbo Nozzle, 08 orifice
Max Pressure: 3700 psi
Min Pressure: 1150 Psi
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A Guide to Choosing the Perfect Pressure Washer Nozzle
It Starts with Colour: Understanding Spray Angles
Most people know nozzles by their colour, which signifies the width or angle of the spray pattern, not the size.
0° (Red)
🎯
A pinpoint jet for maximum pressure on tiny, tough spots. Use with extreme caution!
15° (Yellow)
📏
A narrow fan for concentrated cleaning on hard surfaces, and great for rinsing
25° (Green)
✅
The all-purpose nozzle. A medium fan perfect for general cleaning.
40° (White)
🚗
A wide, gentle fan for delicate surfaces.
65° (Black)
🧼
The soaping nozzle. Very low pressure allows for the application of detergents and cleaning solutions when used with a downstream injector.
The Hidden Factor: Orifice Size!
This is the secret to performance and safety. The orifice is the tiny hole the water exits. Its size, combined with your machine’s flow rate, determines the actual pressure (PSI) you get.
The Performance Equation
Machine Flow
LPM
Nozzle Orifice
Size
Actual Pressure
PSI
Think of it like putting your thumb over a garden hose. A smaller hole (orifice) creates more pressure, but only if the water flow (LPM) is correctly matched.
Using the wrong nozzle size can…
Overload
…your pump, leading to premature failure and costly repairs.
Detailed Nozzle Size Reference Table
For a precise match, use this comprehensive table. Locate your machine’s PSI along the top row, then find its LPM in the corresponding column to identify the recommended nozzle orifice size.
| Nozzle Size (Orifice) | 2030 PSI (LPM) | 2175 PSI (LPM) | 2320 PSI (LPM) | 2610 PSI (LPM) | 2900 PSI (LPM) | 3190 PSI (LPM) | 3480 PSI (LPM) | 3625 PSI (LPM) | 4060 PSI (LPM) | 4350 PSI (LPM) | 4640 PSI (LPM) | 5075 PSI (LPM) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 02 | 5.4 | 5.6 | 5.8 | 6.2 | 6.5 | 6.8 | 7.1 | 7.3 | 7.7 | 7.9 | 8.2 | 8.6 |
| 023 | 5.9 | 6.1 | 6.3 | 6.7 | 7.1 | 7.4 | 7.7 | 7.9 | 8.4 | 8.7 | 9.0 | 9.4 |
| 025 | 6.6 | 6.9 | 7.1 | 7.5 | 7.9 | 8.0 | 8.7 | 8.9 | 9.4 | 9.7 | 10.0 | 10.5 |
| 027 | 7.2 | 7.5 | 7.7 | 8.2 | 8.6 | 9.0 | 9.5 | 9.8 | 10.2 | 10.6 | 11.0 | 11.4 |
| 030 | 7.8 | 8.2 | 8.5 | 9.0 | 9.5 | 9.9 | 10.4 | 10.8 | 11.2 | 11.7 | 12.1 | 12.5 |
| 032 | 8.4 | 8.7 | 9.0 | 9.5 | 10.0 | 10.5 | 11.0 | 11.3 | 11.8 | 12.2 | 12.7 | 13.1 |
| 035 | 9.2 | 9.6 | 9.9 | 10.5 | 11.0 | 11.6 | 12.1 | 12.5 | 13.0 | 13.5 | 14.0 | 14.5 |
| 037 | 9.9 | 10.3 | 10.6 | 11.3 | 11.8 | 12.3 | 12.9 | 13.3 | 13.8 | 14.3 | 14.8 | 15.3 |
| 040 | 10.8 | 11.1 | 11.5 | 12.2 | 12.9 | 13.5 | 14.1 | 14.6 | 15.2 | 15.8 | 16.3 | 16.9 |
| 043 | 11.6 | 12.0 | 12.4 | 13.1 | 13.8 | 14.5 | 15.1 | 15.6 | 16.2 | 16.8 | 17.4 | 18.0 |
| 045 | 12.0 | 12.4 | 12.8 | 13.6 | 14.3 | 15.0 | 15.7 | 16.2 | 16.8 | 17.4 | 18.1 | 18.7 |
| 050 | 13.7 | 14.2 | 14.6 | 15.5 | 16.3 | 17.1 | 17.9 | 18.5 | 19.2 | 19.9 | 20.6 | 21.3 |
| 053 | 14.4 | 14.9 | 15.4 | 16.3 | 17.2 | 18.0 | 18.8 | 19.4 | 20.2 | 20.9 | 21.7 | 22.4 |
| 055 | 15.0 | 15.5 | 16.0 | 17.0 | 17.9 | 18.7 | 19.6 | 20.2 | 21.0 | 21.8 | 22.6 | 23.4 |
| 060 | 16.4 | 17.0 | 17.5 | 18.6 | 19.6 | 20.6 | 21.5 | 22.3 | 23.2 | 24.0 | 24.9 | 25.7 |
| 065 | 17.9 | 18.5 | 19.1 | 20.3 | 21.4 | 22.4 | 23.4 | 24.2 | 25.2 | 26.1 | 27.0 | 27.9 |
| 070 | 19.3 | 20.0 | 20.6 | 21.9 | 23.1 | 24.2 | 25.3 | 26.2 | 27.2 | 28.2 | 29.2 | 30.2 |
| 075 | 20.6 | 21.3 | 22.0 | 23.4 | 24.7 | 25.9 | 27.0 | 28.0 | 29.0 | 30.1 | 31.2 | 32.2 |
| 080 | 22.1 | 22.8 | 23.5 | 25.0 | 26.4 | 27.7 | 28.9 | 30.0 | 31.1 | 32.2 | 33.4 | 34.5 |
| 085 | 23.5 | 24.3 | 25.0 | 26.6 | 28.0 | 29.4 | 30.7 | 31.8 | 33.0 | 34.2 | 35.4 | 36.6 |
| 090 | 24.8 | 25.6 | 26.4 | 28.0 | 29.5 | 31.0 | 32.3 | 33.5 | 34.8 | 36.0 | 37.3 | 38.6 |
| 095 | 26.2 | 27.0 | 27.8 | 29.5 | 31.1 | 32.6 | 34.0 | 35.3 | 36.6 | 37.9 | 39.2 | 40.6 |
| 100 | 27.6 | 28.5 | 29.3 | 31.1 | 32.8 | 34.3 | 35.7 | 37.0 | 38.4 | 39.8 | 41.2 | 42.6 |
The Dangers of a Mismatch
Choosing the wrong size isn’t just inefficient—it’s damaging. Here’s what happens when the orifice size is incorrect for your machine’s flow rate.
⚠️ Nozzle Too Small
- Pump Overload: Creates extreme back-pressure, straining the pump and motor.
- Reduced Flow: The machine can’t push out its rated LPM, hindering cleaning.
- Risk of Damage: Can cause overheating and premature failure of seals and components.
📉 Nozzle Too Large
- A good trick to drop pressure: A great option to lower your pressure deliberately to ‘softwash’ or rinse easier, while retaining full flow from the machine
But when not desired:
- Inefficient Cleaning: You’ll spend more time and water trying to clean simple surfaces.
- Wasted Potential: You’re not getting the performance you paid for from your machine.
Your 3-Step Guide to Nozzle Success
1.
Check Your Specs
Find your machine’s rated Litres Per Minute (LPM) and PSI from its manual or label.
2.
Find Your Size
Use the chart to match your LPM and PSI to the correct orifice size number.
3.
Pick Your Angle
Choose the right color (spray angle) for the surface you’re cleaning. Now you’re ready!
Still need help? Get in touch
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