What is an Orifice Size?
An orifice is the tiny opening that controls how much water flows through your nozzle or foam cannon. It determines both the volume (measured in litres per minute) and pressure (PSI) of water passing through your system.
Different spray angles serve specific purposes in your cleaning routine:
0° (Red): Concentrated jet for stubborn dirt and grime - use with caution on delicate surfaces.
15° (Yellow): Heavy-duty cleaning for driveways, patios, and tough stains.
25° (Green): General-purpose cleaning for most surfaces, including cars, fences, and walls.
40° (White): Wide, gentle spray perfect for rinsing and delicate surfaces.
Vario Nozzle: Gives the ability to adjust the water spray angle.
Choosing the Right Orifice for Your Machine
Different Pressure Washer Brands/Sizes use different Orifice sizes.
For example, Karcher K2, K3, K4 mainly use a 030 orifice size nozzle as this pressure washer are a Lower-Flow electric models.
Where as Petrol machines, such as, Kranzle would use a 040 orifice size nozzle as this pressure washer has a higher flow rate.
Using an undersized orifice sized nozzle could lead to problems like excessive pressure & pulsing issues.
Always consult your user manual or manufacturer's sizing chart for the most accurate recommendations for your specific model.
Our pressure washer models also use different size nozzles,
Our B5, Grey 7 & Grey 10 use a nozzle orifice size of 035 where as our B9 V2 uses an orifice size of 040.
So YES the correct orifice size does matter.
By choosing the correct orifice for your PSI/GPM range - and maintaining it regularly - you ensure better cleaning results, less machine wear, and a smoother wash process.
To maintain performance of the nozzle:
Flush thoroughly with clean water after every washing session.
Inspect nozzles monthly for limescale buildup or wear.
Use proper pin cleaners.