A pressure washer must have a minimum garden hose length of 7.5 meters, and you cannot use Aquastop.
A single-phase pressure washer consumes between 300-700 liters of water per hour.
A regular garden hose with normal pressure normally delivers much more than this.
The water consumption of different AVA models can be found in the table:
For example; if you have a P80, fill a regular 10-liter bucket with water. How long does it take?
P80 takes 60 seconds to empty the bucket.
A water hose/garden hose is usually ½” (12mm). A hose of this diameter provides ample water under normal conditions. If you have particularly low pressure, the pressure washer will work well for a while, and then run out of water. By releasing the trigger and pressing it again, you will be able to spray for a while before running out again.
If this happens so often that it is perceived as inefficient, you can use a bucket/can to have a water buffer. Put the garden hose in the bucket, and use a suction hose to the pressure washer.
A thicker hose can provide a larger water reserve in itself but does not change the capacity of the plumbing system.
Our pressure washers should not have more than 7 bar in, and most homes with higher pressure than 6 bar have a reduction valve, partly because washing machines/dishwashers and the like have a maximum limit of 6.4 bar.