What is steam pressure washing?
Pressure Washers, Jet Washers, or High-Pressure Cleaners (HPC’s) as they are known in the trade, are a useful tool for all sorts of cleaning tasks around the home. Many accessories are available to extend the scope of the basic machine. This FAQ deals primarily with domestic or DIY high-pressure cleaners. The pressure developed is only one part of the equation. A high-pressure cleaner’s ability to clean depends upon a combination of pressure (measured in bar) and flow rate (in litres per minute). Both are equally important. Beware the figures quoted in the adverts or printed on the box! They will invariably only quote pressure and then often in an exaggerated form. “Maximum Pressure 120 Bar” often means that the safety valve will open at 120 bar to protect the pump. You might find the flow-rate printed on the machine label. The working pressure will be well below that. Commonly a machine that is advertised as 120 bar would actually have a working pressure of around 90 bar. The flow rat
