If an independent power source is needed which is not constrained by the electrical supply then a diesel or petrol engine model is the answer. This type of pressure washer can be more powerful than electric machines and is ideal for off site work. These machines are often mounted in a tubular steel frame for robustness.
Superheated dry vapor The Dupray ONE™ steam cleaner produces the perfect steam. Its stainless steel boiler is pressurized to 4 times the atmospheric pressure to increase the boiling point of water to 293ºF / 145ºC. The high-density heating element then superheats the steam to 303°F / 150°C resulting in a low-moisture vapor steam with only 5% water content. Steam at this level is an ideal combination of water content temperature and pressure.
Fuel Tank/Fuel Consumption (Hot Water Versions)