History of Pressure washers
The hot-water high-pressure washer was invented by Alfred Kärcher in 1950,[1] but Frank Ofeldt in the United States claimed to have invented the steam pressure washer or "high-pressure Jenny" in 1927.[2][3] The basic pressure washer consists of a motor (either electric, internal combustion, pneumatic or hydraulic) that drives a high-pressure water pump, a high-pressure hose and a trigger gun-style switch. Just as a garden hose nozzle is used to increase the velocity of water, a best generac pressure washer creates high pressure and velocity. The pump cannot draw more water from the pipe to which the washer is connected than that source can provide: the water supply must be adequate for the machine connected to it, as water starvation leads to cavitation damage of the pump elements. Different types of nozzles are available for different applications. Some nozzles create a water jet that is in a triangular plane (fan pattern), others emit a thin jet of water that spirals