A combination of pressure, measured in pounds per square inch (psi), and flow, measured in gallons per minute (gpm). Higher pressure results in better cleaning of a given surface; coupled with a ...
Designed for indoor cleaning, two new Karcher all-electric, hot water pressure washers provide water flows ranging from 3.5 to 4.2 gpm and pressures ranging from 2,000 to 3,000 psi. Both models ...