A combination of pressure, measured in pounds per square inch (psi), and flow, measured in gallons per minute (gpm ... About The Simpson CM61227 is part of the Pressure Washers test program ...

The BOCOM 24 Inch Pressure Washer Surface Cleaner features 4 universal castors ... Generac, and SIMPSON. Look for a model with a high PSI and GPM rating, as well as a durable build and easy ...

James recommends the Simpson PowerShot 4400 PSI Gas Pressure Washer from Amazon. He says, "Its 4.0 GPM (gallons per minute) output provides exceptional cleaning power. This high pressure and flow ...

This gas pressure washer from Simpson blasts 4400 PSI of water at 4 GPM for your most difficult areas – such as a stained concrete driveway that hasn’t been cleaned in decades (if ever).