VEVOR Gas Pressure Washer Gas Powered Washer 4400 PSI 4.0 GPM 390cc 5 NozzlesProduct Features 4400 PSI High pressure The gas power washer is a powerhouse with a 4400 PSI pressure and 4. 0 GPM flow rate. It's perfect for removing tough stains, especially from brick patios covered in years of dirt and moss, and oil or rust stained concrete driveways. If you don't have access to a power outlet, a gas pressure washer is your go to tool. Efficient 15 HP Engine The gas powered pressure washer has a powerful 390cc 4 spoke engine and