The new 7-horsepower Stihl RB 600 and 14-horsepower RB 800 gasoline-powered pressure washers produce operating pressures of 3,200 and 4,200 psi, respectively; maximum flow rates are 3.0 gpm and 4 gpm, respectively.
According to Stihl, the new models use commercial-grade Triplex pump components, including a brass manifold, stainless steel valves, and ceramic pistons. Both also feature an “easy-start” pump system, says Stihl, which allows the user to start the washer without difficulty by minimizing back pressure from the pump.
