Maybe, but it is dangerous for the high pressure pump. It is a general rule of thumb that ALL high pressure pumps be fed by a low
pressure supply slightly greater in volume than the max capacity of the high pressure pump to prevent damaging cavitations at the
high pressure pump inlet.
Steve

"Steve B" wrote in message ...
Does a power washer have to have pressurized water on the inlet, or will it draw from a tank source?

Steve