GPW-1000-P-50 Air Powered Hi-Pressure Washer The unique GPW-1000-P Air Powered Hi-Pressure Washer can be used safely in all areas. It is ideal for applications where electric or gasoline powered units are prohibited due to hazardous conditions such as in refineries, and chemical, paint and nuclear plants. GPW-1000P-50 Air Powered Hi-Pressure Washer. This Manual is restricted to verified Goodway customers only Follow the directions below to access this manual. Sign-in or register a new account with Goodway.com