These solid cast iron compressor pumps are designed for rugged applications such as industrial air demands and construction. Choices include portable or stationary compressors and engine preference for convenience. Shown is a portable 6 HP Briggs & Stratton® gas driven engine unit delivering 9.0 CFM@100 PSI on a 20 gallon tank. Gardner Denver 1800 Gardner Expy. Quincy, IL, 62305