For sale is a Graco Husky Model 515 Air Operated Double Diaphragm Pump. 15 Gallons per minute maximum flow rate. 100 PSI Maximum operating air pressure. (2) Available. (1) Is tagged: Series D01D. (1) Is tagged: Series K01D. NOTE: I will remove any outboard pipe that is not part of the pump before shipping. It has a colored liquid inside that was used like plastidip.