Graco DF3666 Husky 2150 AL AODD Metal Pump with NPT Standard Air Valve, SP Seat, SP Ball, & SP DiaphragmThe Husky 2150 air operated diaphragm pump features a stall free low pulsation air valve which provides a smooth and rapid changeover. Overall improved efficiency (up to 40% more efficient) Highest fluid flow rate in its class Up to 5 times longer diaphragm life compared to other air operated diaphragm pumps Expanded material offering to handle endless applications Fewer parts than industry peers, the air valve is externally accessible so it can be