Graco Husky 515 air-operated double diaphragm pumps come in 12.7mm (1/2 inch) porting size and can operate on as little as 7 bar. The pumps feature a stall-free low pulsation air valve, providing a smooth and rapid changeover. The bolt-through fluid cover design eliminates leaks, making the Husky 515 safer and more reliable than other AODDs. Husky 515 pumps are available in different materials of construction, including polypropylene, acetal and PVDF construction to suit various working fluids.