Food grade and sanitary manual butterfly valves meet applicable 3-A or NSF (National Sanitation Foundation) 51 standards for use with dairy or food and beverage products. These valves start, stop, and throttle media flow within a system. They can be set to fully open, fully closed, or intermediate positions by hand with a lever or handwheel. These valves are compact, lightweight, and have a slim profile that minimizes pressure drops and ensures efficient flow.