Home / Markets / WEAVALVES / Products / Valves / Valves / Butterfly / Manual Manual Quarter-turn butterfly valves available with manual hand lever or hand wheel actuators. Steel and plastic models. Manual gear operators and SAE valves. Series SAE Low Cost, S.A.E. Flange, Hydraulic Reservoir Shut Off ValveButterfly Valve is an ideal low cost hydraulic reservoir shut off valve. Designed to meet the demanding needs of the fluid power industry. Features include an O-ring flange face seal.