... :BS,DIN,JIS,,ASE,ASD,BS10D, Driving Style:Lever,gear Description:Lug Type Butterfly Valves are mainly used to control the flow of liquids ... products are with an infinite positioning/locking handle as an option on valve sizes 50mm – 300mm. Manual and worm-gear operators are available ... to contact us for business cooperation and visit our company. Lug Type Butterfly valve