... DN40--DN 4000mm with the drive mode as manual,electric,worm drive,pneumatic and eletrohydraulic The Leading environment ... Gate Valve Widely used in mining, metallurgy, building materials, electric power and other industries. The main technical parametersNominal diameter ... / s Suitable medium Dry dust Suitable temperature ≤ 350 °C Driven approach Electro-hydraulic, pneumatic, electric, manual