... 2.Driving mode:manual,gear drive,hydraulic 3.Gate structure:integral,expanded. PLATE GATE VALVE Feature in design :Comply with the requirement ... of styles,rising stem and non-rising stem,End connection type:Flange,thread,collar and butt welding,Driving mode:Manual,gear ... drive and hydraulic,Gate structure:Integral,expanded,The sealing face of gate and seat is overlaying –welded with ...