... 2.Driving mode:manual,gear drive,hydraulic 3.Gate structure:integral,expanded. PLATE GATE VALVE Feature in design :Comply with the requirement ... of API SPEC 6A,Valve structure includes both 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: ...