1. Materials: Carbon steel, stainless steel;
2. Different size from 200x200mm to 600x600mm;
3. There is manual, electric and pneumatic actuators.
It is an ideal equipment to control dust material flow. It is mainly composed of frame, screw nut, hand wheel, chain wheel, disc, turn the handwheel(chain), screw with the screw nut and damper for the reciprocating movement of horizontal direction, opening and closing of the valve.