Butterfly Valve Gear Boxes has cast iron body, stem and sealing seats are made of stainless steel. Lowering the minimum torque force allows the opening and closing of the valve by a single operator. While the open-close torque of the valve with gearbox decreases, the number of turns needed to open-close the valve increase. Attention should be paid on the connection dimensions and gearbox ratio when selecting an actuator for the valve. The DN dimensions and gearbox types mentioned on the table are given according to the general applications. It is advised to receive support from FAF Valve technical staff while selecting gearboxes. Most of the valves require an operator torque that can only be achieved with a gearbox. There are part-turn and quart turn manual actuators.

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