The device is a manual device directly installed on some rotary valves such as ball valve,butterfly valve,plug valve,hemispherical valve and rotary ball valve.The device adopts the structure of worm gear and spur gear reducer,with large output torque,low noise and stable operation.The protection grade of conventional products is IP65.Under special circumstances,it can be used as IP67,IP68 or submerged underwater.Hand wheel,valve connecting plate andshaft hole can be customized according to user's needs.The product can switch two speed ratios at will.When opening and closing the valve,you can use the high speed ratio to output high torque to open and close the valve.When the valve pressure is removed,you can use the low speed ratio to operate the valve quickly.The number of opening and closing turns can be adjusted in combination with different valve requirements.
