Product Description LQ series partial rotary valve [door] electric device is a replacement product of our company. Suitable for valves that rotate 90 °, such as butterfly valves, ball valves, plug valves, and air doors. Used for valve opening, closing, or adjustment control, it can be remotely controlled or operated on-site. Widely used in industries such as electricity, metallurgy, petroleum, chemicals, food, textiles, paper making, pharmaceutic...