This product is suitable for the temperature of 120 ℃ or less and nominal pressure of 1.6 MPa or less food, medicine, chemical, petroleum, electric power, metallurgy, urban construction, textile, paper and other fluid medium for adjusting flow rate and the closure on the pipeline. Using small electric actuators, reliable quality, light weight, 1/3 of the prices for the same industry electric actuators, the key recommendation is the national ministry of construction automation field of fluid control products.