Quality fixed everything! US Walker (WORK) imported electronic electric two-seater electric control valve is an electronic actuator and valve seat pass-through composition, within the actuator is equipped with a servo system, no need to reprovision the servo amplifier, the input 220V (AC) power supply and 4 ~ 20mA (DC) signal, you can control the valve opening, so as to continuously adjust the pressure of the medium, temperature, flow, level and other process parameters. The product has a sensitive, convenient energy access, signal transmission quickly, but also has unbalanced force, allowing the pressure, flow coefficient, which is widely used in electric power, metallurgy, chemical industry, textile industry, automatic control system works: Electric (single-seat, two-seater, the sleeve) control valve is the electronic control of the execution unit, it is one of the production process, the system automatically adjusts the important part, it AC220V power supply voltage for the action, to accept a unified standard signal 0 ~ 10mA DC or 4 ~ 20mA DC, this into the input signal corresponding to the vertical displacement of the valve is automatically manipulated to change the opening of the displacement of the valve, so as to achieve process piping automatically adjust the fluid medium such as pressure, flow, temperature, level and other parameters of control. When ordering, please provide the following information:? A nominal diameter (mm), nominal pressure (MPa), operating temperature range of two straight and before the pressure regulating valve, the valve pressure of 3 media name and status at 4 single seat??? valve supply voltage (220V or 380V, default 220V) 5 Input signal:??? 4-20mA, or 1-5V (default 4-20mA) 6 single-seat control valve body, the trim material requirements seven other special requirements (eg corrosion requirements, proof grade requirements, leakage class limits, etc.) USA Walker (WORK) Valves Chinese agents welcome your inquire and order!