electric regulating valve

NegotiableUpdate on 01/04

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

Electric control valves are composed of a combination of electric actuators and control valves, which are mechanically connected, assembled, debugged, and installed. They are widely used in industrial automation systems such as power, chemical, metallurgical, environmental protection, water treatment, light industry, and building materials.

Product Details

electric regulating valveThe main components

Part materials: valve body, valve cover, packing gland, valve stem, valve disc, sealing ring, indicator mark, valve stem nut, nut sleeve

Materials: gray cast iron, cast steel, stainless steel, brass

working principle

Working power supply: DC24V, AC220V, AC380V and other voltage levels.

Input control signal: DC4-20mA or DC1-5V.

Feedback control signal: DC4-20mA (load resistance below 500 ohms)

By receiving signals from industrial automation control systems (such as 4-20mA), the valve is driven to change the cross-sectional area between the valve core and seat to control process parameters such as flow rate, temperature, and pressure of the pipeline medium. Implement automated adjustment function.

new-typeelectric regulating valveThe actuator contains feeding and clothing functions, accepts unified 4-20mA or 1-5V · DC standard signals, converts current signals into corresponding linear displacements, automatically controls the opening of the regulating valve, and achieves continuous adjustment of process parameters such as pressure, flow rate, temperature, and liquid level of the fluid in the pipeline.

flow characteristics

electric regulating valveThe flow characteristic of is that the medium flows through the valve under the condition that the pressure difference between the two ends remains constantelectric regulating valveThe relationship between the relative flow rate and its opening.

electric regulating valveThere are three types of traffic characteristics: linear characteristics, equal percentage characteristics, and parabolic characteristics.

electric regulating valveofinstall

electric regulating valveThe most suitable installation is to place the upper end of the working piston at the lower part of the horizontal pipeline. The temperature sensor can be installed at any position, and the entire length must be immersed in the controlled medium.

electric regulating valveGenerally, it includes a driver that receives driver signals (0-10V or 4-20mA) to control the valve for regulation. It can also form an intelligent network control system according to control needs to optimize control and achieve remote monitoring.

Electrical principle

Action principle: The motor power supply is 220VAC or 380VAC, and the control signal is 4-20mA. There is a controller inside the valve, which converts the current signal into the angular stroke signal of the stepper motor. The motor rotates, and the valve stem is driven to operate by gears, levers, or gear plus levers, achieving linear or angular stroke

Feedback: The motor runs through gears, and the positioning signal of the valve is output by a sliding variable resistor with three joints. In addition, there are limit signals from three wires (fully open, fully closed, common wire)