Valve in the automatic control system should

The rapid development of automation and control, makes the valve in the automatic control system more widely. In recent years, metallurgy. Cement, building materials and other industries ventilation and dust removal system media flow regulation, they use  Instrument valve manifolds  valve. Its basic principle is: the set of physical sensors on the pipeline, the detected physical quantity by digital / analog  Instrument manifolds , into the electric actuator, electric actuator compare this signal amplified to drive two-phase servo motor rotation, automatic actuation of the valve on or off at an angle, complete medium flow control. Because the system automatically adjusts the valve or pipeline design in some areas is not reasonable, during operation, a number of valves, especially large diameter valves failure often occurs in varying degrees, of which the highest failure rate when the number of servo motor damage.