Excuse me, which is more widely used, electric control valve or pneumatic control valve?

In addition to the characteristics of high reliability, full function and ultra-light, the electric control valve also has the following advantages:

(1) power supply is convenient and economical, which saves a series of expenses for establishing gas source stations;

(2) The complicated way of "pneumatic valve+electric valve] positioner+air source" not only increases the cost, but also brings about the decline of reliability (the more links, the more factors with poor reliability);

(3) From an economic point of view, in addition to saving the cost of the gas source station, the cost of the electric valve positioner is also saved:-A good imported electric valve positioner is usually more than 5000 ~ 6000 yuan, and a better one is 8000 ~! 10000, and this price can basically be repurchased. The above highly reliable electronic actuator;

(4) The number of links is reduced, and the maintenance workload is correspondingly reduced.

Disadvantages of electric control valve compared with pneumatic control valve:

Electric regulating valve is not without its disadvantages: the internal heat generated by motor operation will lead to thermal protection and make the regulating valve stop working; Because the motor must go through multi-stage deceleration to output torque, the running speed is not very fast, which is not suitable for some occasions that need rapid opening and closing. The contradiction between high torque and high speed is still difficult to solve. Because there are many moving parts, it is relatively easy to cause faults, especially under the condition of frequent adjustment, which is easy to cause motor thermal protection, reduction gear damage, module SCR burning and other faults. Under this working condition, it is more appropriate to choose pneumatic control valve.