What is the difference between pneumatic valve and electric valve,what are their advantages and disadvantages,which are more suitable for use in what occasions,this paper will introduce you.

Electric gate valve is a kind of valve with linear motion.It is matched with Z-type multi rotary actuator,including switch type and intelligent type.This valve is easy to operate and is one of the most common open and close valves.It uses the upper and lower work of the gate to connect and shut off the fluid medium in the pipeline.It is widely used in electric power,metallurgy,petroleum,chemical industry,papermaking,sewage treatment and other departments.

Pneumatic gate valve is a double-layer cylinder with pneumatic actuator,buffer mechanism,manual and its protection mechanism.Compared with single cylinder pneumatic gate valve,the lifting force of the valve is doubled.This fundamentally solves the problem that some valve bodies of single cylinder pneumatic gate valves can not be opened due to wedging.

Understand the difference between electric valve and pneumatic valve

Difference between electric valve and pneumatic valve:

1.The action force distance of the pneumatic valve is larger than that of the electric valve.The opening and closing speed of the pneumatic valve can be adjusted.The structure is simple and easy to maintain.Due to the buffer characteristics of the gas itself,it is not easy to be damaged due to jamming.However,there must be air source and its control system is more complex than that of the electric valve.Pneumatic valves are sensitive,safe and reliable.Many factories with high control requirements set up compressed air stations for pneumatic instrument control elements.The power source of the pneumatic valve actuator is the air source,and the air source is from the air compressor.The electronic control signal is converted into the pneumatic control signal by the positioner to drive the pneumatic actuator to adjust the valve position.

2.The power source of the electric valve actuator is the power supply.If the circuit board or motor fails,it is easy to spark.Therefore,it is generally used in the occasions with low environmental requirements and no danger.Compared with the regulation performance of the pneumatic actuator and the electric actuator,the pneumatic actuator has faster response speed and can be more suitable for application in the regulation condition.Therefore,the manufacturers of the control valve are all born at the same time Pneumatic actuator is matched with it.

3.The adjustment response speed of electric actuator is not fast enough,and pneumatic actuator on control valve is more applied than electric actuator.

4.The essential difference between electric valve and pneumatic valve lies in the use of different driving device,that is,the actuator,while the regulating valve itself has no difference.Matching with different actuators is mainly working condition requirements,such as chemical industry and other occasions requiring explosion-proof,pneumatic valve is most used because of high safety requirements and low price.With intelligent positioner,it can be connected to bus,and the control mode is simple.