In the production process, the control system puts forward all kinds of special requirements for the valves. Therefore, the control valves must be equipped with various accessories (for short) to meet the needs of the production process. The accessories for the control valve include:

1, the valve positioner is used to improve the operating characteristics of the control valve regulation performance, and to realize the correct positioning.

2, the valve position switch shows the working position of the upper and lower limit of the valve.

3. When the gas source of the control valve is malfunction, the valve is in the position of opening before the failure of the gas source.

4, the solenoid valve realizes the electromagnetic switching of the gas path to ensure that the valve is in the desired safe opening position when the valve is broken down.

5. When the controller of the control system fails, the handwheel mechanism can switch to the manual operation valve.

6, the pneumatic relay accelerates the action of the actuator and reduces the transmission time.

7. The air filter pressure relief valve is used to purify the gas source and adjust the air pressure.

8. The gas tank ensures that when the gas source is malfunction, the non spring cylinder piston actuator can move the control valve to the safe position of the fault. The size of the cylinder depends on the size of the cylinder, the requirement of the action time of the valve and the working conditions of the valve, etc.

In a word, the function of the accessories is to make the function of the control valve more perfect, more reasonable and more complete.

In the production process, the control system puts forward all kinds of special requirements for the valves. Therefore, the control valves must be equipped with various accessories (for short) to meet the needs of the production process. The accessories for the control valve include:

1, the valve positioner is used to improve the operating characteristics of the control valve regulation performance, and to realize the correct positioning.

2, the valve position switch shows the working position of the upper and lower limit of the valve.

3. When the gas source of the control valve is malfunction, the valve is in the position of opening before the failure of the gas source.

4, the solenoid valve realizes the electromagnetic switching of the gas path to ensure that the valve is in the desired safe opening position when the valve is broken down.

5. When the controller of the control system fails, the handwheel mechanism can switch to the manual operation valve.

6, the pneumatic relay accelerates the action of the actuator and reduces the transmission time.

7. The air filter pressure relief valve is used to purify the gas source and adjust the air pressure.

8. The gas tank ensures that when the gas source is malfunction, the non spring cylinder piston actuator can move the control valve to the safe position of the fault. The size of the cylinder depends on the size of the cylinder, the requirement of the action time of the valve and the working conditions of the valve, etc.

In a word, the function of the accessories is to make the function of the control valve more perfect, more reasonable and more complete.