Requirements and solutions for pneumatic ball valve accessories

Pneumatic  ball valve refers to a valve that uses an air source to push the stroke of a pneumatic actuator and switch or adjust the ball valve; Pneumatic Ball Valves generally need to be equipped with more accessories, such as the THEOBORN Pneumatic Ball Valve commonly used in the project, and the general supporting pneumatic components include solenoid valves, limit switches, air source treatment triplets, and the adjustment type needs to be equipped with positioners; In the selection of these accessories, different working conditions require different solutions, and we will summarize and analyze.
In order to meet the different types of pipeline systems, it is necessary to select the corresponding pipeline system, and the following figure shows the selection principles and solutions of common imported Pneumatic Ball Valve pneumatic components.

The serial number of the requirements solution 
1 Ordinary type, in the event of a failure, the valve is held in place Double-acting Pneumatic Actuator, filter pressure reducing valve, solenoid valve, limit switch (through the different connections between the solenoid valve and the Pneumatic Actuator, the opening/closing requirements of the valve can be realized in the power-off state) 

2. Ordinary type, fault position on/fault position off, single-acting pneumatic head, filter pressure reducing valve, solenoid valve, limit switch 

3 Conform to NAMUR structural standards Pneumatic actuators, solenoid valves, and limit switches that conform to NAMUR interfaces are selected 

4. Manual operation function: Equipped with pneumatic hand wheel or hydraulic hand pump, etc 

5 Solenoid valve with manual operation Solenoid valve with manual function is selected

6. Rapid opening/closing of the valve Select a large-flow filter pressure reducing valve and solenoid valve, increase the diameter of the steel pipe, add a quick discharge valve 1 and a solenoid valve to control the large-diameter pneumatic Control Valve at the air outlet of the pneumatic head 

7. When the valve is opened and closed, it can be adjusted to add a regulating valve (needle valve) or damper 

8 No power or no power on site Replace the solenoid valve with an air Control Valve 

9. On-site explosion-proof, waterproof, anti-corrosion, etc. Select the corresponding level of pneumatic heads, solenoid valves, limit switches, connectors, etc 

10 valve/shut-off adjustable Positioner is used instead of solenoid valve and limit switch 

11. Double-acting cylinder realizes single-acting function and adds components such as gas tanks and pneumatic control valves 

12 On-site copper ban Do not use copper-containing  pneumatic  components, such as copper pipes, copper pipe joints, and copper solenoid valves 

13 Increase solenoid valve reliability Use two or more solenoid valves to control