Pneumatic control valve is mainly composed of pneumatic actuators and control valves. It is one of the industrial process control instruments such as petrochemical and metallurgy. Under what circumstances does a pneumatic control valve need to be equipped with a positioner?
What are the common troubleshooting of pneumatic control valve?
Valve positioner is one of the main accessories of pneumatic actuators. It is usually used together with pneumatic actuators to improve the positioning accuracy of pneumatic control valves, overcome the influence of valve stem friction and medium imbalance to a certain extent, and ensure pneumatic control valves. achieve correct positioning. So, you know, under what circumstances does a pneumatic control valve need to be equipped with a valve positioner?
1. The pressure of the medium is high and the pressure difference is large;
2. When the nominal diameter of the pneumatic control valve is greater than 100;
3. Low temperature or high temperature regulating valve;
4. When you want to increase the action speed of the pneumatic control valve;
5. When using standard signals to operate non-standard spring actuators;
6. When used for split-range control;
7. When making the pneumatic control valve realize the reverse action;
8. When changing the flow characteristics of the pneumatic control valve;
9. When proportional action is required.
To sum up, when customers need to look for a valve positioner, there are many brands that can be considered, but due to the impact of the COVID-19 epidemic, most brands are now very long in delivery and cannot deliver orders. In this case, KOSO positioner with very competitive price and the delivery time is quite short, which is your first choice now.
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