What are control valves?

control valves are tools that regulate fluid or gas flow. The valves open either partially or fully or close in a similar way to handle the amount of liquid or gas that allow to pass from one place to another. The valves are used in industrial processes to control volume, speed, pressure or other similar values ​​of fluid or gas in a given process or group of processes. The control valves used in these systems must operate in accordance with the plant's processes. Some industrial control valves are mechanical and are operated with a handle, pedal or lever. These are simple valves on the valves that operate similarly to the taps on hot and cold water on the consumer faucet.

Automatic control valves are controlled by a computer, pneumatic or hydraulic process. Sensors and checkpoints Cross the industrial process determine the speed or temperature at a certain point in the process. Based on the measurement of the set sensorY calculates the process controller what actions need to be performed to keep the process aligned. The process controller tells the control valve, how much and in what direction to move.

depending on the type of control valve installed at a given point in the industrial process, the process controller either sends the instruction directly to the valve or to the process that causes the valve to move appropriately. The electrical control valve is provided directly using the industrial process control. The pneumatic valve is generally informed through a separate process that the valve must move in one or the other. This process will then release the compressed air to move the pneumatic valve adequately. Hydraulic valve is informed in a similar way that movement is necessary, but more fluid than compressed air causes the control valve to move according to the instructions.

petroleum and gas pipes in their sighThe control valves are widely used. These valves can be simple mechanical valves for operations available to employees on site to start or end a specific process. Some applications may require an automated valve where the remote system controls the amount of natural gas passing from one point in the system to the other. For safety purposes, additional valves could still be installed and automatic pressure shutdown to the event exceeds the set point.