valve actuator

valve actuator

A valve actuator is an actuator used to realize the automation of industrial valves. The use of valve actuator is very important to the technical process in factories. For example, the actuator can be used in power plants and refineries and so on. It plays an important role in automating the operation process. According to the various types, valve actuator can be operated by pneumatic power, hydraulic power or electric power.

During the operation, valve actuator has various functions. It can be used to realize the automatic switching, maintain the safe operation, control the process and identify the cause of a failure. The automatic switching can be realized by making the valve moving to the end position by the valve actuator after an operation command is received. During this process, torque seating plays an important role. It can ensure that the valve seal is tight. At the same time, the safety of operation can be effectively maintained, as the torque sealing can also prevent the valve from excessive torque. As what has been mentioned above that valve actuator can identify the cause of a failure, the operating data can be recorded. The analysis of the data can speculate the previous process of the operation. Thus, the cause of a possible accident can be analyzed.

Nowadays, more and more functions have been transferred from the DCS to the field devices because of the enlarging decentralization of automation technology and the introduction of micro processors. The design of valve actuator is also becoming more and more reasonable and scientific. What’s more, the clients can choose suitable models of the valve according to their own demands.