COVNA Actuator In The Chemical System

A valve can be operated through a series of drive mechanisms classified according to the mode of operation: manually or automatically. Manual type operators can be steering wheel, chain, gearbox and lever. The automatic type consists of an actuator that is activated by a pneumatic or electrical medium.

What Is An Actuator Valve?

It is a device used to control and facilitate the operation of the valves. It can be electric actuator valves or pneumatic actuator valves. This type of equipment can be operated remotely or local mode. For proper operation, in the industry in general, the designer specifies the number of parameters, such as type of service, installation site (weather requirements), opening and closing speed, line pressure, maximum differential pressure, temperature, pressure and operating fluid, voltage type – phase – frequency, air or gas pressure for pneumatic pressure actuators. For an electric actuator, it must be specified: AC or DC voltage, number of phases, and motor type. In addition, the position indicator must be specified.

In the chemical, petrochemical, oil and gas, and pharmaceutical industries, among others. It is generally recommended to use actuator in the following cases:

  • When the valve location makes it difficult to operate or remote valve operation is required.
  • When the frequency of use of the valve is high.
  • When the operating torque of the valve does not allow its operation manually.
  • Where the valve’s operating conditions present a risk to operators.

For each case, COVNA valve has a wide variety of actuators specially designed for your process needs.