Valve Actuators & its Types

If you are not familiar with what a valve actuator is, they are items that are utilized to situate valve pieces, and also to fully activate or close a valve piece. They are most useful in areas where precise control of a valve is needed, those cases often being where you would need to manage the flow of fuel to something like a gas turbine. To manage and regulate such flow, you can use a variety of different valve actuators. In this article, we will go over common valve actuators.

For most valve actuators, they can regularly be used for easing the automation process, positioning valves that require large amounts of torque to operate, and for prompting the mechanism flow of systems designed to shield staff and equipment form harmful surroundings,Additionally, they can also be used for manipulating operations where there is an impractical or impossible. As for other types of valve actuators, there are several that you can find including an electrical actuator which includes a motor that is electrical and a solenoid-actuated valves. You can also find one with electric motors that can be applied to close and open or situate a valve by hand or by way of having it automated. For electrical actuators, the motors work in either direction so as to propel the valve stem using gear couplings. Solenoid valves use electric power to attract a magnetic slug attached to the valve stem and are used in automatic open-close applications.

There are several benefits to having electric actuators which include but are not limited to the lack of a need for pressurized air or fluid, its usefulness in situations where a cold temperature can result in freezing of condensation in air supply lines. Not only that but they are able to generate a high degree of torque force and can also be consistent in terms of its operating speed. Another advantage is that they are significantly easier to route than most other actuators. However along with these benefits, there are many cons and those include cost and simplicity. Electrical actuators can be more complex than other types of actuators and operate with slower comparative operation speeds. Not only that but they can be a fire hazard and are more vulnerable to losing power than its counterparts.

Other actuators that are worth investing into are pneumatic actuators. Because of its makeup, high reliability, and affordability, pneumatic diaphragm actuators are preferred in many industrial sectors and are frequently utilized to control cooling water flow in power plants. Pneumatic actuators are often designed to supply automatic or semi-automatic valve operation, and are the most common types that are in use because of their dependability and simplicity of design. Pneumatic actuators have many pros including a quick stroke speed, low potential for fire hazards, and a significant factor: cost. Pneumatic actuators are much more affordable than their competition. The disadvantages of pneumatic actuators, however, consist of a slower and worse degree in performance, bad compressibility of air, that can result in inconsistent speeds of shaft movement. Along with this, they are also difficult to control unless they are fully open or shut

For more information on valve actuators or if you are interested in purchasing one, get in touch with us today! At NSN Unlimited, owned and operated by ASAP Semiconductor, we can help you find all the unique parts for the aerospace, civil aviation, and defense industries. We’re always available and ready to help you find all the parts and equipment you need, 24/7-365. For a quick and competitive quote, email us at or call us at (714) 705-4780.


February 15, 2021


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