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Book Assessment
A Reference You Can Use When Looking For A Manual Valve Actuator

A valve actuator is a mechanical component used in many types of equipment and machinery, such as valves, pumps, motors and car engines. In cars, valve actuators, such as the manual valve actuators, are used to close and open valves of free valve engines or camless engines. As its name suggests, the valve actuator is responsible for providing the power to operate a valve, and move it to the preferred or desired location. Basically, it applies by converting energy into motion. In this case, the energy can be made through liquid, electricity, air or manual power.

There are four common types of valve actuators available on the market today, namely the pneumatic, electric, hydraulic and manual valve actuators. Apparently, these valve actuators vary in the source of power used. As a consumer and car owner, it is vital for you know the functions and feature of each type of valve actuator, so you can figure out which actuator is best for your vehicle.


Pneumatic valve actuators are components that control a valve by transforming air pressure into a linear or rotary motion. This motion is usually performed through the force of springs and air. The actuator practically manipulates the valves by converting motion through a piece of machinery. As an actuator, it forces the spring to close by increasing air pressure and overcoming the resistance. When the spring valve is open, however, it won’t have any air pressure.


Unlike other valve actuators, manual valve actuators do not need any external power source. To facilitate movement, manual valve actuators employ mechanical objects, such as wheels, gears, levers and a series of gears. Manual valve actuators are, for the most part, used for smaller equipment and valves. Practically, these valve actuators are ideal for cars with camless engines.


An electric valve actuator is obviously an actuator that uses electricity to operate. Basically, it uses direct current, or a three-phase or single alternating current to supply power to the gears. Once the gears are supplied with electricity, the valve will regulate as well as generate the flow levels desired to complete the task. Normally, these valve actuators are used in pieces of equipment that need multi-turn valves, such as globe or gate valves. To ensure safe operation, a manual valve usually comes with a battery backup. 


Hydraulic actuator valves are capable of operating without using a whole lot of mechanical parts. Basically, these valve actuators use fluids to pressure the pistons used in the mechanical operation. Since these actuators use a vast amount of water to create power, hydraulic valve actuators are commonly used in dams and nuclear power plants. In some cases, though, they are used in cars, specifically the ones with free valve engines.

A quick tip

To ensure quality from your valve actuator, make sure to buy a valve actuator that comes with an ISO certification. Valve actuators with ISO certifications come with sophisticated designs, and are made out of superior materials. Aside ensuring quality, this will also guarantee that the product is safe to use. 

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