Compressed air from the compressor is stored in an air tank and then fed through a pipeline system to the necessary areas of the plant. A pneumatic actuator (for example, an air cylinder) converts the energy from this compressed air into motion. The motion can be rotary or linear, depending on the type of actuator.
Advantages
1) Higher actuation speed than an electric actuator.
2) Actuation speed can be adjusted as desired using a controller.
3) Can be used as an emergency shutoff or release valve. (Single acting type; spring return type)
4) Can be used for valves that require frequent opening / closing.
5) Simple configuration makes it easy to maintain.
6) Output power changeable by changing the supplied air pressure. (Double acting type only)
7) Can also be used for slot ring control (flow control).
8)Can be used as-is (without explosion-proof requirement) even in an area where an explosion-proof actuator is required by law.
Disadvantages
1) Additional cost for dust/moisture removing dryer or dust filter is required because instrument air is used.
2) Response speed becomes slower (due to the compression of air) where the actuator is significantly distant from the supply air source.
3) A larger size actuator is required to obtain high output power.
4) Actuation is affected by fluctuation in air pressure and flow rate.
1) Single piston configuration
2) Flexible modification available
3) Valve mounting parts are compatible with EX Series
electric actuators
4) In-house manufacturing
5) Valve mounting dimensions are compliant with ISO5211 and
accessories mounting dimensions are compliant with NAMUR guidelines.
6) Various sizes are available to meet a variety of valve bore diameters,
10A to 200A (10K).
Single piston configuration
Force is loaded onto a solid piston.
Force is loaded onto two pistons individually.
The piston works smoothly, because its central axis is coaxial with the rack and pinion axis.
The piston is inclined although it works, because its central axis is not coaxial with the rack and pinion axis.
Flexible modification
Modifications to the actuator configuration that were previously troublesome can now be carried out with ease.
The F Series actuators' design is more flexible than ever, allowing customers to easily modify their configuration and / or functions as needed. Flexible modifications can be used in the following situations.
♦When you want to change the mounting direction of the actuator after the pipe arrangement is completed.
♦When you want to add pneumatic equipment.
♦When you want to change the actuating direction when the air supply is cut off.
♦When you want to add sensors to detect valve operating conditions after you have started using the equipment.
♦When you want to add other actuators for automation after you have started using the equipment.
↓Change of the actuating direction when air supply is cut off
Installation of accessories
↓Change of the mounting direction of the actuator