Multiple actuators with different outputs are available so that they can be selected according to their nominal diameters and fluid pressure.
In addition to cost and reduced air consumption, this product has the advantage of being more compact.

Supplement:
The difference in the output power means that the size of the actuator itself is different.
The diaphragm life may be shortened due to excessive load on the diaphragm, depending on the model, as well as excessive cost when selecting a high output actuator for low fluid pressure.
Conversely, when selecting a actuator with a small output for a high fluid pressure, there is a possibility that the fluid cannot be closed. Select a actuator suitable for the fluid pressure.