Selection Of Double Acting Actuator:

The suggested safety factor for double acting actuators under normal working conditions is 20%~30%.

Example:

• The torque needed by valve=100Nm.
• The torque considered safety factor (1+30%)=130Nm
• Air Supply=5bar
• According the below table, we can choose the minimum model is AT160DA.
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• Output Torque Of Double Acting Actuators:

Selection Of Single Acting Actuator:

The suggested safety factor for spring return actuator under normal working conditions is 30%~50%.

Example:

• The torque needed by valve=80Nm
• The torque consider safety factor=80(1+30%)=104Nm
• Air Supply=5bar
• According to the below table, we find output torque of AT140SR K7 is:
• Air stroke 0°=308Nm
• Air stroke 90°=247Nm
• Spring stroke 0°=120Nm
• Spring stroke 90°=181Nm
• All the output torque is large than we needed.
• Output Torque Of Spring Return Actuators:

If you have any doubts about the selection of pneumatic actuator, please do not hesitate to ask for help from us!