Stainless steel pneumatic actuator single-acting (spring return) SA series: when using a single-acting actuator, first determine the torque of the valve, for steam or non-lubricating medium, increase the safety value by 25%; non-lubricating dry gas medium The safety value increases by 60% %; The safety value of granular powder medium conveyed by non-lubricating gas is increased by 100%; for clean and frictionless lubricating medium, the safety value is increased by 20%, and then consult the torque table of single-acting pneumatic actuators. First check the spring return end point, then check the air source working pressure end point. The pressure torque of the air source should be greater than the spring return torque to obtain an accurate model of the SA series pneumatic actuator. Double-acting DA series of stainless steel pneumatic actuator: When using double-acting pneumatic actuator, the torque of the valve should be determined first, and the safety value of steam or non-lubricating medium should be increased by 30%; the safety value of non-lubricating dry gas medium should be increased by 50%; The safety value of granular powder medium conveyed by lubricating gas is increased by 100%; for clean and frictionless lubricating medium, the safety value is increased by 20%, and then according to the working pressure of the air source, consult the torque table of double-acting pneumatic actuators to obtain DA series pneumatic actuators The exact model number of the institution.
In the single-acting SA series output torque table, the spring-return "0°" torque is the torque that closes the valve, and the spring-return "90°" torque is the torque that opens the valve. The torque corresponding to the supply pressure "0° is the torque to close the valve, and the torque of the supply pressure "90° is the torque to open the valve.
