Selection of Rack And Pinion Pneumatic Actuator Double-acting DA series: When using a 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 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 double-acting pneumatic actuator according to the working pressure of the air source to obtain DA The exact model of the series of pneumatic actuators.
Selection of Rack And Pinion 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 safety The value is increased by 60%; the safety value of granular powder media conveyed by non-lubricating gas is increased by 100%; for clean and frictionless lubricating media, 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.
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.
