1. Operating torque: Operating torque is the most important parameter for selecting valve electric device. The output torque of the electric device should be 1.2 to 1.5 times the maximum torque of the valve operation.
2. Operating thrust: There are two main structures of the valve electric device, one is not equipped with a thrust plate, and the torque is directly output at this time; the other is equipped with a thrust plate, and the output torque is passed through the valve stem nut in the thrust plate. Converted to output thrust.
3. The number of rotations of the output shaft: the number of rotations of the output shaft of the valve electric device is related to the nominal diameter of the valve, the pitch of the valve stem, and the number of thread heads, and is calculated according to M=H/ZS (where M is the electric device should meet The total number of turns; H is the opening height of the valve, mm; S is the thread pitch of the stem drive thread, mm; Z is the number of stem thread heads.)
