What are the criteria for selecting the right valve actuator?

Correct Selection Electric Valve The device is one of the basic conditions to meet the requirements of pipeline use. If the used Electric Valve Selection is improper, it will not only affect the use, but also bring adverse consequences or serious losses. So, how do we correctly choose Electric Valve device? Listen to Dalian Hongbo Power Engineering Co., Ltd. Slowly tell you:

Generally, the correct selection Electric Valve is based on the following:

1. Operating Torque: Operating torque is the most important parameter for selecting valve electric equipment. The output torque of the electric equipment should be 1.2 to 1.5 times the maximum operating torque of the valve.
2. Operating Thrust: There are two types of host structures for valve electric equipment: one is not equipped with a thrust plate and directly outputs torque; the other is equipped with a thrust plate, and the output torque is converted into output thrust through the valve stem nut in the thrust plate.
3. Number of Output Shaft Rotations: The number of output shaft rotations of the valve electric equipment is related to the nominal diameter of the valve, the valve stem pitch, and the number of threads. It should be calculated according to M=H/ZS (M is the total number of rotations that the electric equipment should meet, H is the valve opening height, S is the valve stem transmission thread pitch, Z is the number of valve stem threads).
4. Valve Stem Diameter: For multi-reversing type open stem valves, if the maximum valve stem diameter allowed by the electric equipment cannot pass the valve stem of the matched valve, it cannot be assembled into an electric valve. Therefore, the inner diameter of the hollow output shaft of the electric equipment must be larger than the outer diameter of the open stem valve stem. For partial reversing valves and concealed stem valves in multi-reversing valves, although the problem of valve stem diameter passage does not need to be considered, the valve stem diameter and keyway dimensions should be fully considered during selection to ensure normal operation after assembly.
5. Output Speed Ratio: The faster the opening and closing speed of the valve, the easier it is to cause water hammer. Therefore, the appropriate opening and closing speed should be selected according to different application standards.

Selection Electric Valve When selecting equipment, you must communicate more with professional technicians and let them understand your needs, so as to avoid wrong choices. Dalian Hongbo Power Engineering Co., Ltd. As a local agent for the CDG brand in Dalian, the EAT series electric actuators under its brand use digital integrated chips, absolute encoders, on-site rotary operation and LCD display, and mechatronics structure design. They have the advantages of simple debugging, convenient operation, strong protection, high reliability, and stable performance. They are suitable for butterfly valves, ball valves, plug valves, and dampers for angular stroke operation, playing the role of opening, closing, or regulating control of valves, which can be remotely controlled or operated on-site. Recommended!