What is the difference between Shandong electric butterfly valve motor and electric valve? 7. The manual opening and closing resistance of the butterfly valve body is moderate, and the torque of the butterfly valve matches the torque of the selected actuator.
8. The flange used for butterfly valve connection is correct, and the pipe clamp flange is consistent with the butterfly valve flange. It is recommended to use the special flange for butterfly valve instead of flat welding flange.
9. Admit that the flange welding is correct, and do not weld the flange after the installation of the butterfly valve to avoid burning the rubber parts.
10. The installed pipe flange shall be aligned with the butterfly valve.
11. Install all flange bolts and tighten them by hand to align the butterfly valve with the flange, and then carefully open and close the butterfly valve to ensure that the opening and closing are flexible.
12. Fully open the valve, use a wrench to tighten the bolts according to the diagonal sequence, without washers. Do not tighten the bolts too tightly to prevent severe deformation of the valve ring and excessive opening and closing torque.
、 The positioner of the pneumatic butterfly valve has a problem. Friends who have solved the problem of the pneumatic butterfly valve should know that to enable the butterfly valve to operate normally, a major prerequisite must be met, that is, there must be a positioner to work with the butterfly valve. In short, the positioner is an important part of the pneumatic butterfly valve, so what is its role? Let the company's professionals explain:
