What is the meaning of the schematic diagram of electric butterfly valve dn150? 1. The rubber pipe joint shall not exceed the displacement limit during installation;
2. The installation bolts should be symmetrical and tightened gradually to prevent local leakage;
3. When rubber pipe joints are installed on the ground, in the air and vertically, the actual working axial displacement pressure of the rubber pipe joints shall be less than the supporting force of the pipes, otherwise anti pull off devices shall be installed to prevent pulling off under working pressure;
4. The rubber pipe joint shall be far away from the heat source and ozone area, and the strong radiation light is strictly prohibited. Exposure and use of media that do not meet the product requirements;
5. During transportation, loading, unloading and installation of rubber pipe joints, it is strictly prohibited to scratch the surface sealing surface with sharp tools;
6. When installing products above DN200MM, please use special flange for butterfly valve or small diameter flange to avoid flange pulling off, water leakage and water seepage after installation.