1. The model, specification and pipeline configuration of stainless steel electric ball valve shall be checked before installation, and must meet the design requirements.
2. For the electric ball valve with inner sleeve, the direction of the inner sleeve shall be consistent with the flow direction of the medium, and the hinge rotation plane of the hinged electric ball valve shall be consistent with the displacement rotation plane.
3. For the electric ball valve requiring "cold tightening", the auxiliary components used for pre deformation shall not be removed until the pipeline is installed.
4. It is strictly prohibited to adjust the installation out of tolerance of the pipeline by deformation of the stainless steel electric ball valve, so as not to affect the normal function of the electric ball valve, reduce the service life and increase the load of the pipeline system, equipment and supporting components.
5. During installation, welding slag is not allowed to splash on the surface of the corrugated shell, and the corrugated shell is not allowed to suffer from other mechanical damage.
6. After the installation of the pipeline system, the yellow auxiliary positioning components and fasteners used for installation and transportation on the electric ball valve shall be removed as soon as possible, and the limit device shall be adjusted to the specified position according to the design requirements, so that the pipeline system has sufficient compensation capacity under environmental conditions.
7. All moving elements of stainless steel electric ball valve shall not be blocked or restricted by external components, and the normal action of each moving part shall be ensured.
During the hydrostatic test, the secondary fixed pipe support installed at the end of the electric ball valve pipeline shall be reinforced to prevent the pipeline from moving or rotating. For the electric ball valve used for gas medium and its connecting pipeline, pay attention to whether it needs to add temporary support when filling water. The 96 chloride ion content of cleaning solution for water pressure test shall not exceed 25PPM.
9. After the hydrostatic test, the accumulated water in the wave case shall be drained as soon as possible and the inner surface of the wave case shall be blown dry.
10. The insulation materials in contact with the electric ball valve shall be chlorine free.