Precautions for installation of direct sewage electric ball valve The direct sewage electric ball valve can be freely adjusted according to the on-site installation size. The electric ball valve for direct sewage supply with spheroidal graphite is a new product for connecting pumps, valves, pipes and other equipment with pipes. They are connected by full bolts to make it a whole, with a certain displacement, which is convenient for installation. It can bear the axial pressure of pipeline. In this way, during installation and maintenance, it can be adjusted according to the on-site installation size. During operation, it not only improves the work efficiency, but also plays a certain role in protecting the pump, valves and other pipeline equipment. The spherical graphite direct sewage electric ball valve compensates the axial, transverse and angular thermal deformation of the absorption pipe; Absorb equipment vibration and reduce the impact of equipment vibration on pipeline; Absorb the deformation of pipeline caused by earthquake and ground subsidence. Precautions for installation of electric ball valve for direct sewage supply: 1. Before installation, check the model, specification and pipeline configuration of the valve, which must meet the design requirements.
2. For the valve with inner sleeve, attention shall be paid to ensure that the direction of the inner sleeve is consistent with the flow direction of the medium, and the hinge rotation plane of the hinge type valve shall be consistent with the displacement rotation plane.
3. For valves 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 means of valve deformation, so as not to affect the normal function of the valve, reduce the service life and increase the load of the pipeline system, equipment and supporting members.
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 wave valve shall be removed as soon as possible, and the limiting 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 the valve shall not be blocked or restricted by external components, and normal action of all moving parts shall be ensured.
8. During the hydrostatic test, the secondary fixed pipe support installed at the end of the valve pipe shall be reinforced to prevent the pipe from moving or rotating. For the valve and its connecting pipeline used for gas medium, pay attention to whether it is necessary to add temporary support when filling water. The 96 chloride ion content of cleaning solution for water pressure test shall not exceed 25PPM. The direct sewage electric ball valve is mainly used to effectively compensate the thermal expansion and cold contraction of the pipeline due to the change of temperature, especially for the obvious thermal expansion and cold contraction deformation of PP pipe, plastic steel pipe, etc. The valve can play a very good compensation role. In order to prevent excessive valve volume, anti pulling device can be added to the valve.