Anticorrosion of electric ball valve products in sewage plant How to prevent corrosion of electric ball valve products in sewage plant? How to ensure the safe and effective operation of the pipeline? The electric ball valve of the sewage treatment plant is generally made of Q235A, and high-quality anti-corrosion treatment is adopted in the manufacturing process, which can effectively prevent the occurrence of various corrosion phenomena of the electric ball valve of the sewage treatment plant, extend the service life of the electric ball valve products of the sewage treatment plant, reduce the pipeline maintenance cost, and ensure the safe and effective operation of the pipeline. Anticorrosive coating of electric ball valve in sewage treatment plant: the film applied to the inner wall of the pipe to prevent corrosion in the pipe, reduce friction resistance and improve transmission capacity. Commonly used coatings are amine cured epoxy resin and polyamide epoxy resin, and the coating thickness is 0.038~0.2mm.
In order to ensure that the coating is firmly bonded to the pipe wall, the inner wall of the pipe must be surface treated. Since the 1970s, it has tended to use the same materials for the coating of the inner and outer walls of the pipe, so that the coating of the inner and outer walls of the pipe can be carried out at the same time. Anticorrosive and thermal insulation coating: in order to reduce the heat dissipation of the pipeline to the soil, a composite layer of thermal insulation and anti-corrosion shall be added outside the pipeline on the medium and small diameter pipelines for hot crude oil or fuel oil transportation. The commonly used thermal insulation material is rigid polyurethane foam plastic, and the applicable temperature is - 185~95. This material is soft. In order to improve its strength, a layer of high-density polyethylene layer is applied outside the insulation layer to form a composite material structure to prevent groundwater from seeping into the insulation layer.