Anti - corrosion valve body, mainly the correct selection of materials. Although the anti-corrosion information is very rich, but it is not easy to choose the right thing. Because the problem of corrosion is more complex, such as sulfuric acid in low concentration of steel is very corrosive, high concentration will make the steel passivation film, can prevent corrosion. The difficulty of selecting valve body material can not only consider the corrosion problem, at the same time must consider the pressure and temperature resistance, economically reasonable, easy to buy and other factors.
It is to take lining measure next, wait like lining lead, lining aluminium, lining engineering plastics, lining natural rubber and all sorts of synthetic rubber.
Thirdly, in the case of low pressure and temperature, the main material of fluorine lined valve often can effectively prevent corrosion.
In addition, the surface of the valve is also subject to atmospheric corrosion, the general steel material to brush paint to protect.