How to prevent valve corrosion:

The anti-corrosion of the valve body mainly depends on the correct selection of materials. Although there is a wealth of information on corrosion prevention, it is not easy to choose the appropriate one because the problem of corrosion is very complex. For example, sulfuric acid has a great corrosiveness to steel at low concentrations, while at high concentrations, it causes a passivation film on the steel, which can prevent corrosion; Hydrogen only exhibits strong corrosiveness to steel at high temperatures and pressures. When chlorine is in a dry state, its corrosiveness is not significant, while when there is a certain humidity, its corrosiveness is strong, and many materials cannot be used. The difficulty in selecting valve body materials lies in not only considering corrosion issues, but also considering factors such as pressure and temperature resistance, economic rationality, and ease of purchase. So you must put your heart into it.

1、 Secondly, lining measures should be taken, such as lining with lead, aluminum, engineering plastics, natural rubber, and various synthetic rubbers. If the media conditions permit, this is a cost-effective method.

2、 Once again, when the pressure and temperature are not high, using fluorine lined valve body materials can often be very effective in preventing corrosion.

3、 In addition, the surface of the valve body is also subject to atmospheric corrosion, and generally steel materials are protected by painting.