Maintenance and upkeep of stainless steel ball valves

During the production process, stainless steel ball valves are easily touched with other metal and iron products. In order to keep stainless steel valves from rusting at all times, the simple method is to follow the following process.



1. In the future, the semi-finished products need to be washed clean after acid washing. If there are sand holes or perforations, they should be gas shielded welded using argon arc welding. Then, polish and perform solid melting treatment;



2. Finished products, processing and pressure testing will be completed in the future. It should be washed with water that is added to the anti rust powder.



3. During transportation, try to use wooden boxes for packaging and avoid touching metal products.



4. In the future, the pipeline of the device should be regularly protected and maintained, such as regularly applying lubricating oil to the valve stem. Properly open and close the valve several times. Make it difficult to assimilate the inner ball, valve stem, and sealing surface.



Stainless steel ball valves generally have two structures: reduced diameter and non reduced diameter channels. Regardless of the structure, the flow resistance coefficient of ball valves is relatively small.



Especially for the so-called full flow type, which is a non reducing ball valve, due to its channel diameter being equal to the inner diameter of the pipeline, some resistance loss is only the frictional resistance of the equal length pipeline, that is, in all valves, the flow resistance Z of this type of ball valve is small. In rocket launch and experimental systems,



The smaller the resistance of the transportation pipeline, the better.



There are two ways to reduce the resistance of pipeline systems: one is to reduce the fluid flow rate, which requires increasing the pipe diameter and valve diameter. This often has a negative impact on the economy of pipeline systems, especially for low-temperature transportation systems (liquid hydrogen).