Precautions for assembly and processing of stainless steel flange ball valve

Published on:

2020-11-16

Stainless steel flanged ball valve has the characteristics of convenient maintenance, simple structure, compact and reliable, small size and light weight, and can also be used in vacuum systems. Therefore, it is widely used in various places where it is needed. In order to extend the service life of the product, the following is for you Introduce the precautions for assembly and processing of stainless steel flanged ball valves.
　　 1. According to the processing requirements, some parts of the stainless steel flanged ball valve need to be polished, and the surface must not have processing burrs.
　　2. All parts are degreased.
　　 3. Assembly tools must be degreased and cleaned before assembly to ensure cleanliness.
　　4. Pickling passivation is carried out after degreasing is completed (the cleaning agent does not contain phosphorus).
　　5. Rinse with pure water after pickling passivation, and there should be no chemical residue.
　　6. Dry the parts one by one with a non-woven cloth, and do not leave the surface of the parts such as lint, or dry with clean nitrogen.
Precautions for assembly and processing of stainless steel flange ball valve

　　7. Use non-woven cloth or filter paper dipped in analytical pure alcohol to wipe each part until there is no dirty color.
　　 8. Parts that require cleaning during assembly must be sealed and stored for assembly.
　　 9. The assembled stainless steel flanged ball valve is purged with nitrogen for at least 1 minute.
　　 10. The air tightness test must use pure nitrogen.
　　11. After passing the airtight test, encapsulate and seal with a clean polyethylene cap. The polyethylene cap should be soaked in organic solvent and wiped clean before use.
　　12, then seal it with a vacuum bag.
In addition, it should be noted that the assemblers must wear clean and degreasing cotton overalls, a cotton cap, no hair leakage, clean shoes, and plastic gloves; the stainless steel flange ball valve assembly workshop must be clean or temporary. The clean area, such as newly purchased color striped cloth or plastic film, etc., to prevent dust from entering during the assembly process.