The valve is a kind of commonly used hardware product. There are certain technical requirements for the valve before and during assembly. Otherwise, the assembled valve cannot reflect its own excellent performance. What are the technical requirements for the valve during assembly?

Pretreatment requirements for valve assembly:

1. According to the processing requirements, some parts need to be polished, and there should be no machining burr on the surface;

2. Degrease all parts;

3. Pickling and passivation shall be carried out after degreasing, and the cleaning agent shall not contain phosphorus;

4. After pickling and passivation, clean it with pure water without chemical residue. This step is omitted for carbon steel parts;

5. Dry the parts one by one with non-woven cloth, and do not leave the surface of parts such as wire wool, or dry them with clean nitrogen;

6. Wipe the parts one by one with non-woven cloth or precision filter paper stained with pure alcohol until there is no dirty color.

Technical requirements for valve assembly:

1. The installation workshop must be clean, or temporary clean areas shall be built, such as newly purchased color strip cloth or plastic film, to prevent dust from entering during installation.

2. The assembly workers must wear clean cotton work clothes, pure cotton hat, no hair leakage, clean shoes, plastic gloves and degreasing.

3. Tools for assembly must be degreased and cleaned before assembly to ensure cleanness.