What is the degreasing step and process of the vacuum ball valve?

What is the degreasing step and process of the vacuum ball valve?

1) According to the processing requirements, some parts need to be polished, and the surface cannot be processed with burrs;

2) All parts are degreased;

3) After the degreasing of the stainless steel ball valve is completed, the acid is washed and passivated (the cleaning product does not contain phosphorus);

4) After pickling and passivation, rinse with pure water, there is no residual drug (carbon steel parts save this step);

5) Dry the parts one by one with a non-woven fabric, and do not leave the surface of the parts such as wire wool, or blow dry with clean nitrogen;

6) Wipe the parts one by one with non-woven fabric or precision filter paper and analyze the pure alcohol until there is no dirty color.

Other requirements for stainless steel ball valve installation:

1) The assembled stainless steel ball valve is purged with nitrogen for at least 1 minute;

2) The airtight test uses pure nitrogen;

3) After the airtight test is passed, encapsulation is carried out, sealed with a clean polyethylene cap, and the polyethylene cap is soaked with an organic solvent before use, and wiped clean;

4) then sealing with a vacuum bag;

5) After packing;

6) Measures should be taken during transportation to ensure that the envelope is not damaged.