Valve Cleaning Steps

The valve parts must go through the following process before assembly:
1. According to the processing requirements, some parts need to be polished, and there should be no processing burrs on the surface;
2. All parts are degreased;
3. After degreasing is completed, pickle and passivate. The cleaning agent does not contain phosphorus;
4. After pickling and purification, rinse with pure water. There should be no chemical residue. This step is omitted for carbon steel parts;
5. Wipe the parts one by one with a non-woven cloth. No lint or other hair should remain on the surface of the parts, or blow dry with clean nitrogen;
6. Use non-woven fabric or precision filter paper dipped in analytical pure alcohol to wipe each component until there is no dirt left.