other requirements
1. Purge the assembled valve with nitrogen for at least 1 minute.
2. The air tightness test must be performed with pure nitrogen.
3. Encapsulate after passing the air tightness test, seal with a clean polyethylene cap, soak the polyethylene cap with an organic solvent before use, and wipe it clean.
4. Then seal it with a vacuum bag.
5. Final packing.
6. Measures should be taken to ensure that the package is not damaged during transportation.
