welded metal bellows, vacuum valve, cleaned parts, sealed st

Writer： admin Time：2021-10-14 22:34 Browse：℃

welded metal bellows, vacuum valves, cleaned parts, sealed and stored 1. Ensure that the installation workshop is clean, or build a temporary clean area, such as newly purchased color striped cloth or plastic film, to prevent dust from entering during the installation process. 2. Assemblers wear clean overalls, head caps, no leakage of hair, clean shoes on feet, plastic gloves on hands, and degreasing. 3. Degreasing and cleaning the assembly tools before assembly to ensure cleanliness. Other requirements 1. The assembled valve should be purged with nitrogen for at least 1 minute. 2. The air tightness test uses pure nitrogen. 3. After passing the airtight test, seal it with a clean polyethylene cap. The polyethylene cap should be soaked in organic solvent and wiped clean before use. 4. Then seal it with a vacuum bag. 5. After packing. 6. Measures must be taken to ensure that the package is not damaged during transportation."