The valve assembly operation requirements

The valve product assembly quality, directly determine the valve products of the whole machine performance. So the valve is in the process of assembly has a certain technical requirements, otherwise the assembly of the valve is not itself have excellent properties.

1. Installation must ensure that the workshop clean, or clean up temporary area, prevent dust during the installation process has entered. Erection tools must be clean before assembly to skim, ensure clean.
2. The assembly workers must be dressed in a clean, pure cotton overalls, head Dai Chun cotton padded cap, hair can't leakage, foot wear clean shoes, hand wear plastic gloves, skim.
3. See assembly figure before assembly, assembly process, the production order. According to the final assembly drawing assembly products, nice outfit, packing product components. Strictly according to the assembly assembly process specification implementation of civilization, civilization. Strictly prohibit disorderly, disorderly 'rough operation behavior.
4. Product parts edge clean, remove the thorn shall not damage parts other surface edges. Valve lumen to clear and clean, no dirt and surface adhesion iron filings and other sundry. Especially in the assembly process to protect seal face shall not be cut.
5. Assembly to visual components in the surface of sand holes, porosity, porosity, crack, knock against scratches and knock traces, inform checker processing, must not enter the assembly.
6. Inside the valve cavity with anti-rust oil. To apply lubricant lubrication parts. The seat bottom, threaded parts are not allowed to apply solid fat.
7. Without changing the product parts, materials do not conform to the requirements of the parts assembly, unqualified parts assembly, and promptly notify the quality inspection personnel processing.
8. Forgings with pitting play product identification and furnace steel word, lack of casting steel word play furnace, furnace on heat number or argon welding. Casting type heat number, trademarks, etc. To identify clearly. Then complete the valve assembly form and suspension product identification card.
9. Furnace body parts direction consistent, properly handle, hand wheel position, switch in position, identity right, lock, limit device is accurate. All fastener screw ( Pull) Tight, no loose.
10. Valve assembling complete with nitrogen purging at least 1 minute. We check after the product assembly personnel first inspection. Report to the inspectors found quality problems in a timely manner.
11. Must be with pure nitrogen air test. Air test qualified junior stuff, with a clean PE cap seal, polyethylene cap before using organic solvent soak, wipe clean. Then the seal in the vacuum bag. After packing. In the process of transportation to take measures to ensure the coating is not damaged.