a, cleaning step

the valve parts before assembly must go through the following process:

1, according to the processing requirements, some parts need to do the polishing processing, surface can't be machining burrs, etc. ;

2 degreasing process, all parts;

3, degrease pickling passivation, after the completion of cleaning agent, phosphorous;

4, pickling passivation after rinse clean with water, there can be no drug residues, carbon steel parts leave out this step;

5 parts with non-woven fabric, shot for dry, not cable MAO retained components surface, or use a clean dry nitrogen;

6, with non-woven fabric or precision filter analysis of pure alcohol to wipe components one by one, until no dirty color.

2, assembly requirements

clean parts must be kept sealed, for installation. Requirements for the installation process is as follows:

1, the installation must ensure that the workshop clean, or clean up temporary area, for example with the new purchase of striped cloth or plastic film, such as, prevent dust during the installation process has entered.

2, 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, degreasing,.

3, erection tools must be clean before assembly to skim, ensure clean

three, other requirements

1, assembling complete Industrial Valves with nitrogen purging at least 1 minute.

2 must be with pure nitrogen, air test.

3, air test qualified junior stuff, with a clean PE cap seal, polyethylene cap before using organic solvent soak, wipe clean.

4, then seal in the vacuum bag.

5, the final packing.

6, in the process of transportation to take measures to ensure the coating is not damaged.

4 and acceptance requirements

acceptance follow HG - 20202 2000 skim engineering construction and acceptance standard, each part before assembly precision filter paper to wipe clean, select parts dead Angle, and filter the same color as qualified.

keywords: valve Industrial Valves degreasing methods
water gate valve y gate valve has gained a lot of popularity over the recent past.
Reach us at Mech Valve. We'll always try to give you the BEST deal on . If we can't, we'll at least give you some hel pful advice. Please use our experience!
We focus on operational procedure and manufacturing facilities of ductile iron gate valve.