Stainless steel pneumatic three-way ball valve before installation of the preparation

stainless steel ball pneumatic valve installed before preparation is mainly divided into the following steps:
, cleaning steps:
according to process requirements, some parts need to do polishing processing stainless steel pneumatic valve, the surface can't have machining burrs, etc. ;
all parts for degreasing process;
degrease pickling passivation after completing ( Detergent does not contain phosphorus;
with pure water rinse after pickling passivation, there can be no drug residues ( Carbon steel parts leave out this step;
one dry parts with non-woven fabric, not the cable MAO retained components such as surface, or use a clean dry nitrogen;
with non-woven fabric or precision filter analysis of pure alcohol to wipe components one by one, until no dirty color.

clean assembly required components must be sealed preservation, for installation. Requirements for the installation process is as follows:
installation must ensure that the workshop clean, or clean up temporary area ( For example with the new purchase of striped cloth or plastic film, etc. , to prevent dust during the installation process has entered.
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.
erection tools must be clean before assembly to skim, ensure clean.
and other requirements
pneumatic valve assembly completed with nitrogen purging minutes at least.
air test must be with pure nitrogen.
air test qualified junior stuff, with a clean PE cap seal, polyethylene cap before using organic solvent soak, wipe clean.
and seal in the vacuum bag.
the final packing.