Alloy steel WN Flange with ISO certificate

November 17, 2020

Valve industry in the country has been for decades, a simple valve to useful valve innovation, combined with years of experience, the flange valve is constantly improving, the valve industry has experienced many hardships and brilliant.

Flanged ball valve is a kind of commonly used hardware products, flanged ball valve before assembly and assembly process is also a certain technical requirements, or assembled flanged ball valve can not reflect its own excellent performance, France Lan ball valve in the assembly process what are the technical requirements?

Flange ball valve assembly pre-processing requirements:

1, according to the processing requirements, some parts need to be polished, the surface can not have processing burr;

2, flange ball valve all components for degreasing;

3, after degreasing pickling passivation, cleaning agents do not contain phosphorus;

4, pickling passivation purified water rinse, can not have residual drug, carbon steel parts save this step;

5, one by one with a non-woven fabric to dry, can not be wired wool retention parts surface, or dry with a clean nitrogen;

6, with a non-woven or precision filter paper staining analysis of alcohol-by-component wipe, until there is no dirty color.

Flange ball valve assembly technology requirements:

1, the installation workshop must ensure clean, or to build temporary clean area, for example, with the new color film or plastic film, etc., to prevent dust in the installation process.

2, the assembly workers must be wearing clean cotton overalls, wearing a cotton cap, the hair can not be leaked, wearing clean shoes, hand wearing plastic gloves, degreasing.

3, assembly tools must be degreasing cleaning before assembly to ensure clean.