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Fluorine lined butterfly valve inspection instructions

Fluorine lined pipelines and fluorine lined valves should be inspected in two aspects:

1) Unpacking inspection;

2) Professional inspection.

Unpacking inspection, mainly to check the number, model, specification, surface damage;

Professional inspection, mainly air pressure test and air tightness test.

Check according to standard. It is exterior quality, 2 it is to undertake dot spark inspection, 3 it is the detection of lining thickness. As for the quantity, model is only the most basic check and approval, generally warehouse

1, check whether flange flanging is worn

2, valve pressure test

3. Measure the lining thickness

According to the standard of the Chemical Industry Department (technical standard of fluorine lined pipeline), check whether the fluorine lined process is tight lining, check the thickness of fluorine lined, see if there is bubble phenomenon, check whether the size of the lining reactor tube meets the technical requirements, provide quality certificate, certificate of quality, and provide the material report of the tetrafluoron manufacturer.