The flange of the flange butterfly valve is inconsistent with the standard flange
Thread Content
This post ends with All the best_DTSP edited on 2019-5-14 13:01 Recently, I did a skid installation and chose a flanged butterfly valve. After buying the butterfly valve, I found that the flange of the butterfly valve was inconsistent with the standard flange. There is also sealing rubber on the flange surface. Have you ever encountered it and how did you deal with it?
What is the difference between the flange of this butterfly valve and the standard flange? Got the pressure level wrong? In addition, the butterfly valve flange is made of rubber and is integrated with the valve seat. There is no need to add a gasket when connecting.
What standard does the butterfly valve you buy follow? Some butterfly valves have rubber-lined flange sealing surfaces depending on the medium. This is very common and is to prevent acid and alkali corrosion. Why is the flange wrong? Is it because the flange connection size does not match? Before buying, be sure to determine the flange standard of the connecting pipe, and then ask the manufacturer to supply flanges of the same size.
For rubber-lined butterfly valves, where are the flanges inconsistent and the bolt hole sizes different?
Adhere to flange standards, otherwise it will lead to disaster.
As long as the bolt hole center distance and other parameters are consistent, you can connect and use the rubber-lined position, which indeed eliminates the need for gaskets.
There are many standards and pressures for valve flanges. If you make the wrong one when placing the order, it will not be right.
Lining flange, and the visual inspection of the flange should be fine. Is it possible that the selection is inappropriate?
The size of the flange of the wafer butterfly valve is different from that of the ordinary flange. A special flange for the wafer butterfly valve needs to be selected.