DN80/DN100/DN125 how big is the outer diameter of the ball valve flange?
So you must first determine the pressure level of your ball valve, and then determine the valve flange used standards, and then you can determine the basic parameters of the ball valve flange.
In addition to the three common, flange standard complex, a long story.All kinds of standards, there is a little difference in thickness, diameter of flange, bolt hole number, but the flange bolt hole parameters of the same pressure level (bolt circle diameter K, bolt diameter L, bolt number N) are the same.
The outer diameter of the ball valve depends on what kind of flange you useAt present, the domestic commonly used flanges are marked with JB/T (formerly mechanical industry standard), GB/T (GB), HG (Ministry of chemical industry).
