Valve top flange
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I would like to ask the experts: what are the standards for the top flange of gate, globe, and butterfly valves? (American standard, German standard, British standard, Japanese standard, and Chinese standard.) Thank you first.
There are many standards, but they fall into three systems: the standard commonly used in Europe, the one commonly used in the Americas, and the standards used in Japan and Korea. For wafer-type butterfly valves, there is a special flange known as a butterfly valve-specific flange; everything else follows the same rules
It seems that the applicable scenarios are different, as are the standards; you can check the relevant manuals for details
Could you list a few of the commonly used European and American upper flange standards?
ASME B16.5 ASME B16.47 DIN EN1092-1 ISO 7005, etc
The top flange – the upper flange – isn’t it the flange that connects to the actuator? The ISO 5752 standard is generally used. . .
It seems that butterfly valve flanges are used quite often