Connection issues with flanges or valves based on different standards
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Gentlemen, can 150LB or 300LB valves be connected to flanges at 2.5 MPa? (That is, the connection according to US standards and other standards) How are other models connected?
Generally, no. Check the corresponding standards for the diameter of the bolt’s center circle, the diameter of the bolt hole, and the number of bolts, to see if they can match; generally, it seems that they can’t
It depends on the standards; some standards are applicable universally, while others are not
It’s impossible to connect this; to connect valves, standard flanges of the same type must be used. Thinking of a way to do this would be a futile effort with no positive outcome
Haha, I seem to have talked about this topic before. During our pressure testing, some experts connected flanges of different weight classes together; the bolts were all at an angle. After the testing was completed, the individual parts were shipped out, and they looked truly frightening.
What’s even better is that the pressure gauge on the pressure pump was broken; they weren’t aware of this and continued to apply pressure. Later, when something seemed wrong, they sent someone to a higher position to check, and it turned out that the pressure was too high, so they quickly released the pressure.
No, it’s not possible. You can add a short section with flanges at both ends to connect them, or replace the PN25 flanges