Which flange standard is used for American standard valves with large diameters (24" or more)?
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Is the flange standard used by American standard valves with large diameters (24" or more) ASME B 16.47 Series A or Series B? What is the purpose of this choice?
A series and B series seem to have different flange calculation methods, so the thickness and size are different, so AB series cannot be mixed. Since they are equipped with valves, they must be matched according to the flange of the valve, but generally A series is used more. Reference: https://bbs.hcbbs.com/thread-1366864-1-1.html
A normal type and a compact type.
Whether to choose A or B depends on the unified requirements of the owner. The flanges used in the entire project should be unified.
If AB here refers to the outer diameter series of pipe fittings, there seems to be no AB distinction for American standards. American standards are all A, right?
Our company all adopts ASME B16.47A
There is no AB series for pipe diameters, but for flanges larger than 24", there is an AB series in ASME B16.47.
Is there a 150LB size of DN1700?
No, the standard maximum size of CL150 is 60” (DN1500)
There should be no problem with both, the key is not to mess with it! Unification is the best, and it will be convenient to purchase spare parts and repair in the future!
Oh, I’ve never seen this standard, and I’ve never used such a large pipe diameter. It seems like I need to study hard.* Down, hehe.