May I ask whether the method of welding pressure transfer pipes through openings in the flange cover can be replaced with a flange + butt weld joint?
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1. May I ask whether, for this pressure transduction method of welding the pressure transduction tube through the openings in the flange cover, it is possible to use a regular flange weld to create a welded joint, and then weld that joint to the pressure transduction tube instead? 2. If possible, the original 3/4\" flange openings were used to weld in φ14 pressure pipes; now a butt weld joint is being used. How should its specifications be described?
In my opinion, the weld joint can be ignored; specifying φ14 is sufficient
I’ve never seen flanges used in this way for weld joints; usually, the flange cover is simply drilled to create openings, and I have done many projects of this kind
From what you describe, it seems more troublesome; is it really necessary? ? I don’t understand; I’ll move a bench to listen to the lecture. Please, master, give me your guidance.
It can be replaced by running a small 3/4\" pipe out; the subsequent connection is achieved using two reducing fittings: a reducing fitting (3/4\"-1/2\") + another reducing fitting (∅22/∅14), with the smaller pipe used to make the connection
I’ve never seen flange butt welding before, but it should be possible as long as the welding quality is up to standard. Share one with a picture
Can’t the butt-welded flange be used for direct diameter change?