Flange type of the connection pipe for the ammonia storage tank
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May I ask: Is the connection flange for the 20% ammonia storage tank of the WN type or another type? Ammonia is a highly permeable medium.
If there is no pressure, a plain weld flange will do! It mainly comes down to management!
Since ammonia solution is a highly permeable medium and stress corrosion occurs, WN-type flanges must be used
For equipment using highly permeable media, there is no requirement to use butt-welded flanges, but it is stipulated that the flanges must have a strength of more than 2.0 MPa. So any flange will do.