Can elbows and flanges be connected directly? (Gasketed)
Thread Content
For rubber-lined elbows, the enterprise standards set by rubber lining manufacturers specify that the elbow should be connected directly to a flat-welded flange. Is this in compliance with the regulations?
This post was last edited by ylb913 on 2016-1-9 at 11:27. The pipes that require anti-corrosion lining are all in low-pressure environments, so there’s no problem. Flat-face flanges are also used in low-pressure environments. Also, the gaskets are soft as well and cannot withstand even a few kilograms of pressure.
I’m not sure if it will affect bolt installation.
Sure, we have similar situations as well
There should be no problem, just be careful with the position of the bolts.
Elbows can be directly connected to flanges, which is in compliance with the standards. Any type of flange will do; if a rubber lining is used, it provides a smooth surface, so that’s certainly possible
Generally speaking, direct connection does not affect bolt extraction. If you’re not sure, you can calculate it again.
It depends specifically on the actual conditions and uses of this device; in theory, it is possible.
Flat-face flanges should not be connected directly to elbows without straight pipe sections; Article 5.1.4 of the \"General Rules for the Layout of Petrochemical Pipelines\" SH3012-2000 stipulates this
These regulations are established for daily production in order to avoid unnecessary ambiguities; if a bolt hinders installation or removal, who is responsible for that?