ASTM A274 - WPB - Tapping in a standard forged fitting
ASTM A274 - WPB - Tapping in a standard forged fitting
(OP)
Can we take a tapping from a standard forged fitting i.e. suppose we want to take a 2" tapping (extended Piping) from the center of an standard 6" elbow (ASTM A274 - Grade WPB) is it ok as per the API / ASME standards or do we need to provide a reducing TEE ?? I there a note refering to the above point anywhere in any kind of standard ?
Matter most urgent..Pls. help
Matter most urgent..Pls. help





RE: ASTM A274 - WPB - Tapping in a standard forged fitting
What about using a threadolet? However even there you wouldn't have anymore a standard component, so you would need to check your design in order to satisfy code requirements.
prex
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RE: ASTM A274 - WPB - Tapping in a standard forged fitting
PREX is correct..... You simply cannot connect piping branch lines in any particular component that you can get a thread into.
The whole reason that forged components like weldolets, sockolets, threadolets etc exist is to address the need for pressure reinforcement and to provide an acceptable weld profile.
There is some information here:
http://www.bonneyforge.com/OletCat.PDF
However, you may also want to review the information in a book like the "Piping Handbook" by Nayaar
You seem to have no background in piping and I believe that you do not understand the code-mandated concept of "pressure reinforcement" in piping and pressure vessels
my opinion only....
MJC