Branch outlet fitting
Branch outlet fitting
(OP)
I am looking for a standard that provides design requirements for designing a pipe branch outlet fitting. I am trying to find out the requirements for the hole cut. I have been told there are a couple specs out there and they differ in what they say (i.e. pipe size=4" hole should be =2" or hole should be 3"). Any help on this is appreciated.





RE: Branch outlet fitting
Look at B16.9 Factory-MAde Wrought Buttwelding Fittings, or B16.11 Forged Fittings, Socket-Welding and Threaded.
For reinforcement of Welded Branch Connections look at ASME B31.3 para. 304.3
RE: Branch outlet fitting
MSS Website is www.mss-hq-com
RE: Branch outlet fitting
I assume that you're talking about "olet" type fittings like Weldolets, Threadolets, etc.
Contact Bonney Forge or another manufacturer for this information. I have an old pamplet, W-8, 1974 from Bonney Forge that gives all of the hole cut-out dimensions for their fittings.
I caution that other manufacturers may vary, I'm not sure.
Good luck,
NozzleTwister
Houston, Texas