Reducing Tee end connections

a) You should never use a reducing TEE for a 1" branch from a 4" line

b) I do not know of a fitting manufacturer that makes such a reducing TEE. My fitting chart does not list such a TEE.

c) A 1" branch (any 2" and smaller) from a 4" line (header) should be done with an "O-Let" fitting

The min. size of reducing tee 4" NPS is furnished with a branch 1-1/2" NPS, so you have to use a reducing tee 4" x 1-1/2" to be BW (for the both connections of the main run & branch), to be assembled with a Swedge Nipple of NPS 1-1/2" x 1" to be BLE/POE. The branch 1" NPS of that swedge nipple characterized by its plain (square cut) end which can be easily used for connections to SW fittings.

BLE/POE = Beveled Large End (1-1/2" NPS) & Plain Other End (1" NPS)

To all of you novice (and other) pipers there is one part of Mister Galala's posting that is wrong.

"BLE/POE = Beveled Large End (1-1/2" NPS) & Plain Other End (1" NPS)"

The part that is wrong is "POE" and "Other"

With all due respect to mister Galala, it is quite possible that he is the only one who may think that this is right. However the industry at large does not use this and the vendors and suppliers will probably not recognize it.

The proper terminology in this case would be "PSE" for "Plain Small End"

For Reducers and Swedge Nipples you will only have a "Large end" and a "Small end."

End Preps:

For end preps you may have Plain ends, Bevel Ends or Threaded Ends.

The "P" (Plain) is for socket weld construction/assembly.

The "B" (Bevel) is for Butt welded construction/assembly.

The "T" (Threaded) is for screwed construction/assembly.

Note:

You can also have the letter "B" in the order terminology. This letter stands for "Both". Thus you can order "PBE" (Plain Both Ends) for socket welded both end construction/assembly.

Instead of using the following (such) abbreviations:

PBE : Plain both ends

PLE : Plain large end

PSE : Plain small end

BBE : Beveled both ends

BLE : Beveled large end

BSE : Beveled small end

TBE: Threaded both ends

TLE : Threaded large end

TSE : Threaded small end

BOE : Beveled one end

POE : Plain one end

BOE : Beveled one end

From my side, I have to use the language (abbreviation) which is closest to me and matching to my understanding, where I consider that abbreviations are not a solid or fixed thing, therefore nothing is wrong as you said, and I'd like you to know that when the letter "O" comes in the middle of first half (like BOE) it denotes to ONE, and when the same letter "O" comes in the middle of second half (like POE) here it must denotes to OTHER.

For example POE/TOE, you can't say: plain one end & threaded one end, no way to repeat the word "one". But it denotes plain one end & threaded other end.

Also for BLE/POE: PLE denotes to beveled large end & POE can't be read as plain one end, where it is better to say plain other end (or you can say PSE which means plain small end).

At the end you can consider that as a single contribution from my side to be added to those standard abbreviations without saying that this is a mistake from Mr. Galala.

????

BOE : Beveled one end?

POE : Plain one end?

TOE : Thread one end?

Which end are you talking about???

Hello!

Thanks for previous post.

Tell me whether it is possible to have flanged reducing Tee (say 50x40) for any specific piping spec?

As far as I know it is not possible to have this connection for any spec nor for any service & for any operating conditions.

Pl. clarify this statement with proper logic.

Thanks

ASME B16.5 is not only for flanges but also for flanged fittings, it is name is:"Pipe Flanges and Flanged Fittings". Please see the end of Figure 1 "Method of Designating Location of Auxiliary Connections When Specified".

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