RE: Banching from pipes

From: <ed>
Date: Mon May 10 2004 - 10:01:00 EDT

Hi A. R. Mani,

I don't think I have made any conclusion for you. What we (Steve McKenzie & I) have given you are just options.

In this particular example : 1" branch connection from a 12" main :

Steve McKenzie pointed out three (of many) possible ways to accomplish the task :

1.) Using standard tees and reducing fittings.

2.) Using a pipe stub-in.

3.) Using olets, threadolets, weldolets, etc.

I in turn put in another option : using half or full couplings

These are just options for you. The final conclusion/decision has to be made by you, the Project Engineer.

The bottom line is safety, economics and your previous experience on what works in your area and your shop.

Regards,

ed

-----Original Message-----
From: A.R.Mani [mailto:firreza@yahoo.com] Sent: Saturday, May 08, 2004 12:53 AM
To: PipingDesign@yahoogroups.com
Subject: RE: [PipingDesign] Banching from pipes

Hi Ed

Thanks for your comments but maybe I was not clear in explanation that you have concluded like that.

Of course taking a 1" branch from a 12" header would be much easier by a halfcoupling or sockolet or a boss and we would do the same.

The main purpose is to use fittings and to reduce reinforcement pads when making branches.

Best Regards

A.R.Mani

ed engalan <edengalan@hblpipe.com> wrote: <<<<<<<critical service.
Using readily available fittings and complying with your requirement you need:
1X 12" cut &prep, 1X 12"X4" reducer, 1X 4"X2.5" reducer, 1X 2.5"X1" reducer,
1X1" cut and prep, 2X12" welds, 1X4"weld, 1X2.5" weld, 1X1"weld. This is using the standard fittings in my book; it may be possible to eliminate a reducer or two.

For a stab in you need:
1 penetration burn (or drilled), grind & prep, 1 X 1" profiled cut and prep,
1 X 1" weld.

The quantities speak for themselves as to the amount of work involved.>>>>>>>>>>

Another option :

Usually for water service (or other non-critical service) and for 2" and under branches (threaded connection)

: use half or full coupling (acceptable run size has to be verified with your shop)

<<<<<<<<required - extra
weld, larger prep >>>>>>>>

www.bonneyforge.com

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