Oxy Acytelene Welding

Hello Guys,

I have a question concerning the selection of the oxy acytelene kit

I am using the above procedure for welding Copper pipes Type L according to ASTMB88-96 my problem is that I don't know which weding tip size should I select as my copper pipe diameter is 21/8'' and how should I select the tip.
could i use a double tip or one is enough?

If any body can provide me with a guide for the tip selection or even give me the selection or a supplier or anything concerning this issue I would be very grateful.

Thank you in advance and best regards

Alright

http://www.twi.co.uk/j32k/protected/band_3/jk3.html

This is helpfull

Hi Hipposs,
I used to find using a size 18 nozzle worked for me on 2.1/8" tube, but then I only had four sizes, No.3 for small stuff, No.7 for medium, No.13 for big, and No.18 for bigger sizes. It worked for me, but I haven't done upward of 2.1/8" for a few years and cant remember what size nozzle I used for 4.1/8". I'm sure someone else will be able to shed some light.
Regards, Andy C.

For those pipe sizes you will nee the largest nozzle you can find.

Personally, I favour THIS type, commonly known as "shower-heads". The have 7 or more orifices built in to the tip, giving lots of heat over a wide area.

Quote:

---

Originally Posted by The Viking

For those pipe sizes you will nee the largest nozzle you can find.

Personally, I favour THIS type, commonly known as "shower-heads". The have 7 or more orifices built in to the tip, giving lots of heat over a wide area.

---

Pepperpots.

"A loved child have many names"

(Chinese proverb)

That link i posted up top,is that chart any good?

I have used tips similar to those described by The Viking. Thed do cover a large area with a large flame, but you still have to move the tip around to evenly heat larger pipes. And be careful with the oxygen settings. You do not want a cutting torch!

My best advice is to heat the pipe uniformly all the way to the depth of the fitting socket and not get in a big hurry. Large pipes take time to braze well.

I dont know there, but here I have nozzles marked
0,5-1
1-2
2-4
6-9
9-14
14-20

and I using 6-9 and 9-14 for 54mm CU pipes.

Since getting a pepperpot burner i've used nothing else (except a mapp gas blow lamp on small stuff) Every oxyacc set should have one, great for compressor changes etc.
Years ago i did some 3 1/8 pipe but for that we just drilled out a nozzle to get a bigger flame....don't try this!

Or this ones at the bottom of the pages http://www.mir.be/NL/catalogue.php?cid=11

Quote:

---

Originally Posted by The Viking

For those pipe sizes you will nee the largest nozzle you can find.

Personally, I favour THIS type, commonly known as "shower-heads". The have 7 or more orifices built in to the tip, giving lots of heat over a wide area.

---

I find it preferable to use this type of nozzle from 1 1/8" inch and upwards. It heats more "softly" and over a wider area. It gets faster to heat the large pipes with that "multi nozzle" burner.

thanks guys your posts have been of a great help for me

Citb Brazing Recomend Pepperpots