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Copper Pipe Bender

15K views 21 replies 14 participants last post by  KillerToiletSpider  
#1 ·
Hello all!

Ive decided to upgrade to a propress tool setup for primarily copper pipe installs. The fittings are a fortune which got me to thinking about bending copper pipe whenever possible.

I bend emt all the time for electrical work, but Ive never done it for plumbing. Ive seen a few videos about it, and Ive looked at alot of copper tube benders online that range from just a few bucks to several hundreds of dollars to even 1000+ if you go with a fancy ridgid hydrolic model.

Would love some advice from people who have experience bending copper pipes for water supply lines. I dont see myself bending anything over 3/4" and I think 90% of it will be bending 1/2" copper pipes.

Questions I have are:


  • Is there a down side to bending copper pipes for water supply lines?
  • I see alot of videos of HVAC guys bending pipes but not many plumbers, is that for a good reason?
  • Is there an affordable tool someone can recommend to bend copper pipes? Are there cheapy crappy ones that will only frustrate me and ruin my work that I should stay away from?
  • Is there a thickness that I should avoid using? I typically like using type L for residential installs whenever possible.
 
#4 ·
Thx for the reply but Im not a fan of soft copper for two reasons. It doesn't look as good when installed and a big part of my business is presentation presentation presentation, and it has very thin walls.

Ive never seen a plumber using propress but i see HVAC guys using it.
Ive been eyeballing it for a while and recently seen a plumber install some lines with it. It was impressivly quick and pretty simpe to use and according to him a 100% success rate with fittings and installs.
 
#5 ·
We use them all the time for 3/4 & 7/8 lines. They handle about 75 to 150 psi. Haven't heard of many complaints, and looks decent. Heck, it looks better than sloppy welds, and there are less joints.

Tin, in regards to the emt horshoe, I tried to bend 7/8(od)" pipe, (boneyard stuff), and it would always kink. Perhaps it's me, but I was sure hoping the horseshoe would work. Yellow jacket has a setup that works slick. I can't vouch for the thinning, but, haven't had any issues as of yet.... h.v.a.c.
 
#8 ·
In the UK all we did was bend copper. Boss preferred bends over fittings because of the cost, look and less restriction. Used to have to put as much as 10 bends into some lengths and it took me a while to learn that skill. Used benders like the one below that worked very well. I think rothenberger sell them in the US for 1/2" and 3/4" pipe sizing.
 
#13 ·
I've thought about this for many years and I've come to terms with the fact that it doesn't weaken the copper enough for something structural in and of itself but when you add water, pressure, vibration, and temperature changes to that bend, it will eventually fail.
 
#14 · (Edited)
tedanderson said:
I've thought about this for many years and I've come to terms with the fact that it doesn't weaken the copper enough for something structural in and of itself but when you add water, pressure, vibration, and temperature changes to that bend, it will eventually fail.
I have pulled out thousands of bends and put tens of thousands in and upto this date never seen one fail. In Europe its the most common way to install copper pipe. Its also one of the first things your taught to do in the courses.

Here's the first things we done on the first week. After 2 years your able to put about 10 bends into a 12ft long piece and it all line up exactly where it needs to go.



 
#16 ·
After 2 years your able to put about 10 bends into a 12ft long piece and it all line up exactly where it needs to go.
Makes sense. I even see people do it on Youtube. I guess I'm just one of those people who have a hard time believing that the seat cushions on airplanes float because I've never seen anyone actually pull one out.

Maybe European copper is different in that way because bending is part of the trade culture.
 
#15 ·
BCConstruction said:
I have pulled out thousands of bends and put tens of thousands in and upto this date never seen one fail. In Europe its the most common way to install copper pipe. Its also one of the first things your taught to do in the courses. Here's the first things we done on the first week. After 2 years your able to put about 10 bends into a 12ft long piece and it all line up exactly where it needs to go.
I really love this bending copper lines thing, if theres a type of copper sold in US that is useable for this method (besides soft rolls).

I may reconsider replumbing my house in pex to go with copper if i can do something like that
 
#17 · (Edited)
dielectricunion said:
I really love this bending copper lines thing, if theres a type of copper sold in US that is useable for this method (besides soft rolls). I may reconsider replumbing my house in pex to go with copper if i can do something like that
Its the type m and l sold in most plumbing supplies. Theres benders for soft and semi hard and hard copper. Here's a link to the models that fit most pipe your gonna use.

Anything above 3/4" is a ***** to bend by hand. Check out the 2 bottom models. http://www.rothenbergertools.us/45-Hard_&_Soft_Copper_Hand_Benders.html
 
#19 ·
I bend copper tube everyday, the standard copper here we use is known as "half hard". The main advantage to a pulled bend is that it does not restrict the flow as a 90 deg elbow would, especially important on low a pressure supply.

Over here the copper is classified as table X, table Y, table Z.

Table X is soft copper
Table Y is half hard
Table Z is thin wall (can't be bent, has a red mark on it to signify it's thin wall)
 
#21 ·
I use to be such a propress naysayer, but I went to it exclusively and never looked back. Such a labor saver on pipes larger than 1". Euro plumbers bend copper all the time and it's a much more efficient system. Less flow restriction and less chance for pipe turbulence. Look into the German tools for pipe bending, rothenberger or rems.