Project of the Month built by SilverSanJuan
Home Model Engine Machinist > Building Them > Boilers > Re-using copper tubing - yay or nay?

Reply
 
Thread Tools
Old 11-27-2016, 11:54 PM   #1
Thad Swarfburn III
 
Join Date: May 2009
Location: Christchurch, NZ
Posts: 43
Liked 2 Times on 2 Posts
Likes Given: 3

Default Re-using copper tubing - yay or nay?

Tearing apart some equipment at work and have pulled out ten 1 metre sections of 1/8 copper line. I'd like to scavenge this for future steam use but it's been used as indicator line in a hydraulic power pack (to the pressure gauge) and consequently has hydraulic oil in it.

What are the thoughts on reusing this?


Thad Swarfburn III is offline  
 
Reply With Quote
Old 11-28-2016, 01:19 AM   #2
toolznthings
HMEM_SUPPORTER.png
 
toolznthings's Avatar
 
Join Date: Dec 2013
Location: Kent,Ohio
Posts: 249
Liked 177 Times on 85 Posts
Likes Given: 104

Default

Hi,

May end up being more work in the end than what the tubing is worth ? May need annealed if it's been " worked " much during the original install.


toolznthings is offline  
 
Reply With Quote
Old 11-28-2016, 02:06 AM   #3
Blogwitch
Ex Bogstandard
HMEM_SUPPORTER.png
 
Blogwitch's Avatar
 
Join Date: Dec 2008
Location: Crewe, UK
Posts: 3,432
Liked 605 Times on 456 Posts
Likes Given: 53

Default

A few years ago I made a small boiler using some 10mm diameter salvaged tubing from a central heating system.

After the boiler was made and when pressure tested one of the boiler tubes split along it's length, rendering the boiler useless.

Since then I have always used new tubing.

If you have a local car brake specialist in your area, they should be able to order in (or have in stock) small sizes of annealed copper tube for very realistic prices. I would buy it in 5 or 10 metre coils.

John
__________________
If you don't try it, you will never know if you can do it!!
Blogwitch is offline  
Thad Swarfburn III Likes This 
Reply With Quote
Old 11-28-2016, 02:43 AM   #4
Ratshooter
 
Join Date: Dec 2007
Posts: 24
Liked 9 Times on 6 Posts
Likes Given: 5

Default

Well, at least in the USA, copper tube for hydraulic brake lines has been illegal. At least it has since I started automotive school in 1971.

There's no need to throw the tube away, it'll be handy for something. It might be okay for misc plumbing. Like blog said avoid heartbreak, best start with new tubes!

TC
Ratshooter is offline  
 
Reply With Quote
Old 11-28-2016, 03:58 AM   #5
Cogsy
 
Cogsy's Avatar
 
Join Date: Jul 2012
Location: Perth, Western Australia
Posts: 1,608
Liked 416 Times on 318 Posts
Likes Given: 373

Default

Here in Western Australia we're allowed to use copper for hydraulic brake lines, at least on trailers, but have to have it securely fastened at least every 600mm (2') from memory.
__________________
Al.
______________________
I'd like to be a perfectionist, but I lack the patience...not to mention the skill...
Cogsy is offline  
Thad Swarfburn III Likes This 
Reply With Quote
Old 11-28-2016, 08:53 AM   #6
Blogwitch
Ex Bogstandard
HMEM_SUPPORTER.png
 
Blogwitch's Avatar
 
Join Date: Dec 2008
Location: Crewe, UK
Posts: 3,432
Liked 605 Times on 456 Posts
Likes Given: 53

Default

What you have to take into account is the amount of work it has done before you get your claws into it. It only has to have so many pressure ons and offs before it becomes weakened. For a certain amount of time after installation it will get stronger as the pipe work hardens, then it is just a matter of time before it fails. Sometimes soon, a lot of times never. I prefer not to take the chance.

For those in the UK

http://www.ebay.co.uk/itm/Copper-Pip...q1IQkwKmMlNZYQ

It can be bought cheaper than this if you do an extended online search.

John


__________________
If you don't try it, you will never know if you can do it!!

Last edited by Blogwitch; 11-28-2016 at 09:28 AM.
Blogwitch is offline  
 
Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
copper tubing suppliers for boilers rhankey Boilers 17 01-30-2013 10:36 PM
Bending Copper tubing?? Jeff02 Tips and Tricks 18 06-01-2010 06:52 PM
Reducing copper tubing? vlmarshall General Engine Discussion 5 10-09-2009 06:25 PM
Copper tubing specs Bernd Tips and Tricks 3 07-25-2008 06:58 PM
Copper tubing for boilers. ed miles General Engine Discussion 2 09-26-2007 05:46 PM



Newest Threads






- Top - Member List