Back purge bungs

[J_K]

I'm looking into making some exhausts soon and would like to back purge the welds so I need to find some bungs for the pipes but can't find any online with prices..

Anyone have any recommendations for bungs or where I can see how much they are???

 

[wyn]

There are a few bits on the rapid welding site

 

[pedrobedro]

How many are you going to make ? Good old gaffer tape or masking tape works for most applications.

 

[Paul G]

Silver are best.... maybe gold.

You deffinitely don't want blue or black.

 

[J_K]

Spot on.
Thanks guys.
Balloons and gaffa tape it is!

 

[Paul.]

For a small job a ball of cooking foil shoved up the pipe with a hole through for the gas feed works well, I have a posh self inflating setup for dairy pipe.
A video of how it works here http://www.youtube.com/watch?v=Zky7IwWuXiw&feature=related, perhaps a bit expensive for most Diy'ers but nice to use

 

[julieanncharters]

For a small job a ball of cooking foil shoved up the pipe with a hole through for the gas feed works well, I have a posh self inflating setup for dairy pipe.
A video of how it works here http://www.youtube.com/watch?v=Zky7IwWuXiw&feature=related, perhaps a bit expensive for most Diy'ers but nice to use
View attachment 25733

looks like summit from an ann summers catalogue

 

[Shox Dr]

Picked up a brand new set of 4 Purge Bladders for 40quid recently

Must be over a grands worth








.

 

[Ragnarok]

how about these if you want reusable bungs

 

[Wedg1e]

The welders who did some repairs for us down at Gosport a couple of years back (on 10" line as I recall) simply used big lumps of furniture foam and poked a gas pipe through it.