Pipe coupler questions

[Ron Van Putte]

Chuck Czarnik wrote:

>Eric's post about the ES pipe got me curious..
>
>I have an ES 4C pipe, and want to use it with an AAP header.  The problem is that the inlet of the pipe seems to be a good bit larger than the outlet of the header.. Teflon couplers won't stretch, so how do I reduce it? 
>

Teflon couplers do stretch.  I buy teflon coupler material that's a bit 
smaller than the smaller diameter (usually the header).  Then I heat 
several nut drivers with increasing diameters on my kitchen stove.  I 
push the smallest driver in as far as needed, working it in and out to 
keep the teflon rubbery.  Then I move on to the next size nut driver and 
do the same thing.  When the coupler end is large enough to go on the 
bigger diameter item, I push the coupler on.  When it cools, the coupler 
will shrink and grip the surface.  Then I do the other (easy) end.  

Ron Van Putte


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