[T3] Air compressor ?

[William Jahn]

I know. Trouble is this new pipe is not perfectly round , probably made off
shore and I have now way of making it perfectly round , if it were I
wouldn't have this issue. I've use many compression fittings before yet
never had a copper pipe that was not round. I'm afraid if I tighten the
fittings more it's not going to make the ferrules fit any better, more than
likely it will make the leak worse.  And I'll end up over  tightening the
fittings and be right back where I was before.

On Sat, Jul 25, 2020 at 8:55 PM Brion Sabbatino <brionsab at msn.com> wrote:

> There should be no sealants used on compression or flare fittings.
>
> The fitting creates the seal.
>
> Sealants when used on these fitting frequently cause a leak.
>
> How many times I would arrive at a job with a leaking fitting, clean off
> the Teflon tape or sealant, and reassemble it leak free.
>
> Brion S
> S. Utah
>
> ________________________________
> From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> on
> behalf of William Jahn <willjahn975 at gmail.com>
> Sent: Saturday, July 25, 2020 9:34:27 PM
> To: type3 at vwtype3.org <type3 at vwtype3.org>
> Subject: [T3] Air compressor ?
>
> I have an older sears with a 12 gallon tank. The copper pipe from the head
> to the check valve was leaking and I never noticed this. At some point
> someone over tightened the compression fitting at the head and collapsed
> the pipe via the brass ferrule. I replaced the check valve it was shot,
> tried to clean it yet every few cycles it would leak and trip the circuit
> breaker.
>
>  I got a new pipe and 1/2" compression fittings. The new pipe I got had the
> 90 degree bend and I don't have sand or a tubing bender.
>
>  I fit the new pipe and had to cut it , it was a bit longer. The trouble is
> for whatever reason the pipe is not perfectly round so on each end the
> ferrules both have a small gap between the ferrules and pipe it's less than
> an 1/8 wide and .010" at the center the ferrules fit well into the fittings
> and check valve and all around the copper tube except that one spot so it
> leaks a bit only while it's running. I tried pipe tape that helped a bit.
> It's not as bad as the old pipe . I know how to use a tubing cutter and I
> removed the inside burrs.
>
>  What can I use to seal the small gap? I thought I could just flow a bit of
> solder in the gap or perhaps silicone like ultra copper . Something that
> does not blow out. It works fine and the tank holds pressure now and does
> not trip the breaker .
>  I can let it be yet any leak does cause the compressor to run a bit longer
> and as the pressure goes into the tank even a small leak can draw in
> moisture or fine dust it creates a small vacuum.
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