[Shop-talk] Fwd: Plumbing fun

[Ian McFetridge]

My house has some of these fittings that I had never seen before:
https://www.milwaukeetool.com/Products/Power-Tools/Plumbing-Installation/Press-Tools
They're thicker than normal fittings and have an o-ring that is clamped
down on the pipe to form a seal.   I've not seen leaks at any of them, but
I wonder how that o-ring will age (hoping it is something more stable than
natural rubber!)  They're kind of like a hybrid of the pex crimping, but on
copper

On Thu, Aug 1, 2019 at 4:46 PM David Scheidt via Shop-talk <
shop-talk at autox.team.net> wrote:

> On Thu, Aug 1, 2019 at 10:00 AM Pat Horne via Shop-talk
> <shop-talk at autox.team.net> wrote:
> >
> > My understanding is that plumbers use the expansion method of
> termination because it is easier, faster & cheaper. They also don’t need to
> stock the crimp rings.
>
>
> There are other advantages, for one expansion fittings are closer to
> full flow.  It also requires good quality tubing (pex-a), and not the
> cheap stuff on offer at the borg. It's also possible to tell visually
> inspect the joint and see that the fitting is properly installed.  The
> joints also tend to get stronger over time,as the pex wants to
> contract to its original diameter, so it grabs tighter on the fitting.
> Expansion fittings do require an expansion ring, so they do have extra
> parts to stock.
>
>
> --
> David Scheidt
> dmscheidt at gmail.com
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