I have a situation (water filter mounting) where a couple of
3/4" x 3" NPT pipe nipples would work perfectly, but got a
shock when I saw the price on those in brass ($15 each at
Lowes). So I decided to ues PVC nipples, but then noticed
on the tag, "For outdoor use only". Of course, no
In scrambling to find other options, I noticed some very
nicely molded white PVC fittings, but they didn't have the
"For outdoor use only" tags. But no nipples.
I've noticed that the gray nipples have a decidedly
different feel than the white fittings.
On some of the white fittings, made by Dura, I see (in some
embossed printing) "PVC-1". I don't notice that in the gray
I've searched a lot on the web, but can't find an
explanation as to the difference between white and gray PVC,
nor why the gray is for outdoor use only, nor whether either
are ok for drinking water applications. Even the Dura
website was silent on this.
Would 3/4" x 3" brass nipples at $5.50 each solve the problem?
or SCH 80 PVC
I wouldn't put too much credence in a notification tagged to a PVC
fitting as to its universality.
But OTOH if the mfr says "outdoor use only", I'd take them at their
word.... perhaps it is CYA disclaimer.
White, grey or black PVC (SCH 40 or SCH 80) all are suitable for
plumbing.... check Ryan Herco or McMaster.
Sunlight resistant PVC conduit is a light grey.
In your case I'd bite the bullet & get brass or use SCH 80 grey PVC
theres also more than one quality of PVC fittings
DWV drain waste vent, and pressure type
oddly home depot sells schedule 40 pressure pipe, but only drain waste
my best friend learned this the hard way after a elbow broke under
you have been warned........
Could it possible be that they are referring to PVC not being
reccommended for indoor plumbing ? Possibly CPVC fittings
would be acceptable.....
The difference would be that PVC is taboo for hot water lines, and
hot water lines aren't run outdoors...... Just thinking out loud.....
Nowhere did you mention the type of plumbing you have in the house.
You can get galvanized steel elbows for a couple bucks. But if you have
copper, then stick with copper. f you have PVC, use that....
I've never seen pvc labelled "Outdoor only". As others said, Gray is
for electrical, but can be used indoors or outdoors. White is not good
outdoors when exposed to the sun because it deteriorates from sun.
I'd really like to know what this "outdoor only" stuff is called?
You have to tell is what you have for plumbing to get help on here.
All this hullabaloo over two $15 nipples?
The brass nipples are the right part, right now. You can order them
online cheaper, but that delays the deployment of your filter. All to
save $20. If that much.
I would buy the nipples, grumble about the price, install them, get
over it, and enjoy the water filter.
I have the exact same problem, but Im not talking just 2 PVC nipples, I am
developing a leak detection and auto shut off system that will be manufactu
red in volume. Each unit uses 3 schedule 80 PVC nipples and when you build
even 25 units, the cost savings are tremendous over brass or other materia
ls- right now we are planning on production runs of 100, so this cost savin
gs is even more important.
Now, at Home Depot, I can get these 4" PVC Grey nipples that have the tag "
OUTDOOR USE ONLY" for $0.79. I can get the same sch 80 4" nipples from McM
aster-Carr for $1.56. The only difference is McMaster says their piping is
NSF 61 certified for use with drinking (potable) water.
Obviously on my product, I will choose the latter just to be safe since my
product will have drinking water running through it. However, I want to kn
ow why I am paying more...Is the only difference the certification itself,
where McMaster has to up their price to cover extra cost of certifying thei
r products, or is their an actual difference in material or manufacturing p
rocess that makes the Home Depot nipples not safe for potable water applica
tions??? Or is the "OUTDOOR USE ONLY" statement merely there so people don'
t bust a leak inside their homes, and it is OK to run potable water through
these nipples as long as its outside?? You would think that if it was unsa
fe for drinking water, they would have a specific tag just for that. I mea
n people drink outside too right???
Why don't you contact the manufacturer for technical information and what is
and what is not certified. A Google search will find a number of
manufacturers, most likely their tech. department will be willing to provide
you with the information and recommendations for your product, particularly
if you will be needing larger quantities when you are finished developing
your product. You certainly will want to buy wholesale not at a retailer
such as Home Depot or a semi-retailer as McMaster.
On 3/11/2014 1:39 PM, email@example.com wrote:
There can be...there's still concern that Chinese and other imports may
still contain leachable Pb as lead was the most commonly used stabilizer
there. So, if it is going to be in a potable water system you'd be
derelict to not use that that is certified for such use. No guarantee
it'll not be found to have some other trace problem in the future, of
course, but you'll be clear of any negligence/liability on that score as
best knew at the time. And, of course, when you go into production
you'll be keeping such QC records to prove it... :)
This is relatively recent--last fall when the above article was published.
On Tue, 11 Mar 2014 11:39:22 -0700 (PDT), firstname.lastname@example.org wrote:
It sounds like you are looking at the nipples in the sprinkler
department (irrigation). You want to look at the schedule 80 stuff
near the galvanized (at least in my store),. That is what McM/C is
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.