PVC or galvanize for outside on wall


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Old 02-02-16, 03:05 PM
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PVC or galvanize for outside on wall

Recently installed a water softener, outside of house in it's own housing, and in the process I tapped off the supply line from the street to run the outside faucets with PVC. Have 1 outside faucet on the other side of the house which I need to run a line to. In order to do so I need to run a line up the outside of the wall of the house and then make an elbow into the attic where I'll tie into it with pex and run to the other side of the house. When I run it up the wall I could use either PVC or galvanized. Galvanized is good for the strength and PVC for easability. We are talking about a 9 foot section of the wall which is brick that it'll be secured to that I have to go up. I'll have to drill through the brick and feed the pipe through it. Location isn't an area disturbed by anything so it'll be almost never be touched.

House is on slab and we rarely freeze and even when it does it always gets above freezing during the day so freezing isn't a concern. Still, I am planning on insulating.

Am wondering what others thoughts are on which to use?
 
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Old 02-02-16, 03:27 PM
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Do you have the option of trenching from the origin to the destination and burying it? Out of the elements, away from striking danger, and absolutely no freezing.
 
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Old 02-02-16, 04:30 PM
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If you use PVC, you will need to paint it or otherwise protect it from UV exposure as standard PVC can get brittle after UV exposure.

What about copper? For 9' it wouldn't be expensive. I hate using galvanized for water.

Also, use at least 3/4" pipe if you want to have any flow left after all that run. You will lose some pressure going up and over too.
 
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Old 02-02-16, 06:34 PM
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PVC supply's in most areas are not even code to use inside a home plus should never be exposed to UV on the outside.
No way would I use any form of steel pipe!!!
Just blows 95%of us away when we here or see exposed pipes on the outside of a house, cold temp's or not.
They make a brown PEX that's UV safe, and you could make the whole run with no fittings.
 
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Old 02-02-16, 07:48 PM
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Thanks everyone for your comments. Trenching would be good if possible. Unfortunately, it is over 120' to go around the place and the need to trench under a cement walk and whatever else I'm not certain. The uv resistant pex, single layer, is only designed for up to 6 months of exposure from my readings, not years so it isn't an option unless I missed something. I'll probably go the PVC route since it is the easiest for me. I don't want to sweat pipes and I haven't an interest in push fittings. Galvanized would be fine but getting it threaded if needed would be a pain. No PVC is ran through the house. Just the bit that goes through the brick and into the house, maybe a foot. I've had to re-plumb a former house to pass code since the previous owner did PVC for everything so I'm not going to do that in this place. This line is also a dedicated line to the outside faucet.

I understand the sentiment on seeing plumbing ran on the outside of a house. It's unsightly. Fortunately, I have a corner it'll be in so it'll help hide it. I would avoid if I could. If it wasn't a brick wall I would consider putting the line in just above the foundation and going up the wall.

Again, thanks for everyone's inputs.
 
 

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