COMMUNITY FORUM

cambo1

05:44AM | 04/28/04
Member Since: 04/27/04
2 lifetime posts
Bvplumbing
Please!!

I need to know the merits of Copper and Plastic for home water pluming application.

Is 3/4th plastic o.k.up to the secondary lines (before tub, fauset etc)?

Is there a way of cleaning buildup inside plastic and copper pipes?

Is buildup more likly in copper than plastic?

none.

plumber Tom

03:57PM | 04/29/04
Member Since: 05/10/03
801 lifetime posts
And get general comments and suggestions from the Fix-it-For'em. No "old school" plumber will even think about CPVC. The lines are flimsy and need extra support hangers. If not supported properly (In some cases every 3') the lines look like an old rope hanging in a barn. However CPVC is less labor intense then copper to install. Any plastic pipe is. Yes it's ok to run 3/4 then branch off with 1/2. And yes a water softener will reduce build-up.

Gary Slusser

06:36AM | 04/30/04
Member Since: 02/17/04
112 lifetime posts
In my opinion, the type of water line material should be dictated by the quaity of the water to be run through it. Th NSF Standard 61 does not allow copper if the the pH of the water is < 6.5. And yes I know most folks think that low pH water is not a problem, but I know it is and anyone can look it up with a quick google search. I also know tha tlow pH is not the only thing that can cause copper problems. Things like disimiliar metals, bacteria and errosion corrosion along wit helectrical grounds and electrical systems using the copper lines as the building's electrical ground electrode. They can all cause problems like pinhole leaks.

I am not against the use of copper, but I believe that if water quality is a concern, you'll do better with plactics. Especially PEX. I'm not wild about the ID of CPVC and I suggest the use of the next larger size than you'd use with copper, but it is a very good material. PEX has a reduced ID also, but run in one piece without fittings in the run (homerun), the ID delivers more water than copper with a bunch of fitting pressure losses in the run.

As far as the ID of whatever material, you have to know flow rates and peak demand of the system to properly size the pipe. You odn't just pick one out of the air. lol

You usually can not clean scale etc. out of a pipe once it forms but IMO you'll have more potential for scale to form in copper than in plastic.

Gary

Quality Water Associates

cambo1

07:55AM | 05/01/04
Member Since: 04/27/04
2 lifetime posts
Thank you for the replys, Good advise.
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