water systems: Things to know about your home. 11 - 08/10/11 05:02 PM
Did you ever see a 3 pipe or 4 pipe water system?  Well, it is more common than you think.
Let's see 3 pipes.  What could they be hot, cold, and (hmmmm) warm?  Could it be hot, cold, and very cold?  That would be nice, wouldn't it.  Well, normally it isn't either of those things.  Then what about these third or even fourth pipes? Maybe the plumber had some left over pipe (yeah that's it)?
Actually, I find these real common in larger houses 40+ years old.  The third and fourth pipes could be several things, but most commonly they are … (3 comments)


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