Posted by hj on July 14, 2004 at 09:40:00:
In Reply to: Re: fire sprinklers posted by LonnythePlumber on July 13, 2004 at 09:27:45:
Fire systems and heating systems are both "closed" systems with no water added once they are filled, unless there is a leak. Therefore, without the continual exposure to "fresh" oxygen, those systems do not deteriorate in the presence of water. A domestic water system is always adding fresh water to the system so black pipe would be subject to rusting and premature failure.
: : :I believe fire sprinkler systems are done with black pipe, not galv. If I am wrong on this I am sure Sylvan will straighten me out. And for that matter, if I am correct, I don't actually know the reason. He could help me out.
: That's true and we use black on hot water boiler piping. LonnythePlumber