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Posted by Bob D. on September 09, 2008 at 09:27:50:
In Reply to: pipping posted by JOE on September 09, 2008 at 08:59:57:
Dude, I'm going to assume you're talking about piping up the steam trap outlet (discharge) with SCH 80, or XS (eXtra Strong), pipe. The reason you do this is because the SCH 80 (or XS) has thicker walls, and will last a lot longer than SCH 40 or STD pipe due to the corrosive nature of many condensate systems. In a lot of condensate systems, there is a lot of carbon dioxide present, which dissolves into the water to form carbonic acid. This acid "eats up" the piping in pretty short order if you're not careful. For the next guy that has to work on this, think about (and allow for) how you would take the system apart next time, when you have to replace lengths of pipe.
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