Quote:
Originally Posted by llr
whats above them? Knowing whats above makes it much easier to determine. Also a year make and model helps.
2 together is generally low point drains but 1 is generally red and it would need a valve inside as there is nothing below.
The one by itself maybe a fresh water drain.
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The one by itself is the fresh water drain. The two others aren't the low point drains, those are elsewhere. Above this is the living room, fireplace, tv. Not really anything water related. These look like vents? maybe there is some kind of overpressure on the fresh water tank?