Chaparral fresh water drain
Assuming they are all grouped together the capped pipe is the fresh water drain and the one or two uncapped lines are fresh water tank overfill drains.
I cut the cap fitting and put this valve on.
BestPEX 51249 Metal Chrome 1/4 Turn Straight Valve, 0.5" Size https://www.amazon.com/dp/B002Z9B6U2..._5K8XBbBCHD5CM
This valve is better suited if you donít have a pex crimp tool. I have used both and they work great.
Flair-It 16880 Plastic Straight Stop Valve, 0.5" Size https://www.amazon.com/dp/B000BOKOUQ..._PL8XBb007GXP3
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