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Old 07-27-2017, 09:36 PM   #1
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What's this?

Upgraded bathroom faucets this week. In the process, found additional piping under the sink. See attached pic. Anyone know what this is?Click image for larger version

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Old 07-27-2017, 09:44 PM   #2
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Pic is too dark to see anything other than the pipes and a "flow" direction to the white pipe.

Also, which coach?
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Old 07-27-2017, 09:46 PM   #3
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Yeah, I know. Not a lot of room to maneuver. 2016 Challenger 37kt.
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Old 07-27-2017, 09:53 PM   #4
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Almost looks like a vacuum breaker.
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Old 07-27-2017, 10:00 PM   #5
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I vote for vacuum breaker too. White pipe appears to be the fresh water line coming in. Could be for the tank "buzz" cleaner too? Needs a breaker so your tank isn't sucked back into the city line.
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Old 07-27-2017, 10:20 PM   #6
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Originally Posted by camperguy99 View Post
I vote for vacuum breaker too. White pipe appears to be the fresh water line coming in. Could be for the tank "buzz" cleaner too? Needs a breaker so your tank isn't sucked back into the city line.
Nope, flow indicator is "to" the white pipe.
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Old 07-27-2017, 11:14 PM   #7
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Vacuum breaker to the black tank flush system.
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Old 07-27-2017, 11:49 PM   #8
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Red hot
Blue cold
White vent
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Old 07-28-2017, 02:13 PM   #9
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Originally Posted by Travelin' Texans View Post
Vacuum breaker to the black tank flush system.
Yup that's it. When you disconnect flush hose - a lot of clear/fresh water should come out.
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Old 07-28-2017, 04:28 PM   #10
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Thanks to all for the replies.
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