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01-05-2012, 02:58 PM
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#1
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Junior Member
Join Date: Dec 2011
Posts: 17
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This group of Flex lines are underneath my vanity cabinet about 28" tall and go down under the washer dryer cabinet then out into the holding tank bay where they are clamped to the floor (top of bay) and go out of site toward the water works area. It is winter here in Missouri so I have not had the time when weather is nice to investigate any further, anybody have any idea.
Thanks,
Randall
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01-05-2012, 03:10 PM
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#2
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Senior Member
Winnebago Owners Club
Join Date: Aug 2010
Posts: 166
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Looks like a vent that was added to vent drain pipes. Was washer installed after RV bought? Didn't want to take through roof. Any smell under the cabinet? Looks like mold or moisture above the vent. Someone else will chime in. Welcome aboard the forum. Good luck.
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1995 Winnebago Vectra 454 Chevy
1999 Volvo C70 Convertible following on Dolly
2010 Yorkie--Sir Lenny Thomas - Riding Shotgun
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01-05-2012, 03:20 PM
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#3
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Senior Member
Monaco Owners Club
Join Date: Sep 2011
Location: Alaska 6 months out of the year, as for the other 6, somewhere in the Lower 48
Posts: 2,617
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Could also be the drain line hookup for the washer
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US Navy Vet, Liberty Tree Member of Oath Keepers.org, NRA and VFW Life Member, AK EMT.
If you are coming to AK let me know. Love it here and love sharing AK with others.
2009 Safari Cheetah 40 SKQ
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01-05-2012, 03:36 PM
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#4
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Senior Member
Join Date: Feb 2004
Location: Johnstown, PA USA
Posts: 1,965
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Looks like a vent...
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John, Deb; & our dog, Benji, Forever in our hearts.
2006 Gulf Stream BT Cruiser 5231B V-10
2011 Jeep Liberty Jet
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01-05-2012, 03:42 PM
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#5
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Member
National RV Owners Club
Join Date: Dec 2009
Location: St. Augustine, FL
Posts: 42
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It looks like a sewer vent to me. I have one like that under my sink in my kitchen in my S & B house.
David
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01-05-2012, 03:46 PM
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#6
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Member
Join Date: Dec 2011
Location: Albany GA
Posts: 31
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Air Admittance Valve (AAV). Can be used in lieu of plumbing (open pipe) vent systems that penetrate roofs of RVs. The purpose of vents is to allow air to enter the plumbing drainage waste and vent system and equalize pressure when water drains out of the system maintaining the integrity of the water trap that prevents sewer gases from entering the RV hrough fixture drains. When a plumbing fixture is operated, negative pressure causes the AAV to open, allowing air to enter and equalize the pressure in the system. When the flow stops, gravity closes the valve preventing sewer gas from escaping through the valve into the RV.
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01-05-2012, 03:57 PM
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#7
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Senior Member
Join Date: May 2011
Location: Vancouver, WA
Posts: 4,278
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On our two DSDP's we've had it's used in the black tank washout system as a vacuum breaker to prevent backflow.
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2002 Newmar Dutch Star 4090 ISC 350/1050 with Banks Kit, now 435/1200
Charter Good Sam Lifetime Member, FMCA f47302s
RV'ing since 1957, NRA Benefactor Life Member
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01-05-2012, 04:01 PM
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#8
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Member
Freightliner Owners Club
Join Date: Sep 2011
Location: Bowling Green Florida
Posts: 98
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If you have a black tank wash system, it will be the vacuum breaker that prevents any possibility of back syphoning after a washout.
These are absolutely necessary, don't remove it, it will not vent bad gas into your coach.
Occasionally they stick open, and when you go to do a black tank flush, fresh water will pour out of the valve, flooding the immediate area. Normally, they can be dissambeled, and cleaned out, usually some trash that gets into the fresh system, or scale that developes after long storage, and re-installed with no problem.
Good you found it, save you a bunch of anxiety if it sticks!!
Have fun..keep the rubber of the bottom!
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2008 Gs Tour Master, Mercedes MBE926 Power, 2004 Chevy Trailblazer Toad, Amateur Radio Opr KU4SV
FullTime 3 yrs and counting
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01-05-2012, 06:48 PM
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#9
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Junior Member
Join Date: Dec 2011
Posts: 17
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Yep I forgot about the tanks wash thanks for fast reply
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