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02-17-2019, 01:28 PM
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#1
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Sewer smell under bathroom sink 25ft airstream international 2015
We are at a campground where they come and pump your tanks
Today they pumped it and there is an open hole under the sink in the bathroom and it smells horrible. Sewer smell
What could have happened and what do we need to do [emoji15]help
The tank was 100 % full
Please help we have 10 more days and not sure we can stay unit with that smell[emoji30]
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02-17-2019, 02:52 PM
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#2
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Rivet Master
1991 25' Excella
2011 19' Flying Cloud
Santa Ynez
, California
Join Date: Jan 2017
Posts: 1,185
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Open hole under the sink? Picture would help, shot in the dark guess is the air admittance valve failed from the vacuum the truck put on your system.
__________________
Good judgment comes from experience, and a lot of that comes from bad judgment.
Will Rogers
Alan
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02-17-2019, 04:00 PM
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#3
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by AlinCal
Open hole under the sink? Picture would help, shot in the dark guess is the air admittance valve failed from the vacuum the truck put on your system.
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Tried to attach a photo
How do you fix the problem you mentioned
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02-17-2019, 04:00 PM
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#4
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by heikeet
tried to attach a photo
how do you fix the problem you mentioned
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02-17-2019, 04:02 PM
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#5
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by AlinCal
Open hole under the sink? Picture would help, shot in the dark guess is the air admittance valve failed from the vacuum the truck put on your system.
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Looks like the lavatory sink may drain into the black tank as well ????
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02-17-2019, 04:13 PM
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#6
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Rivet Master
1991 25' Excella
2011 19' Flying Cloud
Santa Ynez
, California
Join Date: Jan 2017
Posts: 1,185
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So if it is the air admittance vavle its probably just indide the wall opening, you can try covering it up with a bag and tape to seal until you can replace it. They normally unthread.
The use of a pumper truck sucking your tanks empty was talked about some time ago, you can lessen the chance of vacuum damage by holding the toilet flush open during this process.
Also ask the driver not to use maximum suction.
__________________
Good judgment comes from experience, and a lot of that comes from bad judgment.
Will Rogers
Alan
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02-17-2019, 04:25 PM
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#7
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Rivet Master
2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 9,180
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If they used strong suction to clear your tanks, you may need to refill the sink trap with water. Run about 2-3 cups of water down the sink and see if the odor ends.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
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02-17-2019, 04:36 PM
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#8
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by AlinCal
So if it is the air admittance vavle its probably just indide the wall opening, you can try covering it up with a bag and tape to seal until you can replace it. They normally unthread.
The use of a pumper truck sucking your tanks empty was talked about some time ago, you can lessen the chance of vacuum damage by holding the toilet flush open during this process.
Also ask the driver not to use maximum suction.
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Thanks so much [emoji41]
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02-17-2019, 04:38 PM
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#9
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by HeikeET
Thanks so much [emoji41]
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Do you have to order that valve from airstream ?
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02-17-2019, 04:48 PM
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#10
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Rivet Master
1991 25' Excella
2011 19' Flying Cloud
Santa Ynez
, California
Join Date: Jan 2017
Posts: 1,185
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Any plumbing supply and possibly big box like home depot. They are usually 1-1/2" pipe thread.
https://www.amazon.com/s/?ie=UTF8&ke...sl_3b6tzwwde_b
__________________
Good judgment comes from experience, and a lot of that comes from bad judgment.
Will Rogers
Alan
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02-17-2019, 04:51 PM
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#11
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Site Team
2017 30' International
Broomfield
, Colorado
Join Date: Apr 2009
Posts: 3,555
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Sewer smell under bathroom sink 25ft airstream international 2015
Make sure you’ve got some water in the P-trap for the bathroom sink per post #7 above.... [emoji6]
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02-17-2019, 05:17 PM
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#12
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Rivet Master
2016 25' Flying Cloud
Jupiter
, Florida
Join Date: Nov 2015
Posts: 1,140
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Along with the P-trap mentioned above, you also need to get your blank tank primed for the next use cycle, and make sure you have water in the toilet bowl to give you a water seal between the tank and bathroom.
__________________
"A good traveler has no fixed plans, and is not intent on arriving." - Lao Tzu
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02-18-2019, 06:30 AM
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#13
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by SeaLevel
Along with the P-trap mentioned above, you also need to get your blank tank primed for the next use cycle, and make sure you have water in the toilet bowl to give you a water seal between the tank and bathroom.
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Great ...all this helped tremendously
When you say black tank primed
What do you mean. I do understand the part about the water in the toilet
Also other than flushing out the black tank ... mine has an exterior hose connection that rinses the black tank ... is there anything else anyone does to clean the black tank [emoji41]
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02-18-2019, 09:38 AM
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#14
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2 Rivet Member
2015 25' FB Flying Cloud
The Woodlands
, Texas
Join Date: Apr 2015
Posts: 55
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Quote:
Originally Posted by wulfraat
Make sure you’ve got some water in the P-trap for the bathroom sink per post #7 above.... [emoji6]
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We get bad odors in our 2015 25FC from time to time, especially when running the bathroom or shower exhaust fan, the exhaust hood over the stovetop, or the Fantastic fan. Finally figured out that, yes, the bathroom sink is piped to the black tank. Also figured out that after long periods of storage with a dehumidifier running, water in the P-trap evaporates and the sink drain provides an unobstructed connection for vapors to be pulled out of the black tank into the trailer. Running a little water into the sink fixes this.
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02-18-2019, 10:00 PM
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#15
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:SPACE A" S/O 11 Air19745
2006 34' Classic S/O
Fort Worth
, Texas
Join Date: Feb 2007
Posts: 1,766
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When doing any flushing or open toilet valve operation always put the vent fan on "In", not "Out" and motor switch on high. That will push the smell out the tank vent system and not suck it toward you. Phew!
guskmg
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02-19-2019, 01:22 PM
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#16
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Rivet Master
2016 25' Flying Cloud
Jupiter
, Florida
Join Date: Nov 2015
Posts: 1,140
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Quote:
Originally Posted by HeikeET
Great ...all this helped tremendously
When you say black tank primed
What do you mean. [emoji41]
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After emptying and flushing the black tank, you should get it ready for the next use cycle by putting in at least a few gallons of water, and your chemical/product of choice. I fill up the bowl once, put in some Happy Camper, stir it up with the toilet brush, then flush that down. Then I fill up the bowl again, put in some Calgon water softener and flush that down. Then I fill the bowl a third time, squirt in a bunch of Dawn, use that to clean the bowl, and then flush that down. That gets sloshed around while driving, and it gives me a nice base to start from so that there is plenty of water in the black tank to avoid it building up with solids.
Research the GEO Method.
__________________
"A good traveler has no fixed plans, and is not intent on arriving." - Lao Tzu
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02-19-2019, 08:20 PM
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#17
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2 Rivet Member
Join Date: Mar 2014
Posts: 44
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Quote:
Originally Posted by AlinCal
So if it is the air admittance vavle its probably just indide the wall opening, you can try covering it up with a bag and tape to seal until you can replace it. They normally unthread.
The use of a pumper truck sucking your tanks empty was talked about some time ago, you can lessen the chance of vacuum damage by holding the toilet flush open during this process.
Also ask the driver not to use maximum suction.
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What exactly does the air admittance valve do ... because we put the plastic bag over it like suggested ... the smell is gone but we are worried ... worse things might happen with an non-functioning air admittance valve [emoji23]🤣[emoji15]
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02-19-2019, 11:07 PM
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#18
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Rivet Master
2007 22' International CCD
Corona
, California
Join Date: Jul 2013
Posts: 9,180
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It allows drainage to pull air into the plumbing and tanks to break a vacuum that happens when water flows down a drain as evidenced by the typical ‘gurgling’ noise. It’s supposed to allow the intake of air, but not let air flow out of it. Yours is apparently failing to block reverse flow. Most likely the diaphragm is not seating properly or is damaged.
You may notice slow draining or the water in your sink trap not staying in there. Can be cured temporarily by letting the sink drain fully, then running a cup or so of water into the drain to refill the trap.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
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02-20-2019, 06:37 AM
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#19
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Rivet Master
1991 25' Excella
2011 19' Flying Cloud
Santa Ynez
, California
Join Date: Jan 2017
Posts: 1,185
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All traps are typically requirred to have a vent downstream as said to aid draining and prevent the trap from being siphoned dry and loosing it's water seal keeping downstream odors where they belong. In trailers they use the air admin valve to keep from having to run excess vent piping in the trailer and having multiple roof penetrations with a typical vent pipe.
No harm in covering it up temporarily, the sink drain may not work as efficiently but in that short of a drain run and the low water volume from the faucet I doubt you will notice.
__________________
Good judgment comes from experience, and a lot of that comes from bad judgment.
Will Rogers
Alan
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02-24-2019, 11:07 AM
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#20
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New Member
2017 25' Flying Cloud
Poca
, West Virginia
Join Date: Jul 2017
Posts: 1
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I had the same problem. Turned out to be my batteries were over heating and caused the terrible smell. Had to replace batteries.
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