Reply
 
Thread Tools Display Modes
 
Old 08-05-2014, 06:23 PM   #1
Senior Member
 
atom ant's Avatar
 
Join Date: Feb 2013
Posts: 6,978
Odiferous

OK

I like to sleep with the window open above the bed and the maxair fan on low. (my wife hates me).

I used the bathroom fan - wrong! The bathroom smelled, and under the sink was terrible. I think others have complained of the same on the 36RL and some others. In addition to an anti-syphon vent for the gray tank under the sink, there is in fact also the vacuum breaker associated with the black tank flush system. By design, this is an elevated valve that closes when pressurized to allow water to go into the tank, but when the pressure is off, it opens to allow air into the top and drain water down into the tank to provide an air-gap between the domestic supply and blank tank water. The maxair fan pulls a slight vacuum and draws air directly out of the black tank into the bathroom - YUK.

My fix will be two quarter turn inline valves under the sink, one on each side of the vacuum break, to isolate that system when I am not flushing. I will do both sides, so I don't accidentally dead head that cheap plastic vent and break it if I forget to open them when flushing.

Parts should be "amazon"ed to my house Wed, along with the pex tool. Anyone else come up with a better solution that doesn't compromise the purpose of the anti-syphon valve?

__________________
Brad & Dory - Lone Tree, CO
CURRENT - 2013 Itasca Meridian 42E/2013 Wrangler 4dr Sahara
SOLD - 2014 Redwood 36RL/2014 F350 DRW
atom ant is offline   Reply With Quote
Old 08-05-2014, 06:27 PM   #2
Senior Member
 
Radio_Flyer's Avatar
 
Join Date: Sep 2012
Posts: 436
I ended up replacing the the anti-siphon valve with a couple brass fittings and a brass
Camco 23303 1/2" Back-Flow Preventer. Not only did it get rid of the bad leak, I haven't had any odors at all.
__________________
Skip & Patty
2013 Redwood 36RL
2015 Ram 3500 Laramie CC DRW 4x4 (Bertha)
USN Retired

Radio_Flyer is offline   Reply With Quote
Old 08-05-2014, 06:42 PM   #3
Senior Member
 
atom ant's Avatar
 
Join Date: Feb 2013
Posts: 6,978
That might have been a cleaner resolve - I'll have to give that some thought before I dig into this!
__________________
Brad & Dory - Lone Tree, CO
CURRENT - 2013 Itasca Meridian 42E/2013 Wrangler 4dr Sahara
SOLD - 2014 Redwood 36RL/2014 F350 DRW
atom ant is offline   Reply With Quote
Old 08-05-2014, 06:45 PM   #4
Senior Member
 
Radio_Flyer's Avatar
 
Join Date: Sep 2012
Posts: 436
I can take a picture and post it this weekend for you. Not getting to the rig anytime sooner.
__________________
Skip & Patty
2013 Redwood 36RL
2015 Ram 3500 Laramie CC DRW 4x4 (Bertha)
USN Retired

Radio_Flyer is offline   Reply With Quote
Old 08-05-2014, 10:23 PM   #5
Senior Member
 
travelin' texans's Avatar
 
Join Date: Sep 2012
Posts: 2,541
I added a water hose shut off on flush inlet in the convenience center, no more smell. The only smell I have now is when it's time to drain galley, it smells worse than the black.
__________________

Danny & Linda
Fulltimers since 2008
2013 Denali 3500 drw 4x4 d/a
2013 RW 36 FB black & tan
travelin' texans is offline   Reply With Quote
Old 08-05-2014, 10:31 PM   #6
Senior Member
 
atom ant's Avatar
 
Join Date: Feb 2013
Posts: 6,978
Quote:
Originally Posted by travelin' texans View Post
I added a water hose shut off on flush inlet in the convenience center, no more smell. The only smell I have now is when it's time to drain galley, it smells worse than the black.
Danny,
I'm not sure that would cure my problem - as you can see from my diagram, when the spring loaded vacuum break under the sink opens, it stays open and allows direct airflow from the tank up through that vacuum break. Valving upstream of the vacuum break wouldn't necessarily stop that.
__________________
Brad & Dory - Lone Tree, CO
CURRENT - 2013 Itasca Meridian 42E/2013 Wrangler 4dr Sahara
SOLD - 2014 Redwood 36RL/2014 F350 DRW
atom ant is offline   Reply With Quote
Old 08-05-2014, 11:19 PM   #7
Senior Member
 
johnboytoo's Avatar
 
Join Date: Jul 2013
Posts: 2,050
I've never had an odor but maybe I've been preemptive in that I've used this stuff for a long time... not every fillup, but most times...
__________________
Ours: '11 Monaco Diplomat 43DFT followed closely by '14 Jeep 4 dr Wrangler.
Hers: '13 Explorer Sport - AWD 365hp baby-better than her Audi Q5!
Previous: '13 Ford F350 CC Platinum and '13 38GK
johnboytoo is offline   Reply With Quote
Old 08-05-2014, 11:27 PM   #8
lwg
Senior Member
 
lwg's Avatar
 
Join Date: Jun 2013
Posts: 918
I've noticed that if I don't open a window and run the bathroom exhaust Maxxfan for any length of time I get a serious gray tank odor in the bedroom/bathroom. Turns out we get the smell from the washer drain. Even though it's essentially plugged with clay to somewhat seal it odor still manages to find its way up the pipe.
__________________
2014 Redwood 38BR, Fulltiming
2013 Ford F-350 CCSB 6.7L 4x4 SRW, B&W Companion Hitch, Air Bags
lwg is offline   Reply With Quote
Old 08-05-2014, 11:47 PM   #9
Senior Member
 
travelin' texans's Avatar
 
Join Date: Sep 2012
Posts: 2,541
I don't know Brad, but since I added that valve we don't get the odor, maybe it helps vac breaker to work?
__________________

Danny & Linda
Fulltimers since 2008
2013 Denali 3500 drw 4x4 d/a
2013 RW 36 FB black & tan
travelin' texans is offline   Reply With Quote
Old 08-07-2014, 03:32 AM   #10
Senior Member
 
johnboytoo's Avatar
 
Join Date: Jul 2013
Posts: 2,050
Well THANK YOU VERY MUCH .... Now we have a horrible odor --- mostly in the basement, but seeps inside...

Haven't been in ours since our last trip in May - been in storage with dead batteries - I repaired the 4/0 cable & cable end that came apart and got it charged so decided to take one last summer fling and WOW....

too bad we can't take pictures of smells
left fans on underneath with doors open and lysol'ed it while we go out to dinner...

my elimonate and black tank stuff didn't do a thing for it...

hopefully running water thru it will rinse it out !

Whew - hope we don't have to get a hotel room
__________________
Ours: '11 Monaco Diplomat 43DFT followed closely by '14 Jeep 4 dr Wrangler.
Hers: '13 Explorer Sport - AWD 365hp baby-better than her Audi Q5!
Previous: '13 Ford F350 CC Platinum and '13 38GK
johnboytoo is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT +1. The time now is 02:17 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.