Thread Tools Search this Thread Display Modes
Old 08-08-2014, 08:43 PM   #1
1 Rivet Member
1975 31' Sovereign
Punta Gorda , Florida
Join Date: Mar 2014
Posts: 13
flushing out the Black Water Tank...

Been in the AS for a little over a month now, and had to flush out the Black Water Tank already. Just thought that that was pretty quick to have to do that, it was a regular maintenance thing, but didn't think I was going to have to do it so soon. Any thoughts, or comments??

meswoss is offline   Reply With Quote
Old 08-08-2014, 09:28 PM   #2
Rivet Master
TBRich's Avatar

2006 19' Safari SE
Tucson , Arizona
Join Date: Jun 2007
Posts: 4,610
Images: 64
The way your post is worded makes me think that perhaps you are hooked up to a sewer system ... and might be leaving your black tank valve open all the time. If you do this, the liquids will drain away and the solids will stay behind to build up and cause potential problems and more than usual need for black tank flushing maintenance. Even if you are physically hooked up to the sewer with a hose, you should leave the black tank valve closed until the tank is 3/4 full or better... then dump ... and close the valve until it's time to dump again. The force of the accumulated liquid will help wash out the solids.

You can leave your gray tank valve open all the time if you want, without causing issues ... but you might consider closing it the day before you plan to dump the black tank... The after you dump the black tank, close the black tank valve and dump the grey tank...the grey water will help rinse out the sewer hose. Then you can leave the grey open until the next time you plan to dump the black. There is no need to unhook the sewer hose each time unless you want to.

If you use chemicals in your black tank, they will help the solids break down as you wait to dump and will help control odors. Also remember to leave a little water in the bottom of the toilet bowel to keep sewer odors from coming up through the toilet.

If you follow this cycle you should not have to do a complete and thorough flush out all that often...

Good luck!

TB & Greg and Abbey Schnauzer
AirForums #21900 . Membership Chair & PastPrez, 4CU/WBCCI
Travel Log: AZBambi...On the Road Again
TBRich is offline   Reply With Quote
Old 08-08-2014, 10:59 PM   #3
Rivet Master
Foiled Again's Avatar
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach , Virginia
Join Date: Sep 2004
Posts: 6,847
What TB Rich said - about "the black hills" especially.

Even if you're a single person draining and rinsing the tank - once a week in hot weather, a bit less often in cool weather. It doesn't have to be full to be ripe.

And putting about 5 gallons in the gray tank while draining the black tank is a good "rinse" for the stinky slinky after draining the black tank.

Today is a gift, that's why they call it the present.
Foiled Again is online now   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
25 Foot 2014 FC steps for flushing and emptying black water tank DogGonnit Airstream Trailer Forums 5 09-15-2014 06:28 PM
Black Water flushing - problem with 2006 Classic suzieleigh Waste Systems, Tanks & Totes 9 07-07-2014 05:28 PM
Black tank flushing beetlebob Plumbing - Systems & Fixtures 17 09-14-2013 06:52 AM
Black colored water when flushing toilet Mikec1231 Plumbing - Systems & Fixtures 3 06-20-2013 07:09 PM
Flushing Black Water Tank ViewRVs General Motorhome Topics 3 05-16-2002 03:59 PM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:10 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.