Thread Tools Display Modes
Old 06-28-2013, 02:42 PM   #1
Junior Member
Join Date: Jun 2013
Location: Clarksville, TN
Posts: 2
Leak when flushing black water tank

I have a 2008 Rockwood Signature Ultra-Lite 8314SS camper with the built in black water flush system. When I try flushing the black water tank within minutes I start getting water leakage around the shower on the floor in the bathroom. And water dripping down off the outside BB grill gas connections and the bottom is enclosed but has a vent screen in the center. Water comes out of there as well. I've read some of the previous threads concerning flush system issues and was wondering if it could be a check valve (anti-siphon valve). I've looked before but don't remember seeing a check valve on the flush system hose coming into the camper. Does anybody know where it might be on my particular camper? And does anybody have any other ideals as to what is causing the leak? The leak occurs with the black water shut-off valve open or closed.

hawk16282101 is offline   Reply With Quote
Old 06-29-2013, 06:04 AM   #2
Site Team - Lou
Herk7769's Avatar
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,383
Most (but certainly not all) are located in the bathroom vanity.
Looking at your floorplan it "might" not be.

I hope it is NOT under the shower pan.

Your troubleshooting skills are right on. Sounds like a fitting is leaking.
Attached Thumbnails
Click image for larger version

Name:	8314SS.gif
Views:	101
Size:	39.5 KB
ID:	34203  
Attached Images


Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
Herk7769 is offline   Reply With Quote
Old 06-29-2013, 06:36 AM   #3
Jack of All Trades
RJHuser's Avatar
Join Date: Oct 2010
Location: Fletcher, Ohio
Posts: 282
On my TT, the back flow preventer is mounted behind the shower enclosure. There is an access hatch in the wall behind the shower (on my TT, that is inside a cabinet below the entertainment center). Look around for an access hatch about 6 to 8 inches square.

Rick & Debbie; Brandy & Schnoodle (Dexter & Fritz R.I.P.) the Doxie "Kids"
2015 Jayco Pinnacle 36RSQS 5'er
2018 GMC Sierra Denali 3500HD, 6.6L Diesel Dually; B&W Companion 5'er hitch
ScanGauge, TST 507 TPMS
RJHuser is offline   Reply With Quote
Old 06-29-2013, 06:46 AM   #4
Senior Member
Join Date: Dec 2012
Location: Windsor, Ontario, Canada
Posts: 643
I would look at all the connections of the flush water line. That's in the side storage area and under the bathroom vanity in my trailer. When I 1st got it new I found that all the fittings were loose and water sprayed everywhere. Good luck.
Pipeman is offline   Reply With Quote
Old 06-29-2013, 07:32 AM   #5
Junior Member
Join Date: Jun 2011
Posts: 20
We would have the same problem with our sprinkler system and then you don't have the valve on all the way the back flow preventer bleeds all of the water going through the valve so if you only had the valve open half way when flushing your tank or if you were using your internal pump to flush the tank than there might not of been enough water pressure and the back flow preventer might have kicked in.
Matthewsbj1 is offline   Reply With Quote
Old 06-29-2013, 12:03 PM   #6
Junior Member
Join Date: Jun 2013
Location: Clarksville, TN
Posts: 2
Thank You All!!

Just got on and checked for suggestions. Thank You All for Your suggestions and help. RJHuser, that's exactly were I found the anti-siphon valve.

hawk16282101 is offline   Reply With Quote

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 is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 05:16 AM.