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Old 06-28-2013, 02:42 PM   #1
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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.

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Old 06-29-2013, 06:04 AM   #2
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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.
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Old 06-29-2013, 06:36 AM   #3
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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.

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Old 06-29-2013, 06:46 AM   #4
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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.
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Old 06-29-2013, 07:32 AM   #5
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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.
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Old 06-29-2013, 12:03 PM   #6
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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.

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