Thread Tools Display Modes
Old 07-09-2013, 08:49 PM   #1
buzzmonster's Avatar
Join Date: Aug 2010
Posts: 76
Tornado Tank Rinser - Back flow valve


I have just installed the tornado tank rinser, on the black tank and I followed the instructions and installed the back flow preventer on between the clear plastic hose and the jet head that goes into the tank.

Just tested it and the back flow preventer releases clean water when I shut off the rinse, is this normal ? I assume it is and that there is a non return valve somewhere in the tornado head that prevents the mucky stuff coming out of the tank through the head ?

Dont want a smelly mess on my hands next rip !!!

2011 F150 Ecoboost Screw 4x4 c/w max tow
2010 Roo 21RS
buzzmonster is offline   Reply With Quote
Old 07-10-2013, 06:48 AM   #2
buzzmonster's Avatar
Join Date: Aug 2010
Posts: 76
Anyone had a similar experience ?

2011 F150 Ecoboost Screw 4x4 c/w max tow
2010 Roo 21RS
buzzmonster is offline   Reply With Quote
Old 07-10-2013, 07:04 AM   #3
Moderator Emeritus
Dave_Monica's Avatar
Join Date: Sep 2007
Location: Ontario, Canada
Posts: 4,329
If you're asking if the connection is still pressurized when you're done flushing, yes mine's the same.


Nights camped in 2013 - 55, 2014 - 105, 2015 - 63
Dave_Monica is offline   Reply With Quote
Old 07-10-2013, 07:13 AM   #4
Junior Member
Join Date: Apr 2012
Posts: 19
Yes, that is normal and it is working correctly.
gatogonow is offline   Reply With Quote
Old 07-31-2013, 08:55 PM   #5
Senior Member
kerrlakelover's Avatar
Join Date: Jul 2013
Location: Wake Forest, NC
Posts: 498
buzzmonster, I installed tank rinsers in both the black and gray tanks on our 2005 Flagstaff back in 2006. When I put the bottom pan back on I left a small access hole just below each tank where the rinser was installed. Occassionally I would get a few drips of water from the backflow valve. So, like the other guys, I think it is normal. BTW, if you put the rinser in trying to make the tank meter more reliable...don't hold your breath. I always began the rinser as soon as I pulled the gate valve for each tank in order to prevent anything from sticking to the tank walls. I ran the water until all water coming out of each tank was clear. Guess what, the gauge was still unreliable and a piece of "crap". No pun intended. LOL
kerrlakelover is offline   Reply With Quote
Old 07-31-2013, 09:07 PM   #6
Join Date: Jun 2013
Posts: 87
Just had to deal with a black tank rinse issue on a factory installed system. I learned a lot in doing the work myself. As it turns out the hose connection goes way up a pex pipe to a spot by the master bath vanity that is very hard to get to. It enters a B&B 517 vacuum break backflow device, then exits back down to the sprayer in the tank. When you put water in the hose connection it closes the vacuum break and opens the backflow valve and water (normally) goes to the sprayer. It also makes a very loud vibration noise. When you disconnect the hose when you are done, the backflow valve closes, the vacuum break opens and the water up to the B&B 517 pours out of the hose connection. This is normal operation.

In our case it worked 5 times right and then the 6th, 7th, and 8th time the vacuum break didn't close and water came dripping down into the cargo bay. Contacted B&B, they sent a new 517 and an envelope to send back the defective one.

My guess is that the water from the backflow valve to the sprayer stays in the pipe until the next use, unless some air can leak into the pipe from the sprayer end. Kind of like putting your finger over the end of a straw and pulling it out of a glass of water.


2012 GMC 3500 Duramax Crew Cab, SuperGlide 20k
2014 Cedar Creek 36B4, LP Onan, Level-Up, Trail-Air pin, electric fridge
Campwell 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

» Virginia Campgrounds

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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:58 AM.