RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > National RV Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-01-2009, 12:33 PM   #1
Member
 
pixguy's Avatar
 
National RV Owners Club
Join Date: Apr 2009
Posts: 87
Flushing black tank

07 Dolphin
Being new to the job of dumping, I hooked up my fresh water hose to the hose connection that I thought would flush out the black tank completely. But it did not seem to do anything, I did not get any additional water coming out after draining completely and turning on the hose. What am I doing wrong? I guess I could look this up in my manual, but being a man, I thought I'd try you guys first, your more fun!

I also have the same slow draining grey water problem I've read in other threads.

Thanks in advance!
Bill
__________________

__________________
2016 Itasca Navion 24V
2010 Honda CRV toad
pixguy is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-01-2009, 12:57 PM   #2
Senior Member
 
Richard S.'s Avatar
 
National RV Owners Club
Ford Super Duty Owner
Join Date: May 2007
Location: El Cajon CA
Posts: 1,826
Could be your check / back flow valve is stuck or installed backwards.

You can save the drawing to your desk top, then you can enlarge it.
Attached Thumbnails
Click image for larger version

Name:	Dolphin04-5342-Flush-1.jpg
Views:	559
Size:	27.0 KB
ID:	545  
__________________

__________________
2007 Sea Breeze LX 8321 Ford Chassis
2004 Ford Ranger Edge
El Cajon CA.
Richard S. is offline   Reply With Quote
Old 06-01-2009, 04:47 PM   #3
Senior Member
 
WSRG's Avatar
 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Dec 2008
Posts: 292
Check valve

The black water tank check valve is most likely in the bathroom behind a panel located above the toilet. I've heard of these valves being installed backwards from other folks on this forum, so I would check this out first. If the valve is installed properly you will see a volume of water coming out of the tank during the flushing process. In regards to the grey tank draining slowly...most all of them are slow to drain. It's a two inch drain line instead of the four inch line on the black tank. Raising the front of the coach a little bit when you drain the tanks helps some, but it's still kind of slooooooooow.

Bill
__________________
BILL & CINDA SCHWARTZ
2005 SEABREEZE LX 8360
W-22 WORKHORSE 8.1 LTR.
BEAUTIFUL PHOENIX, AZ
WSRG is offline   Reply With Quote
Old 06-01-2009, 07:58 PM   #4
Member
 
Dave G's Avatar
 
Join Date: Nov 2000
Location: Goleta, CA., USA
Posts: 55
My Dolphin had the check valve installed backward. It was turned around and works fine. Simple plumbing task. Mine is located in the bathroom behind the toilet paper holder.
__________________
2001 Dolphin 5332
2002 Honda CR-V
Dave G is offline   Reply With Quote
Old 06-17-2009, 06:03 PM   #5
Member
 
pixguy's Avatar
 
National RV Owners Club
Join Date: Apr 2009
Posts: 87
Question Thanks but....

Thanks guys, I see the check valve, but how do I know if it is backwards? The arrow goes from the left side hose to the right, and the left hose is cut lower to accomodate the valve. Can I just switch them and try it next time I'm at a CG??

Thanks in advance! Bill
__________________
2016 Itasca Navion 24V
2010 Honda CRV toad
pixguy is offline   Reply With Quote
Old 06-17-2009, 07:03 PM   #6
Senior Member
 
Richard S.'s Avatar
 
National RV Owners Club
Ford Super Duty Owner
Join Date: May 2007
Location: El Cajon CA
Posts: 1,826
Incomming water should go in to the bottom of the valve. Have another look at the drawing posted earlyer.
__________________
2007 Sea Breeze LX 8321 Ford Chassis
2004 Ford Ranger Edge
El Cajon CA.
Richard S. is offline   Reply With Quote
Old 06-17-2009, 07:21 PM   #7
Senior Member
 
Workshop's Avatar
 
Join Date: Sep 2007
Posts: 1,334
This is what I have in my Excel, looks to be the same.

Watts Vacuum Breaker
__________________
2000 Alpenlite, 29 ft Valhalla - 2014 F350
Workshop is offline   Reply With Quote
Old 06-17-2009, 07:44 PM   #8
Senior Member
 
Richard S.'s Avatar
 
National RV Owners Club
Ford Super Duty Owner
Join Date: May 2007
Location: El Cajon CA
Posts: 1,826
Thats it except National used SAN-T-FLUSH by Swan IND. INC.
You may want to remove the valve take it appart and check for a blockage.


http://www.swanindustries.com/catalog/flushing.htm
__________________
2007 Sea Breeze LX 8321 Ford Chassis
2004 Ford Ranger Edge
El Cajon CA.
Richard S. is offline   Reply With Quote
Old 06-18-2009, 09:15 AM   #9
Senior Member
 
two2go's Avatar
 
Join Date: Dec 2007
Location: Parker, CO
Posts: 1,056
Once you get it flowing, make sure you monitor the activity with the drain valve open.
One of my friends went for a short walk while the drain was closed and returned to find a full toilet bowl and liquid (mostly water?) coming off the roof from the vent pipe. Another got distracted after closing the drain. Apparently his vent got plugged because the pressure split his holding tank. A $500 distraction.
__________________
2017 Coachmen Orion, Ford Transit 3.7L: previous
'09 Pleasure Way Lexor, '05 NRV Dolphin 5342
two2go is offline   Reply With Quote
Old 06-18-2009, 10:31 AM   #10
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
First, you use different hoses for different connections, I use a common GREEN hose for the tank flush duties. I do realize this is likely overkill as there is a vacuum breaker and, in my case, a check valve as well in the tank flush but when it comes to back-flow contamination.. Safe is how I like to play it.

Page 2: The tank rinser factory installed is basically junk, you can use it to partially fill the tank (Close the valve for a few mintues) and then open and dump again, This does seem to work.

I installed "The Tornado" (Brand name) and it is a little better, but frankly I don't think it was worth the extra price

That said, The one thing no tank rinser will do properly is clean the sensors off, I have found one, by Valterra (Actually I made mine long before I found theirs) that works I'd have to look it up but it's a wand that you stick down the toilet, feed water to the top and there is a single "Fire hose" type nozzle on the end, this blasts the wall rather well and if you move it around a bit does a 1st rate job.

Another method I once used was the "GEO" method desicribed elsewhere here in the forum. I will give you the SIMPLE verson

Drain and flush tank as you normally do now.

Add 1/2 cup DAWN regular dishwashing liquid (NOT anti-bacterial, the blue kind please)

Add 1/2 cup CALGON water softener, beads or liquid, don't matter

Add 5-6 gallons water

Drive 50-100 miles

Dump


Your sensors WILL read full, for FULL (of soap bubbles) the tank will be, but they will pop leaving you with clean tanks and sensors and a true reading.. For perhaps only the 2nd time since the rig was new
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 06-19-2009, 07:01 PM   #11
Member
 
pixguy's Avatar
 
National RV Owners Club
Join Date: Apr 2009
Posts: 87
Yikes

Yikes! Thanks for your input. I took the unit apart today and was able to run the garden hose through the inlet side and it run through correctly, I just have to determine what hose is the tank side and which is the fresh water. I guess I could hook up the hose to the outside connection and SLOWLY wait for it to run into a bucket.

Poor buggers who had to work on this stuff before the internet!

Thanks again for all your input!

Bill
__________________

__________________
2016 Itasca Navion 24V
2010 Honda CRV toad
pixguy is offline   Reply With Quote
Reply



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
The Geo Method / Black and Gray Water Holding Tank Maintenance Geometricenigma Technology: Internet, TV, Satellite, Cell Phones, etc. 33 10-29-2011 10:34 AM
Black Tank Flushing System Anne & Erik Winnebago Industries Owner's Forum 9 03-21-2008 04:25 PM
Black Tank Flushing Hose leak repaired. Ragman National RV Owner's Forum 2 01-29-2008 06:50 AM
Toilet connection to Black water tank leak Slapshottr Winnebago Industries Owner's Forum 7 09-28-2007 04:22 PM
After doing a search,, need advive on flushing black tank Houndog iRV2.com General Discussion 10 08-16-2005 11:27 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.