Reply
 
Thread Tools Display Modes
Old 08-30-2015, 06:46 PM   #11
Senior Member
 
nomad297's Avatar
 
Join Date: Jul 2015
Posts: 1,241
Quote:
Originally Posted by oldcat View Post
nomad297, Where does the black tank flush interconnect with the potable water system?
Wherever you have connected your garden hose.

Bruce
__________________

__________________
2016 Rockwood Windjammer 3029W Diamond
2015 Chevy 3500HD LTZ 6.0 Crew Cab 4x4 Long Bed 4.10:1 SRW
nomad297 is offline   Reply With Quote
Old 08-30-2015, 06:49 PM   #12
Senior Member
 
nomad297's Avatar
 
Join Date: Jul 2015
Posts: 1,241
Quote:
Originally Posted by oldcat View Post
nomad297, Where does the black tank flush interconnect with the potable water system?
You are not looking at the big picture. It is not the potable water system of your RV that could be contaminated. It is the water that everybody else is using.

Bruce
__________________

__________________
2016 Rockwood Windjammer 3029W Diamond
2015 Chevy 3500HD LTZ 6.0 Crew Cab 4x4 Long Bed 4.10:1 SRW
nomad297 is offline   Reply With Quote
Old 08-30-2015, 06:52 PM   #13
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,215
Quote:
Originally Posted by nomad297 View Post
You are not looking at the big picture. It is not the potable water system of your RV that could be contaminated. It is the water that everybody else is using.

Bruce
There should be a backflow preventer at the hose connection, at least there is on mine and if not, you should use one on your hose that actually works.
__________________
OldCoot is offline   Reply With Quote
Old 08-30-2015, 06:52 PM   #14
Senior Member
 
Join Date: Feb 2012
Location: Lynchburg, VA
Posts: 179
Quote:
Originally Posted by nomad297 View Post
You are not looking at the big picture. It is not the potable water system of your RV that could be contaminated. It is the water that everybody else is using.

Bruce
That's right, Bruce. The supply (garden) hose can become contaminated very easily, along with the entire external water hookup system. It's also of legal consideration.
__________________
2011 Sabre Silhouette 260BHS
2006 F-250 6.OL
tinkerreknit is offline   Reply With Quote
Old 08-30-2015, 07:09 PM   #15
Senior Member
 
nomad297's Avatar
 
Join Date: Jul 2015
Posts: 1,241
Quote:
Originally Posted by OldCoot View Post
There should be a backflow preventer at the hose connection, at least there is on mine and if not, you should use one on your hose that actually works.
This is the problem. Very few campgrounds have the correct type of backflow preventer on the water connection and most campers have no idea what a backflow preventer is, let alone actually use one , and even less likely, use the correct one. This is why there is one installed in the RV in a manner that makes it difficult to remove.

For over three decades, I have been a Master Plumber, Gasfitter and Certified Backflow Inspector. I will contribute my knowledge here whenever I can, however, I will not engage in arguments relative to these fields with Members here.

Bruce
__________________
2016 Rockwood Windjammer 3029W Diamond
2015 Chevy 3500HD LTZ 6.0 Crew Cab 4x4 Long Bed 4.10:1 SRW
nomad297 is offline   Reply With Quote
Old 08-30-2015, 07:10 PM   #16
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,215
nomad297, If they are plumbed correctly, it should have this at the external hose connection just inside the camper.
Attached Thumbnails
Click image for larger version

Name:	Black tank back flow valve 1.JPG
Views:	83
Size:	115.7 KB
ID:	87332   Click image for larger version

Name:	Black tank back flow valve close up.JPG
Views:	83
Size:	115.4 KB
ID:	87333  
__________________
OldCoot is offline   Reply With Quote
Old 08-30-2015, 07:55 PM   #17
Senior Member
 
nomad297's Avatar
 
Join Date: Jul 2015
Posts: 1,241
The key to good Backflow prevention is redundancy -- you always have a backup in case of failure. I don't know what standards the RV industry uses for Backflow prevention, but whatever it is, it isn't very strict. In real-world plumbing, we use standards set by ASSE. The two devices used on the black water flush in our RVs would never pass muster by ASSE, but at least they are there, and eliminating one of them is not a good idea.

Bruce
__________________
2016 Rockwood Windjammer 3029W Diamond
2015 Chevy 3500HD LTZ 6.0 Crew Cab 4x4 Long Bed 4.10:1 SRW
nomad297 is offline   Reply With Quote
Old 08-30-2015, 08:01 PM   #18
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,215
Quote:
Originally Posted by nomad297 View Post
The key to good Backflow prevention is redundancy -- you always have a backup in case of failure. I don't know what standards the RV industry uses for Backflow prevention, but whatever it is, it isn't very strict. In real-world plumbing, we use standards set by ASSE. The two devices used on the black water flush in our RVs would never pass muster by ASSE, but at least they are there, and eliminating one of them is not a good idea.

Bruce
All the campgrounds we've stayed at have one screwed and locked on the faucets, so we have redundancy.

Oh my, how did we ever make it all these years without "big brother" watching out for us?
__________________
OldCoot is offline   Reply With Quote
Old 08-30-2015, 08:28 PM   #19
Senior Member
 
Sagecoachdriver's Avatar
 
Join Date: Jun 2015
Location: Southern California
Posts: 1,466
I have always used these with my wand tank flusher when cleaning out my Winnebago. I also have one that I use with my sewer solutions. Both are attached to a special grey hose I use only for these two things. Are you telling me it's not enough?
Attached Images
 
__________________
2004 Winnebago Minnie 22e(went to a nice family Oct 3, 2015)
2016 Forester 2701DS (Aug 31, 2015)
2017 Camping 10 trips 32 nights
Sagecoachdriver is offline   Reply With Quote
Old 08-30-2015, 08:37 PM   #20
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,215
Quote:
Originally Posted by Sagecoachdriver View Post
I have always used these with my wand tank flusher when cleaning out my Winnebago. I also have one that I use with my sewer solutions. Both are attached to a special grey hose I use only for these two things. Are you telling me it's not enough?
Common sense would say "yes", but then common sense is not too common any more.
__________________

__________________
OldCoot is offline   Reply With Quote
Reply

Tags
black, black tank, black tank flush, tank

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




ForestRiverForums.com 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 11:03 PM.