Reply
 
Thread Tools Display Modes
Old 09-30-2015, 12:50 PM   #11
Member
 
Join Date: Mar 2014
Posts: 65
Quote:
Originally Posted by ependydad View Post
A buddy of mine just texted me last week. Said he spaced out and "turned off the black tank flush .... twice." Meaning, when he walked away, it was on.

He said the tank ended up rupturing from it. I'm curious about that since I would have actually expected water to fill up and come out the vent pipe for a horrible crap-fountain/shower.
I was camping next to a family over July 4th weekend that did just what you described. They had a rental MH and their young son hooked up the water. I was sitting outside under my awning when all of a sudden water started shooting from the vent on top of their coach. I shut their water off at the spigot. When we looked, city water had been hooked up to the black flush. Luckily they had not used the coach yet so for the most part, it was clear water. The downside was that in addition to the fountain on the roof, the toilet overflowed inside as well!
__________________

__________________
Matt
2013 F150
2014 Salem Hemisphere 282RK
Lowes48fan1 is offline   Reply With Quote
Old 09-30-2015, 01:54 PM   #12
Member
 
milvet33's Avatar
 
Join Date: Jan 2013
Location: Texas
Posts: 54
Black tank flush

Never had an RV with a built in black tank flush. I've always used an add on that attaches to the tank drain outlet. The unit is nothing more than an additional gate valve and a hose connection that shoots water into the drain. I pull the black tank drain and empty the tank then close the added gate valve and let the tank refill with the fresh water. Open the added valve and drain the tank. The clear pipe lets you see what's coming out (lots more additional nasty stuff). The point is this--water spraying into the tank doesn't seem like an effective way to clean it out. The main cleaning action is the sudden force of liquid moving toward the drain. The second fill and dump uses the same driving force to remove any remaining liquid and stuff. A previous post above duplicated the same action by closing the drain gate valve and letting the sprayer fill the tank with fresh water.
__________________

__________________
milvet33 is offline   Reply With Quote
Old 09-30-2015, 02:50 PM   #13
Senior Member
 
Tom48's Avatar
 
Join Date: Apr 2015
Location: Ontario, California
Posts: 1,005
Quote:
Originally Posted by strat56 View Post
I have a Windjammer, if it's like the one on mine, I use it like this.

I dump the black tank, then I hook up a water hose to the black tank flush on the camper. Here;s what I do that the directions say not to do, I then close the black tank drain valve.

The directions say to leave the valve open when running water thru the black tank flush but I think it does a better job if you let the water build up some in the tank before you drain it again.
Pretty sure they say NOT TO DO THAT, for CYA liability reasons. Because at a potential hose flow rate that can be 10 gals per minute it will only take four minutes and a brief distraction and your Black tank will be overflowing. That means backing up in to the toilet and on to the floor or leaking at the seal between tank and toilet or GOD forbid black tank gooo flowing out your roof vent SO TO COVER THEIR A** they say do not do it.

Of Course it is possibly the BEST way to do it so there is the dilemma. DO it well and Take the Risk or if you are prone to be easily distracted, do it the safe way. I cannot easily get to my black tank to install a flush so I stand at the dump station after dumping the black and I hold the sewer hose above tank level and stick the water hose in to my sewer hose and back fill the tank that way. I assume a 10 gal rate and my tank is only 30 gal so I time it to a bit less than three minutes and then pull the hose and lower the dump hose in to the drain. Not surprising to those who follow the poop threads on here, it usually takes two or three back fills with fresh water before the tank is running out clear. Sometimes the tank sensors even say it is empty if I flush it really well.

Be careful if you use the black tank flush with the gate valve closed. Know that in a simple 5 minute distraction, oh say talking to a by stander; you MAY FLOOD YOUR FLOOR OR YOUR ROOF (not sure which is worse) with POOO water.
__________________
Tom48 is offline   Reply With Quote
Old 09-30-2015, 03:01 PM   #14
Senior Member
 
Witch Doctor's Avatar
 
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 7,606
Quote:
Originally Posted by Tom48 View Post
Pretty sure they say NOT TO DO THAT, for CYA liability reasons. Because at a potential hose flow rate that can be 10 gals per minute it will only take four minutes and a brief distraction and your Black tank will be overflowing. That means backing up in to the toilet and on to the floor or leaking at the seal between tank and toilet or GOD forbid black tank gooo flowing out your roof vent SO TO COVER THEIR A** they say do not do it.

Of Course it is possibly the BEST way to do it so there is the dilemma. DO it well and Take the Risk or if you are prone to be easily distracted, do it the safe way. I cannot easily get to my black tank to install a flush so I stand at the dump station after dumping the black and I hold the sewer hose above tank level and stick the water hose in to my sewer hose and back fill the tank that way. I assume a 10 gal rate and my tank is only 30 gal so I time it to a bit less than three minutes and then pull the hose and lower the dump hose in to the drain. Not surprising to those who follow the poop threads on here, it usually takes two or three back fills with fresh water before the tank is running out clear. Sometimes the tank sensors even say it is empty if I flush it really well.

Be careful if you use the black tank flush with the gate valve closed. Know that in a simple 5 minute distraction, oh say talking to a by stander; you MAY FLOOD YOUR FLOOR OR YOUR ROOF (not sure which is worse) with POOO water.
GEEZ, I will close and fill a minute or two then pull the valve if I'm not at a dump station and at a connection. I mostly just hook up and leave the valve open and come back in 15 or 20 mins and the water is clear as a bell. But on the other hand I have been accused of not being green. I don't live in a drought area, or I'm sure I would change my procedure. I wouldn't dare do that in the current California conditions, but where I live, I will be lucky if we don't get flooded out....
__________________
Rockwood #8289 WS 2012
F250 6.0 / Husky 16k
With 4 point leveling system
Witch Doctor is online now   Reply With Quote
Old 09-30-2015, 03:04 PM   #15
Member
 
Join Date: Aug 2015
Location: Corbin, Kentucky and Tampa, Florida
Posts: 49
My black tank drains like gangbusters for about 30 seconds. I have to leave the black valve open for about an hour before the tank is drained. The clear extender is a good idea and also the fabric softener. Getting distracted is easy. Our neighbor siphoned a full tank of gas from his car once trying to get a gallon for his mower.
__________________
James Briar is offline   Reply With Quote
Old 09-30-2015, 03:21 PM   #16
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,211
Quote:
Originally Posted by gljurczyk View Post
GEEZ, I will close and fill a minute or two then pull the valve if I'm not at a dump station and at a connection. I mostly just hook up and leave the valve open and come back in 15 or 20 mins and the water is clear as a bell. But on the other hand I have been accused of not being green. I don't live in a drought area, or I'm sure I would change my procedure. I wouldn't dare do that in the current California conditions, but where I live, I will be lucky if we don't get flooded out....
Agree, and I bet 90% of the folks in the drought areas haven't changed their SOP unless mandated by law or regulation.
__________________
OldCoot is offline   Reply With Quote
Old 09-30-2015, 03:34 PM   #17
Senior Member
 
leefl's Avatar
 
Join Date: Jul 2015
Location: Central Florida
Posts: 454
I also do what others have suggested: -
Flush black tank
Flush gray tank (on same connector)
Hook up (separate, dedicated for the purpose) hose to sprayer/flush inlet
Let it run for a minute until mostly clear
Close black tank valve (for 1-2 mins, never longer) with the sprayer still running
Open black tank valve, and let it flush until clear
Close black tank valve
Go turn off water straight away (in this order so that I get 1-2 gallons of water left in tank).

Unfortunately my 2nd black tank (for the bunk-room half-bath) doesn't have a sprayer so I've just been cleaning by dumping, running faucet for a while, and then dumping again.
I'm not really familiar with the toilet wands that I've seen mentioned.

I did think about either trying to retro-fit a sprayer to the 2nd tank (tho' I'm not keen on the idea of messing about with the black tank), or buying one of the extra valves that milvet33 mentioned (but they don't seem to do any more than just closing the valve and flushing the toilet a few times).

I thought this video comparison of tank cleaning methods was pretty interesting: -
__________________
2015 Rockwood Signature UltraLite 8281WS
2016 Ford F-250 Lariat CrewCab, 4x4, 6.2L V8
leefl is offline   Reply With Quote
Old 09-30-2015, 03:43 PM   #18
Toy-aholic
 
Join Date: Mar 2010
Location: Chalfont, PA
Posts: 708
I have an outside shower hose in the same bay as the flush...simply installed quick connects to both & use the outside shower hose to flush.
__________________
2005 GMC Sierra 3500 SLT DRW 6.6 D/A
2013 Crusader 335BHS TE
EXGMTech is offline   Reply With Quote
Old 09-30-2015, 08:07 PM   #19
Cyber Phrenologist
 
Radio's Avatar
 
Join Date: Jun 2007
Location: Fayetteville, GA
Posts: 1,699
If I were building a campground... The dump station parking pad would have about a 6 degree tilt toward the street side of the RVs so that the tanks would drain a little faster and better.

Just sayin'

Maybe some CG owners will see this...
__________________
KU4OJ
Admin at www.openroadsradio.net, part of the Social Knowledge network.
"RVing and Amateur Radio served up on the same plate"
2008 (or is it 2009?) Rockwood 8280SS - 2007 F-150
Lot's of mostly Kenwood radios

Radio is offline   Reply With Quote
Old 09-30-2015, 08:12 PM   #20
Member
 
camping baba's Avatar
 
Join Date: Jun 2015
Location: Mass
Posts: 215
STRAT 56. Is right on .we do ours the same way with no problems
__________________

__________________
2013 Silverado extended cab 4x4 1500 Series
camping baba 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 06:52 AM.