RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
 

Go Back   Keystone RV Forums > Keystone Fleet | Keystone RV Models > Travel Trailers
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 10-28-2018, 05:58 AM   #1
Eric27
Junior Member
 
Join Date: Oct 2018
Location: Canada
Posts: 20
Draining waist tanks

I have just bought a Cougar 24SAB With front kitchen and thus 2 grey tanks. Is there a way to hook the two up so you can get a good flush on the black tank.
__________________

Eric27 is offline   Reply With Quote
Old 10-28-2018, 06:10 AM   #2
Canonman
Senior Member
 
Canonman's Avatar
 
Join Date: May 2016
Location: South Jordan, Utah
Posts: 1,438
On our Cougar the two tanks are connected at the final 3" pipe just before the dump connection . Is your rig set up with two dump connections? Or, is the question more about getting maximum flow through the grey lines? I dump the black tank first, then the galley and finally the bathroom grey.
__________________

__________________
2017 Cougar 279RKSWE
2007.5 Dodge Ram 2500 6.7 Cummins
Retirement Training Completed
Mr. Rodgers did not adequately prepare me
for the people in my neighborhood
Canonman is offline   Reply With Quote
Old 10-28-2018, 06:12 AM   #3
chuckster57
Site Team
 
chuckster57's Avatar
 
Join Date: Jul 2014
Location: Modesto
Posts: 12,451
Welcome to the forum

First off congrats on your new purchase. The only way to ďflushĒ the black tank is to use the rinser, or use a wand that attaches to a hose and go through the toilet. You may have misread or been told wrong, the gray tanks donít have anything to do with the black tank flushing except to clean the sewer hose. Itís common practice to dump the black tank first and then dump a gray tank to clean out the hose.
__________________

2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
chuckster57 is offline   Reply With Quote
Old 10-28-2018, 06:36 AM   #4
Eric27
Junior Member
 
Join Date: Oct 2018
Location: Canada
Posts: 20
Mine has 2 grey drains not connected. It’s all about getting a good flush on the hose. Maybe Y would work?
Thanks
Eric27 is offline   Reply With Quote
Old 10-28-2018, 06:38 AM   #5
Eric27
Junior Member
 
Join Date: Oct 2018
Location: Canada
Posts: 20
It’s all about getting a good flush on the hose.
Cheers
Eric27 is offline   Reply With Quote
Old 10-28-2018, 07:10 AM   #6
chuckster57
Site Team
 
chuckster57's Avatar
 
Join Date: Jul 2014
Location: Modesto
Posts: 12,451
Quote:
Originally Posted by Eric27 View Post
Mine has 2 grey drains not connected. Itís all about getting a good flush on the hose. Maybe Y would work?
Thanks
A Y connector would work real good.
__________________

2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
chuckster57 is offline   Reply With Quote
Old 10-28-2018, 03:09 PM   #7
bomburbear
Junior Member
 
Join Date: Apr 2018
Location: Cochran
Posts: 4
Valterra F02-4350 Flush King Reverse RV Flush Valve,
bomburbear is offline   Reply With Quote
Old 10-28-2018, 05:22 PM   #8
TLB
Senior Member
 
TLB's Avatar
 
Join Date: Sep 2013
Location: Essexville, MI
Posts: 263
Quote:
Originally Posted by Eric27 View Post
Itís all about getting a good flush on the hose.
Cheers
__________________

2014 Passport Elite 31RE

2017 2500HD Crew Cab
TLB is offline   Reply With Quote
Old 10-29-2018, 01:33 PM   #9
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 19,623
Well, "way back when we towed with Travelalls" (if you don't remember them, you're probably not going to ever collect on Social Security), we didn't have "black tank flush systems".... So, the usual way to flush the black tank was to go inside, run a hose down the toilet and fill the black tank over and over until it was cleaner (not as dark brown as the first dump)....

If you were without a hose or at a location that didn't have a water faucet, you couldn't "refill the black tank through the toilet"....

We had a way "way back then" to flush the black tank using the gray tank (remember, most trailers didn't have gray tanks, as we ran that water onto the ground). On those that did have a gray tank, we would close the terminal valve slide (the one that twists on that's sold by Valterra) and then open the black tank and gray tank valves. That would "equalize" the two tanks by flowing gray water into the black tank. After the tanks were equalized and before the black contents started migrating to the gray tank, close both valves, then open the terminal valve and dump the black tank again. There will be "about half a gray tank of gray water" left to flush the sewer hose after the black tank is empty. Just close the black valve, open the gray valve and flush the sewer hose as usual.

Yes, fortunately we're pretty much "beyond using gray tank contents to flush the black tank" so most people either have never heard of what we used to do or have forgotten that procedure.... Either way, yes you can use the gray tank to flush the black tank, but there are many, many ways that are more effective than equalizing the gray and black tanks with a terminal slide valve to keep the contents in the tank lines......
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 11-09-2018, 05:55 AM   #10
jdl636
Junior Member
 
Join Date: Nov 2015
Location: Marysville, Ohio
Posts: 6
I put instrument panels in the IH Travelall's in early 70's Great trucks for their time. The one many people have never seen or heard of is the Travllete! Essentially the precursor of the Chevy Avalanche, which was IMHO as useful. LOL
jdl636 is offline   Reply With Quote
Old 11-09-2018, 06:42 AM   #11
Eric27
Junior Member
 
Join Date: Oct 2018
Location: Canada
Posts: 20
Im trying to get the maximum flow to flush the hose after dumping the black.
FYI I love your red white and blue quote����
Eric27 is offline   Reply With Quote
Old 11-09-2018, 07:26 AM   #12
n1282x
Junior Member
 
Join Date: Oct 2014
Location: Sun City
Posts: 19
I took drivers ed in a 1968 bright yellow travelall 1100. The instrument panel was full of round gauges just like a B-29
__________________

n1282x is offline   Reply With Quote
Reply

Tags
drain, 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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RVģ is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 03:43 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×