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07-03-2020, 06:14 AM
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#1
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Member
Join Date: Sep 2019
Location: Erie
Posts: 31
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Grey water tank
Is is possible to upsize my grey water tank in my 2014 21RBS? 28 gallons for a long weekend just doesn’t cut it. My much smaller 19’ TT that I sold to get this one had 35 gallon so I’m disappointed it’s so so small.
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07-03-2020, 07:33 AM
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#2
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Senior Member
Join Date: Mar 2016
Location: Dexter Ga
Posts: 130
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I have the same size. I just use a blue tote tank. A little extra work but it works.
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07-03-2020, 07:52 AM
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#3
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Member
Join Date: Sep 2019
Location: Erie
Posts: 31
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Yeah, I know that’s an option but was hoping for a more permanent solution. I know anything’s possible but that may be my best option. I was just surprised to find my tank smaller than my previous unit. Thanks
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07-03-2020, 09:29 AM
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#4
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Senior Member
Join Date: Jun 2018
Location: Swanton
Posts: 188
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Where there's a will there's a way. Now that's an old saying, but it still holds true.
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07-03-2020, 10:30 AM
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#5
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,841
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OP,
Your 21RBS "should have" two gray tanks ???
If so, you can buy a "terminal valve" to fit on the trailer dump outlet, close that valve and open both gray tank valves. That will allow the contents of BOTH gray tanks to equalize between the tanks...
Many people who boondock regularly find that their bathroom gray tank fills much faster than the galley tank. That's because most of the cooking/dishwashing goes on outside and the galley tank is sometimes completely empty when the bathroom tank is full.
Equalizing the tanks (allowing the waste water to flow between the tanks until they have the same level) will often double the amount of available bathroom gray capacity...
DON'T TRY TO EQUALIZE THE BLACK TANK !!!!! Doing so will make a smelly mess if any of the sink traps, HEPVO valves or air admittance valves are defective. Plus, if something "gooey and larger than normal gets pushed into a gray tank, you only have a 1.5" rather than a 3" plumbing run to try to flush it back out....
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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07-03-2020, 12:25 PM
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#6
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Member
Join Date: Sep 2019
Location: Erie
Posts: 31
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I wish it was true bit I’m confident that my 2014 21RBS only has one grey water tank.
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07-03-2020, 12:30 PM
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#7
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Member
Join Date: Sep 2019
Location: Erie
Posts: 31
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I also have another problem. My tank flush doesn’t work. I’ve already replaced the vacuum breaker/check valve and it didn’t work. And don’t get me started on the piece of crap (literally) tank sensors that never seem to work. I know, I need a little cheese with the whines.
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07-03-2020, 12:46 PM
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#8
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Senior Member
Join Date: Dec 2018
Location: grand rapids
Posts: 596
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if you've owned another trailer you already know the sensors typically quit working on day one.
assuming your second question relates to your black water just keep filling and when it starts to 'burp' dump.
as for the gray water tank, drop the bottom and see it you can get another tank that will conform to the space....good luck on that though.
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07-04-2020, 05:15 AM
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#9
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Senior Member
Join Date: Feb 2013
Location: Lacey, WA
Posts: 499
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Quote:
Originally Posted by rcashdollar
I wish it was true bit I’m confident that my 2014 21RBS only has one grey water tank.
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Hum,.... my 2013 21RBSWE has 2 grey's.... each having it's own discharge valve.
Are you dry camping without hookups? If so,... and not parked right next to someone..... water the forest floor!!!!
__________________
Lee
1970 F250 Highboy 4x4
2013 Cougar 21RBSWE
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07-04-2020, 07:42 AM
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#10
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,600
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Here's a link to the specs on that trailer that would indicate one grey tank if correct;
https://www.rvusa.com/rv-guide/2014-...-21rbs-tr18656
I had a 2014 Cougar High Country 319rls which is not the same as the xlite, and was much larger, but it did have 2 grey tanks.
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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07-04-2020, 07:06 PM
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#11
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Senior Member
Join Date: Jul 2013
Location: Box Elder
Posts: 2,898
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Actually, a 2014 21RBS shows to have 76 gallons of gray capacity, according to the specs on the Keystone site. https://www.keystonerv.com/historica...262&label=2014
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Bob & Becky
2012 3402 Montana
2012 Chevy 2500HD D/A CC
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07-05-2020, 05:00 AM
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#12
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Senior Member
Join Date: Dec 2019
Location: Trinidad,TX
Posts: 968
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Conflicting specs. Imagine that.
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Woody
Cedar Creek Lake, Texas
2019 Laredo 290 SRL
2019 Ram 2500, 4x4, Cummins diesel
Andersen hitch
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07-13-2020, 09:05 PM
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#13
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Senior Member
Join Date: Dec 2017
Location: Wandering the Country
Posts: 588
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Sounds like it might be the difference between the the western edition and non-WE.
That is 21RBS, the OP's, and the specs of a 21RBSWE?
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07-14-2020, 04:05 AM
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#14
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Senior Member
Join Date: Dec 2018
Location: grand rapids
Posts: 596
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get a tote.
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07-19-2020, 09:29 AM
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#15
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Senior Member
Join Date: Apr 2016
Location: Fort Thomas, AZ
Posts: 144
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Gray water? There is an adapter for a garden hose that I use when boondocking out in the middle of nowhere. Move it around the trees and bushes and try not to create a mudhole.
__________________
Bob n Judy n Nanook n Biscuit n Elsa
2016 Ram 1500 - 2016 Laredo 265SRK
Running on the ragged edge of respectability
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07-20-2020, 05:30 AM
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#16
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Senior Member
Join Date: May 2019
Location: Cotulla, TX
Posts: 459
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Flush circuit
You said you replaced the vacuum breaker to the black tank as a possible cure, but did you check if the original was installed backwards? If all you did was was remove the original and insert the new one, you should start over.
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07-20-2020, 12:32 PM
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#17
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Senior Member
Join Date: Oct 2018
Location: Fort Collins
Posts: 125
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We own a 2012 21RBSWE. It definitely has two grey water tanks each at 38 gal. It is probable the western version is set up different than the eastern version. But I bet the underbelly layout is the same and has space for a second 38 gal tank. I like the idea of tying them together but have not decided to tackle that project yet.
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2012 Cougar 21RBSWE
2018 GMC 1500 5.3L, 4x4, crew cab, max tow pkg
Andersen Hitch
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07-21-2020, 05:42 PM
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#18
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Member
Join Date: Jun 2018
Location: Deux Montagnes,Quebec
Posts: 66
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If so, you can buy a "terminal valve" to fit on the trailer dump outlet, close that valve and open both gray tank valves. That will allow the contents of BOTH gray tanks to equalize between the tanks...
.[/QUOTE]
Would you have a link to one of these valves. Not sure what you mean . My keystone 293 UBH has two grey tanks but has two separate valves. The kitchen one is under the slide out and to make things more difficult the pull is so far in I almost have to get on my back to pull it, (good thing kids were invented) ideally i want to connect both greys together and use only the valve at the rear of the camper. Hope to get around to that soon
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07-21-2020, 05:48 PM
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#19
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,714
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Quote:
Originally Posted by Nitehawk
If so, you can buy a "terminal valve" to fit on the trailer dump outlet, close that valve and open both gray tank valves. That will allow the contents of BOTH gray tanks to equalize between the tanks...
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Would you have a link to one of these valves. Not sure what you mean . My keystone 293 UBH has two grey tanks but has two separate valves. The kitchen one is under the slide out and to make things more difficult the pull is so far in I almost have to get on my back to pull it, (good thing kids were invented) ideally i want to connect both greys together and use only the valve at the rear of the camper. Hope to get around to that soon[/QUOTE]
Here you go ... https://www.walmart.com/ip/Camco-390...pter/326657650
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Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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07-25-2020, 08:05 PM
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#20
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Senior Member
Join Date: May 2017
Location: Grenfell
Posts: 187
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We had a 2017 Cougar 21RBS. It had one grey, one black tank. So does our 2019 22RBS. Ours has the front window, so I'm supposing it is an "Eastern Edition".
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2020 F150 ECO SC & 2019 Cougar 22RBS HT
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