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07-31-2021, 07:18 AM
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#1
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Weekend Camper
Join Date: Jul 2020
Location: NY
Posts: 23
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2020 242bh black tank flush
Hi all
My camper came equipped with the black tank flush. When I hook up a hose, turn water on, and open black tank valve I don't see any water coming out.
Is there any other valves that need to be opened for this to work?? I can't find anything in the manual .
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2020 Sunset Trail SS242BH
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07-31-2021, 10:31 AM
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#2
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Site Team
Join Date: Jan 2014
Location: VA
Posts: 1,714
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How full is the tank? When it less than full, you should be able to hear the water spraying around inside the tank, kind of a muffled swishing noise. There is a check valve just inside the connection that may be defective and not letting water pass. When you turn the water off and disconnect the hose, there should not be much water pressure in the hose. If there is, the check valve is probably defective. Also, check inside the trailer to make sure it is not leaking inside there instead of going in the black tank.
__________________
2013 Silverado 2500HD LTZ CC 6.6L Duramax Diesel
2023 Rockwood 2445WS
Buster, miniature Dachshund
2023: 9 trips, 48 nights in 12 states, 2 provinces, 8120 miles
2022: 3 trips, 18 nights in 4 states, 2352 miles
2019: 7 trips, 43 nights in 6 states, 5336 miles
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07-31-2021, 12:27 PM
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#3
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Weekend Camper
Join Date: Jul 2020
Location: NY
Posts: 23
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Tank was empty. I did listen and didn't hear anything.
When I disconnected there was a lot of pressure built up.
I guess check valve is bad.
Quote:
Originally Posted by DavisK
How full is the tank? When it less than full, you should be able to hear the water spraying around inside the tank, kind of a muffled swishing noise. There is a check valve just inside the connection that may be defective and not letting water pass. When you turn the water off and disconnect the hose, there should not be much water pressure in the hose. If there is, the check valve is probably defective. Also, check inside the trailer to make sure it is not leaking inside there instead of going in the black tank.
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2020 Sunset Trail SS242BH
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08-02-2021, 01:31 PM
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#4
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New Camper
Join Date: Aug 2021
Location: Tennessee
Posts: 9
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Quote:
Originally Posted by stripedass
Hi all
My camper came equipped with the black tank flush. When I hook up a hose, turn water on, and open black tank valve I don't see any water coming out.
Is there any other valves that need to be opened for this to work?? I can't find anything in the manual .
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I am having the same issue with our 2021 Volante 3851FL. With the water connected to the flush valve and turned on there is no water going into the black tanks. No spraying sound, not anything. Yesterday I removed the flush valve from the panel and the backflow preventer is working correctly. There was pressure built up in the line between the back flow preventer and where ever the line connects after it disappears under the storage bay. This leads me to believe there is another valve somewhere in the line that is closed or another backflow preventer in the system that is installed incorrectly.
Without removing the underbelly covering I'm not sure how to trace it down.
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08-02-2021, 04:40 PM
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#5
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Full Time Camper
Join Date: Oct 2009
Location: Texas
Posts: 745
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There is a screen in the fitting that connects to the tank that tends to plug up. I finally removed the screen after it plugged a couple of times, solved the problem.
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Russ
Forney,TX
2010 Cruiser CTX CT29RLX
2009 F-150XLT
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08-03-2021, 12:52 PM
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#6
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New Camper
Join Date: Aug 2021
Location: Tennessee
Posts: 9
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Are you talking about the screen where the water hose connects to the flush port? If so the screen is not the issue with mine.
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2021 Volante 3851FL
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08-03-2021, 01:20 PM
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#7
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Full Time Camper
Join Date: Oct 2009
Location: Texas
Posts: 745
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The screen is in the fitting that is inside the black tank at the hose connection. Remove the fitting and pop out the screen. Mine is similar to this. https://www.etrailer.com/RV-Waste-Va...RoCJy0QAvD_BwE
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Russ
Forney,TX
2010 Cruiser CTX CT29RLX
2009 F-150XLT
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08-03-2021, 01:57 PM
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#8
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New Camper
Join Date: Aug 2021
Location: Tennessee
Posts: 9
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I see what you are saying but how do you get to that? By removing the underbelly covering?
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2021 Volante 3851FL
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08-03-2021, 02:05 PM
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#9
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Full Time Camper
Join Date: Oct 2009
Location: Texas
Posts: 745
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You will have to get access to the tank by cutting a hole in the fabric or dropping it. Loosen the fabric along an edge to see where the connection to the tank is. It will be along the side. Cut a hole in the fabric to access it. It is held in place with three screws, remove the screws and the fitting will come out. Be sure the black tank is empty before removing it.
This link may be helpful. https://www.rv.net/forum/index.cfm/f...print/true.cfm
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Russ
Forney,TX
2010 Cruiser CTX CT29RLX
2009 F-150XLT
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08-03-2021, 07:22 PM
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#10
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Site Team
Join Date: Sep 2012
Location: PA
Posts: 5,713
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It often is a pinched or twisted hose that leads to the black tank. Check for that also.
__________________
Mark & Susan
Lehighton, Pennsylvania
EAGLE HT FIFTH WHEEL | 30.5CKTS - '13 Ford F150 SCREW - PullRite Superslide - Roadmaster Active Suspension
Member - "Northeast Adventures RV Rally Group" & "Mason-Dixon Bunch"
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08-05-2021, 09:06 AM
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#11
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New Camper
Join Date: Aug 2021
Location: Tennessee
Posts: 9
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Thanks everyone. I will check it out this weekend.
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2021 Volante 3851FL
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08-05-2021, 02:16 PM
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#12
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Family Vacation Member
Join Date: Aug 2018
Location: TN
Posts: 136
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(YouTube) LOVE YOUR RV found same problem (think was 3yo?), replaced, found jet holes CLOGGED after removal. Maybe remove/ clean (drill bit?)/ replace?
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08-05-2021, 02:33 PM
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#13
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Weekend Camper
Join Date: Jul 2009
Location: Okotoks, AB
Posts: 44
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Quote:
Originally Posted by Russb
There is a screen in the fitting that connects to the tank that tends to plug up. I finally removed the screen after it plugged a couple of times, solved the problem.
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Same here.
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2010 Cruiser CF30QB
2003 GM 2500HD 8.1/A
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08-05-2021, 03:46 PM
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#14
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Family Vacation Member
Join Date: Aug 2016
Location: TX
Posts: 139
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2020 is fairly new, is it still under warranty?
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TexSon
2010 Zinger ZT29DS - SOLD
2021 Grand Design Reflection 315RLTS
2020 Silverado HD3500 Duramax
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10-12-2023, 08:27 PM
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#15
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New Camper
Join Date: Aug 2023
Location: Wisconsin
Posts: 6
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Black tank flush lines
I understand and have done a few black tank flushes. Now, I’m wondering how to handle winterizing that line. I have a Crossroads Cruiser.
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10-12-2023, 09:05 PM
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#16
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Site Team
Join Date: Sep 2012
Location: PA
Posts: 5,713
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I blow it out with air.
__________________
Mark & Susan
Lehighton, Pennsylvania
EAGLE HT FIFTH WHEEL | 30.5CKTS - '13 Ford F150 SCREW - PullRite Superslide - Roadmaster Active Suspension
Member - "Northeast Adventures RV Rally Group" & "Mason-Dixon Bunch"
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10-12-2023, 10:35 PM
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#17
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New Camper
Join Date: Aug 2023
Location: Wisconsin
Posts: 6
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Thanks so much!
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