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09-29-2011, 10:06 AM
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#1
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3 Rivet Member
1991 34' Excella
Boerne
, Texas
Join Date: May 2010
Posts: 119
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Sewer Flusher...How it works
How does the built in sewer flusher work. Is it a open tube, are there check valves, electronic valves or spraying devices inside the tank?
__________________
James B.
1991 34' excella 1000, bought 05/10, oak floors, granite countertops, Marble bathroom counter and floor, 2 A/C's, 2005 Hensley. 1600 Watts Solar/ 400Ah Lithium batteries
Tow With: 2006 Dodge 2500 Quad LB 2WD, 5.9 Cummins, Edge Insight CTS, Smarty Jr, Bilstein Shocks, Ingalls balljoints.
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09-29-2011, 10:28 AM
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#2
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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In general it works poorly.
There is a vacuum breaker, and a spraying device inside the tank. The vacuum breaker is plastic and is prone to damage from freezing since most people forget to "winterize" this component. The spraying device is prone to clogging.
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09-29-2011, 11:00 AM
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#3
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4 Rivet Member
2007 27' Safari FB SE
LONDON
, ON
Join Date: Dec 2006
Posts: 276
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Quote:
Originally Posted by Jammer
In general it works poorly.
There is a vacuum breaker, and a spraying device inside the tank. The vacuum breaker is plastic and is prone to damage from freezing since most people forget to "winterize" this component. The spraying device is prone to clogging.
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I've winterized for 4 years now but never thought of the black tank spray valve. How does one winterize it?
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09-29-2011, 11:03 AM
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#4
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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I use compressed air.
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09-29-2011, 11:06 AM
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#5
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Rivet Master
Port Orchard
, Washington
Join Date: May 2009
Posts: 4,463
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Quote:
Originally Posted by SilverCottage
I've winterized for 4 years now but never thought of the black tank spray valve. How does one winterize it?
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If you winterize using the factory suggested method of using air to blow the lines clear, you can just attach the air line to the tank sprayer and blow it clear. I guess you could also use a hose to pour some antifreeze through it into the tank.
Ken
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09-29-2011, 11:20 AM
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#6
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Rivet Master
2014 25' Flying Cloud
Cuddebackville
, New York
Join Date: May 2007
Posts: 4,333
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I've been using mine since 2007 without a hitch.
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09-29-2011, 11:24 AM
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#7
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Moderator
2015 25' FB Flying Cloud
2012 23' FB Flying Cloud
2005 25' Safari
Santa Rosa Beach
, Florida
Join Date: Jul 2006
Posts: 13,153
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My understanding of the built-in black tank sewer flusher in Lucy (our 2005 Safari) is that it consists of one or more pvc pipes (tubes) inside the black tank with numerous holes drilled in them. Fresh water is applied to these tubes from an external water inlet directly above the city water inlet on the left side of the trailer. The water from these holes rinses the black tank with clean water. It always gets out additional "crap" hiding in the black tank.
This system has worked well for us over the years. We use it every time that we dump Lucy's black tank. We also use this system after we close the black tank valve to put a couple of gallons of fresh water into the black tank to keep it wet.
Lucy has never been winterized, so I don't really know how to winterize the sewer flush. I would think that blowing compressed air through the tubes should do it.
Brian
__________________
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with ProPride
2020 Silverado 2500 (Vivian)
2023 Rivian R1T (Opal)
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09-29-2011, 11:27 AM
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#8
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Rivet Master
2012 25' Flying Cloud
Battle Lake
, Minnesota
Join Date: Jun 2009
Posts: 7,714
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Mine worked well on the Safari 20, easy way to flush the black tank. I would hook it up whenever disconnecting from the campsite (or a the dump) and give the black tank and sewer hose a good rinse, then disconnect the sewer hose.
doug k
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09-29-2011, 11:53 AM
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#9
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Rivet Master
Livingston
, Texas
Join Date: Sep 2010
Posts: 586
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Moosetags, Where did the labels come from? It looks nice, and certainly helpful.
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Sphere Guy
AIR 50601
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09-29-2011, 12:32 PM
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#10
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Contributing Member
2018 Interstate Grand Tour Ext
Austin (Hays County)
, Texas
Join Date: Jun 2002
Posts: 7,164
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I use mine every time I dump and it works quite well. When I am ready to hook up, I run a short hose from the outside faucet to the flush input and turn it on full blast. By the time the truck is all hooked up, there is nothing but clear water coming out of the hose.
Proof that it works is when I step on the toilet pedal and see the clean white plastic tank bottom.
I would not willingly be without the tank flush. I think the reason that some folks do not think it works well is that they simply do not give it time to work well.
__________________
John W. Irwin
2018 Interstate GT, "Sabre-Dog V"
WBCCI #9632
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09-29-2011, 01:21 PM
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#11
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Long Time Lurker
2010 31' Classic
Quincy
, Illinois
Join Date: Feb 2008
Posts: 22
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The "blow out plug" should make it easy to winterize the sewer flusher. I'm ordering one.
See:
Amazon.com: Camco 36143 RV Blow Out Plug with Brass Quick Connect: Automotive
PS: If you can get this URL to load go to Amazon and search for Camco RV Blow Out Plug
__________________
31D Classic 2010
F350 Ford Diesel DRW 2012
27FB Safari 2008 (traded)
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09-29-2011, 03:00 PM
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#12
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Rivet Master
Port Orchard
, Washington
Join Date: May 2009
Posts: 4,463
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Quote:
Originally Posted by boodalu
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It also make it easy to winterize the whole trailer.
I used that same one this year. I even bought it on Amazon. It worked great. It cost a lot less than the one I made two years ago by piecing together individual fittings and is easier to work with.
Ken
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09-29-2011, 03:22 PM
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#13
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3 Rivet Member
1991 34' Excella
Boerne
, Texas
Join Date: May 2010
Posts: 119
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I see. On my year AS the garden hose attaches to the outside connection and takes a turn upward into this valve. I can hear the water going through it, but is sounds restricted because there is a whine coming from it. Does anyone know what this valve's function is? IMO it is a pressure valve that lets water pass one way only, into the tank. From there the tubing goes down again and over above the water heater then down, I cannot see where it goes from there. I think I'll take this valve out and see if it can be cleaned or replaced. I was looking down the toilet when the sewer flush was in progress and there was no real water motion. There is a blockage somewhere.
__________________
James B.
1991 34' excella 1000, bought 05/10, oak floors, granite countertops, Marble bathroom counter and floor, 2 A/C's, 2005 Hensley. 1600 Watts Solar/ 400Ah Lithium batteries
Tow With: 2006 Dodge 2500 Quad LB 2WD, 5.9 Cummins, Edge Insight CTS, Smarty Jr, Bilstein Shocks, Ingalls balljoints.
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09-29-2011, 04:04 PM
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#14
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Contributing Member
2018 Interstate Grand Tour Ext
Austin (Hays County)
, Texas
Join Date: Jun 2002
Posts: 7,164
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The valve you show is a vacuum breaker that keeps water from running back into the source. The whistle (or whine) is natural. Both of mine have made that sound when the flush is running.
There should be no reason to winterize the flush. The water should run down hill from the vacuum breaker on both sides leaving the lines empty. I have never winterized either of mine and have had no problems.
__________________
John W. Irwin
2018 Interstate GT, "Sabre-Dog V"
WBCCI #9632
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09-29-2011, 04:46 PM
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#15
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4 Rivet Member
2007 27' Safari FB SE
LONDON
, ON
Join Date: Dec 2006
Posts: 276
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Quote:
Originally Posted by Jammer
I use compressed air.
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Thanks. I'll blow out the black flush line this year in addition to the city water inlet I've done every year.
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09-29-2011, 05:48 PM
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#16
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Rivet Master
1994 30' Excella
Mississauga
, Ontario
Join Date: Jun 2004
Posts: 1,234
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I live in Ontario Canada. We really get winter. I have never worried about winterizing the black tank flusher. It works really well and has never frozen. Obviously it drains every time you disconnect it.
Al
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Al and Jean
TAC ON-3
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11-14-2011, 08:55 PM
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#17
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Rivet Master
2006 23' Safari SE
Holly Lake Ranch
, Texas
Join Date: Sep 2010
Posts: 1,794
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Am I missing something?
I don't remember anything resembling the sewer flusher connector on the outside of my 2006 Safari?
is this only on some models?
Dana
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11-14-2011, 08:58 PM
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#18
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Contributing Member
2018 Interstate Grand Tour Ext
Austin (Hays County)
, Texas
Join Date: Jun 2002
Posts: 7,164
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Quote:
Originally Posted by Goal15
Am I missing something?
I don't remember anything resembling the sewer flusher connector on the outside of my 2006 Safari?
is this only on some models?
Dana
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Standard on Classics, at least recent years. Not on my 2003 Classic, but present on my 2005 Classic.
__________________
John W. Irwin
2018 Interstate GT, "Sabre-Dog V"
WBCCI #9632
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11-14-2011, 09:00 PM
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#19
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Rivet Master
2006 23' Safari SE
Holly Lake Ranch
, Texas
Join Date: Sep 2010
Posts: 1,794
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Thanks John
clears that up.
Dana
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11-14-2011, 10:01 PM
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#20
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Rivet Master
2008 27' Classic FB
Burkburnett
, Texas
Join Date: Jul 2010
Posts: 985
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Quote:
Originally Posted by Goal15
Am I missing something?
I don't remember anything resembling the sewer flusher connector on the outside of my 2006 Safari?
is this only on some models?
Dana
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On mine there are 2 seemingly identical city water inlets in the small streetside belly compartment. The 2nd is for the BW tank flush kit. On other models one or both may be mounted on the exterior. I don't know what years or models this was offered as either an option or standard. I believe it is standard on recent Classics, maybe others. In recent years the back flow preventer valve is plastic. It is mounted above the inlet and tank sprayer and is designed such that when the supply pressure is removed, the water will freely drain out of the inlet and the spray head presumably making it freeze proof.
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AIR 47751
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