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08-27-2018, 09:41 PM
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#1
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Member
Join Date: Aug 2018
Posts: 83
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My grey water to 3in sewer mod
Ok it’s not really a “mod” as much as it’s my solution to a problem that never should have been a problem. We full hookup camp about 90% of the time. Family with young kids it’s just the only way to go. So why would forestriver not connect the grey water tank to the black 3in dump like EVERY trailer on earth?!?!? I know people have replumbed the grey to the black. Maybe I will too until then here is my solution. I used a sewer clean out adapter (had to remove the one way rubber flap with pliers). I still have a ball valve to keep black water from going in to the grey water tank. Then I simply attached a short hose and done! I can take a shower and use the sink as much as I want. I only drain the black when it’s full. Cheap and easy solution.
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08-27-2018, 09:54 PM
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#2
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Senior Member
Join Date: Jul 2017
Location: Suffolk, Va.
Posts: 1,413
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Is that a standard sewer connection on the gray tank dump?
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Michael & Fran Dilday (Baxter & Honey 2 Labs)
'18 Cedar Creek Champagne 38EL - '17 Ford F350 Lariat DRW w/Reese hitch - TST 507 Color TPMS - Garmin RV 770 LMT GPS
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08-27-2018, 10:27 PM
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#3
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Member
Join Date: Aug 2018
Posts: 83
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No. It’s a 1.5in grey water valve.
I suppose it’s a standard 1.5. But not a 3in.
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08-28-2018, 08:06 AM
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#4
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Recently new!
Join Date: Dec 2014
Location: Arizona, in The Land of Scorch!
Posts: 1,206
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Nice way to git’er done!
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1987 Starcraft Nova tent trailer, purch. '87, sold 8.14
2013 Crusader 290RLT bought new, 8.14 lotsa mods!
2001 Ford F-250 7.3
Loving wife, R.I.P., 6/6/19
and Mason the always dirty dog! R.I.P, 2/19
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08-28-2018, 08:19 AM
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#5
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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so, you have to have a 2nd 1.5" hose to deal with?
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08-28-2018, 09:35 AM
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#6
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Member
Join Date: Aug 2018
Posts: 83
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Quote:
Originally Posted by cavie
so, you have to have a 2nd 1.5" hose to deal with?
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Yeah. And they done make a 1.5 in hose that I’ve ever seen. They only make a screw on adapter to hook up a garden hose. It’s so dumb.
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08-28-2018, 01:34 PM
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#7
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Senior Member
Join Date: Aug 2015
Location: Media, PA
Posts: 2,932
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Quote:
Originally Posted by Itwrx
No. It’s a 1.5in grey water valve.
I suppose it’s a standard 1.5. But not a 3in.
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But I can see what looks like a standard sewer hose connection in your photo of the grey dump valve. Is that the original valve gate?
Other than that I think you are right to be irritated.
__________________
2017 Dynamax REV 24RB
2018 Ford F-150
Formerly a 2013 Sunseeker 2250 SLEC.
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08-28-2018, 02:53 PM
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#8
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Senior Member
Join Date: Mar 2016
Posts: 133
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Genius!
I re plumbed mine with tees, black pipe and a 1 1/2 valve.
Your arrangement in the way to go.
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08-28-2018, 05:19 PM
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#9
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Member
Join Date: Aug 2018
Posts: 83
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Quote:
Originally Posted by Delco Bobby
But I can see what looks like a standard sewer hose connection in your photo of the grey dump valve. Is that the original valve gate?
Other than that I think you are right to be irritated.
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It’s a threaded inch and a half valve. I screw on a hose adapter like this.
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08-28-2018, 09:26 PM
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#10
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Senior Member
Join Date: Aug 2015
Location: Media, PA
Posts: 2,932
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Quote:
Originally Posted by Itwrx
It’s a threaded inch and a half valve. I screw on a hose adapter like this.
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Interesting, never saw that before.
__________________
2017 Dynamax REV 24RB
2018 Ford F-150
Formerly a 2013 Sunseeker 2250 SLEC.
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08-28-2018, 11:06 PM
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#11
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Member
Join Date: Aug 2018
Posts: 83
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Quote:
Originally Posted by Delco Bobby
Interesting, never saw that before.
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Me either. However I was looking at my parents toy hauler and the grey tank valve is a 1.5in to 3in. Apparently most grey water dumps are 1.5. But since it connects to a 3in common drain it’s no big deal.
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08-29-2018, 11:44 PM
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#12
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Senior Member
Join Date: Aug 2018
Location: Northwest Indiana
Posts: 572
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Quote:
Originally Posted by Itwrx
Ok it’s not really a “mod” as much as it’s my solution to a problem that never should have been a problem. We full hookup camp about 90% of the time. Family with young kids it’s just the only way to go. So why would forestriver not connect the grey water tank to the black 3in dump like EVERY trailer on earth?!?!? I know people have replumbed the grey to the black. Maybe I will too until then here is my solution. I used a sewer clean out adapter (had to remove the one way rubber flap with pliers). I still have a ball valve to keep black water from going in to the grey water tank. Then I simply attached a short hoes and done! I can take a shower and use the sink as much as I want. I only drain the black when it’s full. Cheap and easy solution.
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Nice job! You obviously had vents for your shower and your sink. Otherwise you would get an air lock, not allowing you drain through your hoses.
On my previous 2007 Starcraft, I had a vent on the shower but didn't have a vent on my sink. So I had to make my own vent so that the water would flow through the hose to my blue tote.
The new 2019 2318G I'm looking at doesn't have a vent on either the shower drain or the sink drain. So I may make it easier on myself and put my blue tote directly under the shower drain and drop hose directly into blue tote, leaving blue tote vented. And for the sink drain, dropping a hose right to a bucket. I can either pour bucket into a toilet or into the blue tote. That way there less hose length and vent fittings to have to mess with.
__________________
2019 Ford F150 Race Red XLT Sport, CC, 4WD, 145" WB, 3.5L Ecoboost, 10 speed, 3.55 Locking Axle, 1830# Payload, 12,700# Tow Rating, pulling a 2020 Rockwood Premier 2716G Pop Up, with a 14' box. Go through Indiana Dunes NP 5X/week! Previously had 2012 Jayco Jay Flight 26BH and 2008 Jayco Jay Flight 19BH Travel Trailers. Also previously had 2007 Starcraft 2406 Pop Up with 12' box and bathroom, Previously had 2005 Rockwood 2290 Pop Up with 12' box and porta potty cabinet.
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08-30-2018, 09:55 AM
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#13
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Member
Join Date: Aug 2018
Posts: 83
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Quote:
Originally Posted by Mike91
Nice job! You obviously had vents for your shower and your sink. Otherwise you would get an air lock, not allowing you drain through your hoses.
On my previous 2007 Starcraft, I had a vent on the shower but didn't have a vent on my sink. So I had to make my own vent so that the water would flow through the hose to my blue tote.
The new 2019 2318G I'm looking at doesn't have a vent on either the shower drain or the sink drain. So I may make it easier on myself and put my blue tote directly under the shower drain and drop hose directly into blue tote, leaving blue tote vented. And for the sink drain, dropping a hose right to a bucket. I can either pour bucket into a toilet or into the blue tote. That way there less hose length and vent fittings to have to mess with.
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I didn’t see any additional vents on my sink or shower tank. I haven’t had any air lock issues. You shouldn’t have any air lock issues. The way I drain it to the 3in its the same as if you just hook up a hose to drain it to your blue tote. Just think of the 3in black as your blue tote. It’s definitely vented. You do have a vent. It’s the drain in your sink and shower worst case (if you have a shower). It’s definitely possible I’m missing something but, If it will drain in to a tote it will drain to a hose. It has to be vented or you wouldn’t be able to fill it. It would slowly fill with air burping back every time water replaced air.
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08-30-2018, 10:36 AM
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#14
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Senior Member
Join Date: Sep 2012
Location: Virginia
Posts: 9,900
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I guess I am confused as to what I am looking at as we have one dumping point for all three tanks.
But just a question could you use two "Rhino" hoses with a "Y" connector and have the same thing??
__________________
2005 Dodge 3500 Cummins
2017 Wildwood Lodge 4092 BFL
1966 Mustang GT
1986 Mustang SVO
Lillie Spoiled Rotten Boxer Mix
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08-30-2018, 11:43 AM
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#15
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Senior Member
Join Date: Jun 2011
Location: Big brown desert
Posts: 3,003
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My grey water to 3in sewer mod
That looks much easier than what I was using
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2014 Stealth Evo 2850- "Woodstock"
2011 Toyota Tundra Rock Crawler TRD 5.7- "Clifford"
2013 Honda Accord Coupe V6 w/Track Pack- "Julia"
Just glad to get away
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08-30-2018, 09:34 PM
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#16
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Member
Join Date: Aug 2018
Posts: 83
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Quote:
Originally Posted by Oaklevel
I guess I am confused as to what I am looking at as we have one dumping point for all three tanks.
But just a question could you use two "Rhino" hoses with a "Y" connector and have the same thing??
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I suppose I could. I couldn’t find the correct adapter.
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09-03-2018, 08:52 PM
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#17
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Senior Member
Join Date: Aug 2015
Location: Cape Cod
Posts: 320
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Quote:
Originally Posted by Itwrx
Ok it’s not really a “mod” as much as it’s my solution to a problem that never should have been a problem. We full hookup camp about 90% of the time. Family with young kids it’s just the only way to go. So why would forestriver not connect the grey water tank to the black 3in dump like EVERY trailer on earth?!?!? I know people have replumbed the grey to the black. Maybe I will too until then here is my solution. I used a sewer clean out adapter (had to remove the one way rubber flap with pliers). I still have a ball valve to keep black water from going in to the grey water tank. Then I simply attached a short hoes and done! I can take a shower and use the sink as much as I want. I only drain the black when it’s full. Cheap and easy solution.
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Ya my problem exactly.
here is my setup.
My Mom had a Fleetwood Niagra Pup, which was done right with the Gray water draining into the black water with 2 shutoff's, so when u drain the black water u close the valve to the gray water or vise versa.
Ur right forest river needs to get it right. I was hoping when I traded in my 2010 296 with the same issue they fixed it in 2018.
Once my 5yr extended warranty runs out I'm gonna fix the problem and make it right.
2018 Rockwood HW296.
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2020 Ford F-150 Limited
Color Rapid Red
2018 Rockwood Premier HW296
Cowboy6201
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09-04-2018, 07:27 PM
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#18
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Senior Member
Join Date: May 2017
Location: Southeast
Posts: 1,047
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My former popup has Black Tank and 1-1/2 or 2" outlet T valve. I used a Y connection setup like you did, left a loop at the bottom to give a seal from gas coming back up. Left grey valve open.
__________________
2018 Forest River Rockwood Roo
24WS
2019 Ford SD F-350 SRW Lariat
Tow & Gooseneck Prep
FX4 Off Road (4X4)
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09-04-2018, 07:28 PM
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#19
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Senior Member
Join Date: May 2017
Location: Southeast
Posts: 1,047
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I also made up a short hose just for this hookup.
__________________
2018 Forest River Rockwood Roo
24WS
2019 Ford SD F-350 SRW Lariat
Tow & Gooseneck Prep
FX4 Off Road (4X4)
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