Extensions for gray and black tank valves - Outback platform
Photomom
Member Posts: 2,217
We have only dumped our gray and black tanks a couple times and it is very difficult to remove the covers, especially the black tank cover. We have the outback platform with bins bolted on and I practically have to crawl under the platform to open that valve.
If you use the extensions, I assume you leave them on all the time? Would I need to secure them to something (the platform?) so they don't move or fall off? What keeps them from twisting off when you twist the sewer hose to remove it?
Finally, can someone who's done this tell me EXACTLY what I need to get?
If you use the extensions, I assume you leave them on all the time? Would I need to secure them to something (the platform?) so they don't move or fall off? What keeps them from twisting off when you twist the sewer hose to remove it?
Finally, can someone who's done this tell me EXACTLY what I need to get?
John and Henrietta, Late 2016 T@B S Max in Western New York
Comments
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I have this extension on my gray water outlet. (Have Q model T@B, so I don't have black water.) It locks into place and stays firmly there. You take the cap off of the original outlet and place it on the end of this one. Hope this helps.
Camco Sewer Hose AdapterEd & Tea
Linden, VA
2016 T@B Q Max Outback Package - 2015 Toyota Tacoma TRD Off Road
Shenandoah Valley T@BBERS -
This is what I ended up doing. I added a 5" extension to the gray outlet to bring the outlet to the front of the platform. I added a 90 degree elbow and a 5" extension to the black water outlet so we don't have to reach under the platform. Both are now accessible without getting down on the ground. All of these parts are clear Valterra parts from Amazon. I didn't like the look of the orange Camco ones.
I also found these fantastic caps on Amazon, also Valterra. They have handles on them so they are much easier to turn to put them on or take them off.

John and Henrietta, Late 2016 T@B S Max in Western New York -
What on earth am I going to do this winter when I don't have the T@B to do mods to?John and Henrietta, Late 2016 T@B S Max in Western New York
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Looks good, @Photomom. I especially like the handles. Amazon here I come after I put two more screws in place.Verna, Columbus, IN
2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck” -
The caps are these. I like the hose connection for the gray tank but didn't see a cap without it for the black tank. A little pricy but there was this one time I literally wasn't able to remove the gray tank cap and ended up driving home and dumping it in the driveway. Unless you have really strong hands the caps are hard to turn without the handles.
https://www.amazon.com/gp/product/B0006MRR2Q
John and Henrietta, Late 2016 T@B S Max in Western New York -
Don't you still have to crawl under to open the grey valve? Or can you do it by feel from the space between the platform and front of the trailer?2016 Outback 320
2024 Ford F150 Supercrew short bed. -
Why not buy a waste valve extension? Lots of different lengths and different operation functions.
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Is that something different than these?jdargis said:Why not buy a waste valve extension? Lots of different lengths and different operation functions.John and Henrietta, Late 2016 T@B S Max in Western New York -
I can reach those okay, the problem was getting under there far enough to apply sufficient force to the caps.OutbackAZ said:Don't you still have to crawl under to open the grey valve? Or can you do it by feel from the space between the platform and front of the trailer?
John and Henrietta, Late 2016 T@B S Max in Western New York -
Sorry, should have stated as dump valve handle extensions.
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Oh, cool, didn't know those existed. We'll try things out this weekend and keep those in mind.jdargis said:Sorry, should have stated as dump valve handle extensions.John and Henrietta, Late 2016 T@B S Max in Western New York -
@Photomom do you leave those extensions on all of the time?Photomom said:This is what I ended up doing. I added a 5" extension to the gray outlet to bring the outlet to the front of the platform. I added a 90 degree elbow and a 5" extension to the black water outlet so we don't have to reach under the platform. Both are now accessible without getting down on the ground. All of these parts are clear Valterra parts from Amazon. I didn't like the look of the orange Camco ones.
I also found these fantastic caps on Amazon, also Valterra. They have handles on them so they are much easier to turn to put them on or take them off.

2021 T@b 320 Boondock "Mattie Ross" | 2021 T@b Nights: 239 | Total nights in a T@b 455 | 2022 Jeep Grand Cherokee L Overland | T@b owner since 2014
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I lost a gray water section just ahead of the valve somewhere up near Sante Fe, NM a month ago, has anyone found it????Mike - Elmira, Mi / 2019 T@B 400 / 2021 Chevy Silverado LTZ
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Michigan_Mike said:I lost a gray water section just ahead of the valve somewhere up near Sante Fe, NM a month ago, has anyone found it????
There's some place where lost caps, valve pieces and some escaped hoses congregate and have parties. I have no idea where this is, but I suspect there's a lot of them out there!!
2017 820R Retro Toy Hauler from 2015 Tabitha T@B from 2009 Reverse LG Teardrop (but a T@Bluver at heart) -
@Photomom, I like those caps!!!2017 820R Retro Toy Hauler from 2015 Tabitha T@B from 2009 Reverse LG Teardrop (but a T@Bluver at heart)
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Photomom... Would you kindly share the Amazon order numbers, please. I have an action packer bolted to that side of the platform and can't reach the outlets. Thank you in advance.2017 white/black trim T@B Outback; 2017 white Subaru Outback; Seattle
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Photomom... please disregard. I found what I needed.2017 white/black trim T@B Outback; 2017 white Subaru Outback; Seattle
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Michigan_Mike said:I lost a gray water section just ahead of the valve somewhere up near Sante Fe, NM a month ago, has anyone found it????
I have thought if left on permanently you might want to use either a zip the it hose clamp or other wire to help it from dragging or hanging. Not to say that you still wouldn't have lost your' s.2021 T@b 320 Boondock "Mattie Ross" | 2021 T@b Nights: 239 | Total nights in a T@b 455 | 2022 Jeep Grand Cherokee L Overland | T@b owner since 2014
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I think I've got an idea where it might be (Cottonwood campground just north of Santa Fe, NM) but it was hard enough getting back into their sites and when I dumped the tanks I suddenly noticed that the gray water pipe beyond the valve was gone! I'm thinking it is somewhere back in the hilly portion of the campground..... Oh well, onward!Mike - Elmira, Mi / 2019 T@B 400 / 2021 Chevy Silverado LTZ
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