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Elbow combines cable black-water valve, cable gray-water valve, and two sewer lines. 3" Hub slides over black-water line. 1-1/2" Hub slides onto gray-water line. 2" Hub and 3" spigot connects to 2 separate sewer pipes.
Features:
This RV sewer elbow with rotating valves is a part of your motor home's waste management system. The elbow combines the flow of wastewater from your gray-water tank and your black-water tank. Cable operated valves can be actuated remotely (cable not included). Connect your sewer hose to the 3" lug fitting on the elbow and open the valves to drain your holding tanks.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, there. I'm Michael with etrailer.com. Today, we're gonna take a quick look at this Double RV Waste Valve Elbow. This is gonna combine your 1 1/2 inch gray water tank waste valve, and your three-inch black water tank waste valve, merge that flow of waste to one sewer line. So this can be used as a replacement part for a similar item or as an upgrade for your existing setup. One of the main features of this unit is that it's going to give you these cable-controlled valves.
So it's gonna offer a remote activation for those inconvenient and hard to reach locations. So once we hook our cable up to this little rod here, it's going to allow us to open and close that valve so we can determine which tank we're wanting to empty, like so. So very easy to use. Now those cables are sold separately. We do have several different options available for you here at etrailer.com.
It really just depends on the length that you need. So if you need a 72-inch, we've got that part number on the screen there, a 96-inch and a 120-inch, all available here at etrailer.com. So it just depends on how much distance you're needing to cover with that cable, but it should be very easy to get this set up once you have the right cable. So you wanna make sure that you're ordering that when you're getting this. This can be installed in just about any angle.
You do obviously wanna make sure that gravity is going to be working with you rather than against you, to get that waste flowing out. These control valves are gonna be able to rotate 100 or 360 degrees. So you can set them up in whatever orientation is gonna work best for you, so that you can get everything flowing in the right direction. So to get this installed, it's gonna be very, very simple. Your three-inch hub here is gonna slide over your RV's black water line.
Your 1 1/2 inch hub will slide over your gray water line. You have this two-inch hub up here at the top. It's gonna slide over your sewer pipe. And then your three-inch spigot here is gonna slide into your separate sewer lines. So very easy to get all that put together. This is constructed of a black ABS plastic. So it is gonna be very, very durable for you. If you don't already have some, I would recommend picking up some ABS solvent cement to seal all those connections, make sure that you're not gonna have any unpleasant leaks. But overall, really nice option here, especially for those of you who do need a little bit more remote access to your openings here. Being able to control those cables is gonna make it much easier for you. So that's gonna complete our look for today. Again, I'm Michael with etrailer.com. Thanks for watching..
Ratings & Reviews
Did not receive package
Just what we needed. Have a destination trailer with a 250 black water above ground tank. The gates help us keep the gray water flowing into a dry well and we can dump black when needed.
Just what I needed to replace my 22 year old valves.
exact part great service
The original black and gray valves were not together and were located under the slideout. A minor relocation made access much more convenient. Customer service was outstanding and the valve assembly worked perfect.
Timely and delivery
All of these pieces went together as designed. I replaced the old design which allowed black water from my RV to contaminate the second grey water line; with the new design that allows me to open and shut each line as needed to prevent cross contamination.
It’s what I ordered it looks really good. And it got here really fast .
Exactly what I needed for my farm (non-trailer) application, this will work perfectly and at a good price. Parts came quicker than expected and it's almost Christmas.
Product works perfectly and is exactly as described. Seals are tight and had no issues with leaking or difficulty with getting the part into place. I would highly recommend. Had a blowout destroy the previous valve setup and etrailer's customer support was very helpful in finding us a part that would go right in. We were able to get back to rolling thanks to their help.
Thanks for the follow up.
The shipping was great and the parts got here on time.
I did the installation today.
Attached are before and after pics
The others are after I finished - no more cable actuated valves - YAY!
Feel free to post them!
Installed it about 2 months ago, have not had any problems with it. Much needed upgrade on my '70s model Airstream, worked great in such a tight space, the only one I found that would fit. Also I really like doing business with etrailer, they always email you an update you on the status of your order, great customer service!
Great customer service.. Fast shipping
. keep me updated to date on the item being shipped
I went to the big RV store, you know the one, to get my broken dump pipe fixed. They said they had no parts that would fit and they would just go to the hardware store for parts and build it from scratch.
I decided to search the web and found exactly what I needed at eTrailer.
I thought the replacement part T81 would need some modification to fit but it didn't. Greg was very helpful and got the order out that same day. Another project done.
Here's some photos. You can see that I used the existing fittings on the RV pipes and just bolted on the new waste valves and elbow. Took about an hour.
Never had to fix somthing like this. etrailer made it stress free! Great price, the part showed up a day early and the install left me feeling like I hadn't done much at all! Thank you etrailer!
Worked perfectly in a 2023 Lance 855s truck camper.
Purchased as a replacement for one that was damaged on a 1996 RV. It was a perfect fit. The folks at etrailer were very helpful and courteous.
Not easy to install in such a small area. No issues with product but installation a bit difficult.
The double waste valve assembly looked pretty well-made. However, I had to return it as the ends didn't match my motorhome. I chatted with Audrey through email and she was very helpful.
I tried to contact e-Trailer shortly after I ordered it, to cancel. Their customer Service process is crap. It took 3 business days for them to respond. By then the order had shipped. Bottom line, I had to pay the return shipping. I'll just go back to [online vendor]. Free returns.
Installation was a breeze. I purchased a 2ft section of 3" & 1-1/2" ABS pipe, two 1-1/2" right angle, one 1-1/2"coupler and one 3" coupler, cleaner (MEK/Acetone) and ABS cement. I cut all pieces first fitted them all first before gluing. Prepared all sections with cleaner first before applying ABS cement. Pictures show the "before" with duct tape in leaking sections.
Works great. I made a plan and upgraded my RV waste plumbing to be 3" for both the black and grey tanks. Additionally I used flexible rubber fittings for some of the longer pieces instead of gluing it all together. This will be more serviceable in the future if any of the sections of pipe were to fail. I had to replace this valve because the grey tank pipe split along the pipe seam for the second time. Overall, this valve was exactly what I expected and fit with my plumbing plan perfectly.
OEM replacement for the valve setup in my Roadtrek 210. Perfect!
Exactly what I needed.
So glad I found trailer. This was the only place I found this exact item. Quick shipping, great deal. Thanks Mike
Dave
8/3/2025
Glad I could find this piece, works great.
Do you have a question about this RV Waste Valve?
Info for this part was:
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Brooke M.
3/27/2025
Awesome! :) Thanks, Darin