Dump Valve mod

[rubicon327]

I have decided to take on this mod. Thanks to Ron for leading the way. I will consider trying to pipe it up with a long radius sanitary tee in the 1-1/2” gray water line to maintain the ability to get a direct shot with a hose up into the gray tank. I have found that a strong stream dislodges crud in the tank similar to (or maybe better than?) a permanent tank rinse.

This is the part I bought:
https://www.amazon.com/Valterra-T80-.../dp/B002N5L9T6

Might try to incorporate this with a cap:
https://www.homedepot.com/p/1-1-2-in...D112/100346283

I understand the newer trailers are now done this way. Great job Escape for continually improving. Looking forward to both dump handles coming out straight to the side. The gray is not only sideways currently it is too far back under the trailer making it quite awkward to use.

[tdf-texas]

Originally Posted by rubicon327

I have decided to take on this mod. Thanks to Ron for leading the way. I will consider trying to pipe it up with a long radius sanitary tee in the 1-1/2” gray water line to maintain the ability to get a direct shot with a hose up into the gray tank. I have found that a strong stream dislodges crud in the tank similar to (or maybe better than?) a permanent tank rinse.

This is the part I bought:
https://www.amazon.com/Valterra-T80-.../dp/B002N5L9T6

Might try to incorporate this with a cap:
https://www.homedepot.com/p/1-1-2-in...D112/100346283

I understand the newer trailers are now done this way. Great job Escape for continually improving. Looking forward to both dump handles coming out straight to the side. The gray is not only sideways currently it is too far back under the trailer making it quite awkward to use.

Using a 3" hub x 3" hub ell with a 3" to 2" offset reducer makes for a faster draining grey tank. I put a 1 1/2" to 2" adapter right next to the tank and ran the rest in 2" pipe.

https://www.amazon.com/Valterra-T84-...rra+3+inch+ell

[rubicon327]

Originally Posted by tdf-texas

Using a 3" hub x 3" hub ell with a 3" to 2" offset reducer makes for a faster draining grey tank. I put a 1 1/2" to 2" adapter right next to the tank and ran the rest in 2" pipe.

https://www.amazon.com/Valterra-T84-...rra+3+inch+ell

Thanks. Wish I saw this sooner. Amazon box just arrived. I think I will return and follow your lead. Besides the faster draining I like the idea that both valves are the same size. This allows you to carry only one spare if you choose to do so.

Is this what you used at each end?

https://www.amazon.com/Valterra-T104...IqL&ref=plSrch

https://www.amazon.com/LaSalle-Brist...F2+abs+reducer

[tdf-texas]

Originally Posted by rubicon327

Thanks. Wish I saw this sooner. Amazon box just arrived. I think I will return and follow your lead. Besides the faster draining I like the idea that both valves are the same size. This allows you to carry only one spare if you choose to do so.

Is this what you used at each end?

https://www.amazon.com/Valterra-T104...IqL&ref=plSrch

https://www.amazon.com/LaSalle-Brist...F2+abs+reducer

I clicked on your links and they came up "You purchased this item on ...". Yep - that's them.

I used this to correct the 3" black pipe slope.
https://www.lowes.com/pd/Fernco-3-in...ngs/1000075327

Here are some more pics of the install.

[rubicon327]

Originally Posted by tdf-texas

I clicked on your links and they came up "You purchased this item on ...". Yep - that's them.

I used this to correct the 3" black pipe slope.
https://www.lowes.com/pd/Fernco-3-in...ngs/1000075327

Here are some more pics of the install.

Thanks Tom. I shouldn’t have to deal with the black pipe slope since it is a 19. My arrangement should be identical or very close to Ron’s. I will try to move the assembly forward so the new unit is attached right near the 90 off the bottom of the tank. This will give me more room to swing back to the gray tank without any crazy fittings.

[tdf-texas]

Originally Posted by rubicon327

Thanks Tom. I shouldn’t have to deal with the black pipe slope since it is a 19. My arrangement should be identical or very close to Ron’s. I will try to move the assembly forward so the new unit is attached right near the 90 off the bottom of the tank. This will give me more room to swing back to the gray tank without any crazy fittings.

Looks like you're on a roll! We want pics when it's done.

Are you going to put the T and cap in the drain line so you have the straight flush path?

[tdf-texas]

Originally Posted by rubicon327

Thanks Tom. I shouldn’t have to deal with the black pipe slope since it is a 19. My arrangement should be identical or very close to Ron’s. I will try to move the assembly forward so the new unit is attached right near the 90 off the bottom of the tank. This will give me more room to swing back to the gray tank without any crazy fittings.

The fitting I used to make the 90 turn from the grey tank is
https://www.homedepot.com/p/2-in-ABS...2HD2/100342577

It keeps the distance from the grey pipe to the valve the shortest I could find.

[rubicon327]

Originally Posted by tdf-texas

Are you going to put the T and cap in the drain line so you have the straight flush path?

I'm hoping I have room for a long radius sanitary tee, but I'll need to see how much room I have to work with and how things align. If I cannot get a straight shot up into the tank then it is not worth it.

https://www.homedepot.com/p/2-in-ABS...-100344794-_-N

Originally Posted by tdf-texas

The fitting I used to make the 90 turn from the grey tank is
https://www.homedepot.com/p/2-in-ABS...2HD2/100342577

It keeps the distance from the grey pipe to the valve the shortest I could find.

Thanks. I will keep this in mind if space is tight.

[ATHiker]

Question. Does the Valterra T80 double rotating black valve have the same hole pattern as the black valve installed by ETI? If they are the same hole pattern, I could avoid cutting the black tank fitting.

[tdf-texas]

Originally Posted by ATHiker

Question. Does the Valterra T80 double rotating black valve have the same hole pattern as the black valve installed by ETI? If they are the same hole pattern, I could avoid cutting the black tank fitting.

Are you wanting to just replace the ETI installed LaSalle Bristol dump valves with new ones or are you wanting to do the dump mod?

If you want to do just a replacement, yes they have the same hole pattern. A Valterra valve will replace a standard LaSalle Bristol unit. You can simply slide out the LaSalle Bristol valve, slide in the Valterra unit, and bolt it back in place.

If you are wanting to do the dump mod, you would be replacing the T80 with a T84 which is longer and would necessitate cutting the black tank pipe to get it to line back up with the grey tank fitting.

[ATHiker]

Originally Posted by tdf-texas

Are you wanting to just replace the ETI installed LaSalle Bristol dump valves with new ones or are you wanting to do the dump mod?

If you want to do just a replacement, yes they have the same hole pattern. A Valterra valve will replace a standard LaSalle Bristol unit. You can simply slide out the LaSalle Bristol valve, slide in the Valterra unit, and bolt it back in place.

If you are wanting to do the dump mod, you would be replacing the T80 with a T84 which is longer and would necessitate cutting the black tank pipe to get it to line back up with the grey tank fitting.

Thanks. I have a 2015 Escape 21 and I'm wanting to do the dump mod to achieve the front pull valves. I have the spray insulation, which would have to be removed from the black tank pipe. Would the T80 work? I was unable to find drawings of the Valterra valves online.

[rubicon327]

Originally Posted by tdf-texas

If you are wanting to do the dump mod, you would be replacing the T80 with a T84 which is longer and would necessitate cutting the black tank pipe to get it to line back up with the grey tank fitting.

Tom: For clarification doesn't the trailer start out stock with a heel fitting on the gray water which would make it at T68?
https://www.etrailer.com/RV-Sewer/Valterra/T68.html

If ATHiker goes with a T80 he has the same pipe sizes and just needs to adjust the assembly accordingly towards the front of the trailer so he can swing a 90 degree elbow back towards the gray tank, right? This would still necessitate cutting the black tank outlet pipe.
https://www.etrailer.com/RV-Sewer/Valterra/T80.html

[tdf-texas]

Originally Posted by rubicon327

Tom: For clarification doesn't the trailer start out stock with a heel fitting on the gray water which would make it at T68?
https://www.etrailer.com/RV-Sewer/Valterra/T68.html

If ATHiker goes with a T80 he has the same pipe sizes and just needs to adjust the assembly accordingly towards the front of the trailer so he can swing a 90 degree elbow back towards the gray tank, right? This would still necessitate cutting the black tank outlet pipe.
https://www.etrailer.com/RV-Sewer/Valterra/T80.html

I didn't know that the earlier 21' had the T68 - thanks! Yes, to install either the T80 or T84, ATHiker will have to cut both the black tank and grey tank pipe to get it to fit - the T68 is considerably shorter and doesn't have the 90 deg fitting on the grey needed for the T80/T84.

To me it makes more sense to use the T84 if you have to cut black and grey tank piping anyway. Maybe a good time to do the mod?

[rubicon327]

Originally Posted by tdf-texas

I didn't know that the earlier 21' had the T68 - thanks! Yes, ATHiker would have to cut both the black tank and grey tank pipe to get it to fit - the T68 is considerably shorter than either the T80 or the T84.

As we have discussed before, to me it makes more sense to use the T84 if you have to cut black and grey tank piping anyway. Maybe a good time to do the mod?

Yes, but with the T84 he has to deal with a 3" gray tank fitting. Since he has underfloor foam he will need to upsize the line all the way back to the gray tank fitting which may be a real pain. He may have to dig out a lot more foam than desired.

[tdf-texas]

Originally Posted by rubicon327

Yes, but with the T84 he has to deal with a 3" gray tank fitting. Since he has underfloor foam he will need to upsize the line all the way back to the gray tank fitting which may be a real pain. He may have to dig out a lot more foam than desired.

Sorry, I posted, read it back, and then changed the #113 post.

To get the T68 out, he is going to have to cut the grey tank piping anyway - no way around it. He doesn't have to upsize the piping but he will have to add a 1 1/2' coupling and a (short piece of pipe plus a 90 fitting) or (long 90) to install either the T80 or T84.

The T84 can be installed with 1 1/2" pipe using a 3" x 1 1/2" offset reducer.
https://www.amazon.com/Valterra-T104...83879423&psc=1
so the pipe size doesn't have to change. The T84 gives the grey a little more slope from the grey tank to the drain and cuts the spare valve situation to one valve vs two.

I like the T84 for all the above reasons and the fact that the valve handles are not offset. With the T80, the grey valve handle is farther back under the trailer - I'm not bending in the middle like I used to and appreciate that the T84 handles are both out where I can easily reach them.

But the T80 is cheaper and still works - decisions!

[rubicon327]

Originally Posted by tdf-texas

Sorry, I posted, read it back, and then changed the #113 post.

To get the T68 out, he is going to have to cut the grey tank piping anyway - no way around it. He doesn't have to upsize the piping but he will have to add a 1 1/2' coupling and a (short piece of pipe plus a 90 fitting) or (long 90) to install either the T80 or T84.

The T84 can be installed with 1 1/2" pipe using a 3" x 1 1/2" offset reducer.
https://www.amazon.com/Valterra-T104...83879423&psc=1
so the pipe size doesn't have to change. The T84 gives the grey a little more slope from the grey tank to the drain and cuts the spare valve situation to one valve vs two.

I like the T84 for all the above reasons and the fact that the valve handles are not offset. With the T80, the grey valve handle is farther back under the trailer - I'm not bending in the middle like I used to and appreciate that the T84 handles are both out where I can easily reach them.

But the T80 is cheaper and still works - decisions!

I got you now.

ATHiker if you are serious about using the T80 I have one in the garage that I won’t be using since Tom convinced me to use the T84. If you want to cover shipping it’s yours.

[ATHiker]

Thanks for the input. I'm going to order the T84 and associated fitting have been listed on the thread and cut the black tank tube.

[ATHiker]

Originally Posted by rubicon327

I got you now.

ATHiker if you are serious about using the T80 I have one in the garage that I won’t be using since Tom convinced me to use the T84. If you want to cover shipping it’s yours.

Thanks for the offer, but I'm gong with the T84.

[tdf-texas]

Originally Posted by ATHiker

Thanks for the input. I'm going to order the T84 and associated fitting have been listed on the thread and cut the black tank tube.

This is a easy mod to do but let me know if I can be of any assistance. My 21' didn't have the foam so it was easier to see what needed to be done. Feel free to PM me for any pictures, parts list, etc. that you may need.

Oh, and I also have a spare T80 that came with the trailer if anyone needs it.

[rubicon327]

Originally Posted by tdf-texas

Looks like you're on a roll! We want pics when it's done.

Well the weather broke a little bit here in NJ and I finally got to the dump valve mod. Wish I was working on the south side of the trailer though. Of course the way it was situated I was in the shade on the north side and it was pretty cold with the wind. So this was a bit harder than I first conceived it to be. I had a good stock of parts but had to run out for two 45’s. Got rid of the stock flex connector on the 3” black tank line and installed the new assembly as far forward as possible. With an eccentric 3” to 2” reducer, one 90, two 45’s, a couple of small sections of 2” pipe, a 2” flex connector and a 1-1/2” to 2” adapter I was in business. Took a lot of thought and dry fitting of parts to get it just right, but I’m happy with the results. I tested the systems with 5 gallons each in the black and gray tanks. Everything was watertight and it drained very well. Thanks to Ron and Tom for leading the way. This mod is a combination of theirs as I used the T84 which gives me two 3” valves and I upsized the gray water line to 2”. Since this is done on a 19 I needed to sweep back to the gray tank fitting like Ron. Glad I got this done as the seal on the black tank valve was in poor shape.

The first photo is the stock configuration before I started.