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Old 05-20-2020, 05:20 PM   #1
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Opinion on venting grey tank.

Hopefully pics speak for themselves. I don't want to vent out the roof so i would lile to vent out the side. I don't see a problem with this set up but I'd like to hear some opinions. This is for the grey water tank. I can add more details when i get to my laptop. This is the drain set up i was planning for the kitchen sink. This will be the only thing draining into the grey water tank.20200520_141202.jpg20200520_141228.jpg20200520_141302.jpg20200520_141306.jpg
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Old 05-20-2020, 05:48 PM   #2
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Iím not an expertóhowever I donít see any issues with this set up and I think it would work fine.
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Old 05-20-2020, 05:53 PM   #3
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Seems like it would work fine, but it might get stanky and being right under the window you might smell it.
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Old 05-21-2020, 10:09 AM   #4
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True, it might stink, but i can treat the water as well. For the black tank, i will have the room to vent out the roof. Definitely don't wanna smell that!
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Old 05-21-2020, 10:13 AM   #5
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Quote:
Originally Posted by Rovobay View Post
True, it might stink, but i can treat the water as well. For the black tank, i will have the room to vent out the roof. Definitely don't wanna smell that!
It might not stank too, I just don't know. Our composting terlet vents out the side of the bus and we rarely notice it.
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Old 05-21-2020, 10:19 AM   #6
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The only thing I see is that your sink drain looks like it's higher than the tank vent. That might pose a problem, but I don't know what. I don't want to cut holes in my roof either so I'm planning on venting out the wall with one of these, only I will go as high on the wall as possible, with a 21" roof raise, that should be about 9' off the ground.

https://www.amazon.com/dp/B006R5LND0...v_ov_lig_dp_it

https://www.amazon.com/dp/B073ZCHCCS...v_ov_lig_dp_it

I prefer the stainless, but everything else on my bus will be black, so probably go with the plastic one.
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Old 05-21-2020, 10:30 AM   #7
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Stinky stinky
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Old 05-21-2020, 10:57 AM   #8
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We side vent the composting toilet and grey tanks with the same line. Toilet goes through floor into Tee, which comes from greys and goes out the wall just under the floor.
side_venting_40%.jpg

I take coolant hose to the roof- easier to work with. Its not final as I need to attach a vent cap to it (probably once I put the wind guards for the panels up) but the idea is all there. I get to the roof without going out the ceiling.

With the toilet fan going vinegar vapor makes it all the way up there. You probably don't want the stink right at eye level.
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Old 05-21-2020, 12:04 PM   #9
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Quote:
Originally Posted by Rovobay View Post
Hopefully pics speak for themselves. I don't want to vent out the roof so i would lile to vent out the side. I don't see a problem with this set up but I'd like to hear some opinions. This is for the grey water tank. I can add more details when i get to my laptop. This is the drain set up i was planning for the kitchen sink. This will be the only thing draining into the grey water tank.Attachment 44745Attachment 44746Attachment 44747Attachment 44748
It may work,it may work just ok or not at all depending on wind, atmospheric pressure, the orientation you park the bus, etc.
You need to think of vents like wood stove chimney's, in order to get the best performance they need to be completely above the structure to get the best draw. On the side of the bus that's not going to happen.
Just saying if it was mine I'd find a way to get it to the roof.
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Old 05-21-2020, 12:25 PM   #10
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Originally Posted by Oscar1 View Post
Just saying if it was mine I'd find a way to get it to the roof.


If the side approach worked, tens of thousands of RV's would be done this way since it would save the manufacturer a few pennies.
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Old 05-21-2020, 04:11 PM   #11
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Quote:
Originally Posted by JackE View Post
The only thing I see is that your sink drain looks like it's higher than the tank vent. That might pose a problem, but I don't know what. I don't want to cut holes in my roof either so I'm planning on venting out the wall with one of these, only I will go as high on the wall as possible, with a 21" roof raise, that should be about 9' off the ground.

https://www.amazon.com/dp/B006R5LND0...v_ov_lig_dp_it

https://www.amazon.com/dp/B073ZCHCCS...v_ov_lig_dp_it

I prefer the stainless, but everything else on my bus will be black, so probably go with the plastic one.
I would put the vent as high as I could. Still exploring options. Thanks
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