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Old 04-16-2016, 07:48 PM   #1
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Identifying black tank vent vs gray tank vent 8281WS

I'm considering putting cyclone vents on our black tank vents, but I notice that one of the front bathroom vents is extremely close behind the bathroom fan/vent cover.

I'm hoping someone could tell me whether that is the black or gray tank vent ?

Looking from the back of the 5er the bathroom is on the right hand side, nearest the door, and there is one vent pipe on that side, near the ceiling fan/vent, and another vent pipe on the opposite side.

Any help identifying which is which would be appreciated, since if I put a cyclone vent cap on the right-hand vent pipe it would likely hit against the fan cover, but the other one would be clear.
No need to put a cyclone on the gray tank vent cap.

I'm hoping they wouldn't be stupid enough to put the black tank vent right near the ceiling fan, but it wouldn't surprise me
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Old 04-17-2016, 07:21 AM   #2
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You could always use a vacuum shop and push air through the black tank drain valve and see which vent air comes out of it......
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Old 04-17-2016, 08:19 AM   #3
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Quote:
Originally Posted by leefl View Post
I'm considering putting cyclone vents on our black tank vents, but I notice that one of the front bathroom vents is extremely close behind the bathroom fan/vent cover.

I'm hoping someone could tell me whether that is the black or gray tank vent ?

Looking from the back of the 5er the bathroom is on the right hand side, nearest the door, and there is one vent pipe on that side, near the ceiling fan/vent, and another vent pipe on the opposite side.

Any help identifying which is which would be appreciated, since if I put a cyclone vent cap on the right-hand vent pipe it would likely hit against the fan cover, but the other one would be clear.
No need to put a cyclone on the gray tank vent cap.

I'm hoping they wouldn't be stupid enough to put the black tank vent right near the ceiling fan, but it wouldn't surprise me
Here's a pic of the vent leefl is referring to.
After looking at it bud I have a feeling it's a black tank vent. It lines right up with the wall behind that toilet. Good thing my fan only blows out in that bathroom.


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Old 04-17-2016, 09:12 AM   #4
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Put a bottle of cinnamon oil in your black tank. You will definitely smell it. It is used by plumbers to help locate sewer gas leaks. Of course, our first choice is a smoke test.

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Old 04-17-2016, 10:07 AM   #5
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Here's a pic of the vent leefl is referring to.
After looking at it bud I have a feeling it's a black tank vent. It lines right up with the wall behind that toilet. Good thing my fan only blows out in that bathroom.
I have the same feeling, but since the tanks are fairly big, it could feasibly be the other side (if I were laying out the camper I'd put the black vent as far away from the ceiling fan as possible, but it may be wishful thinking to assume that FR designers had such thoughts)

I forgot that you have the lighter color camper. Ours is the Diamond package which has the darker exterior, where I guess yours is the Platinum package. Otherwise identical
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Old 04-17-2016, 10:08 AM   #6
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You could always use a vacuum shop and push air through the black tank drain valve and see which vent air comes out of it......
Thanks, nice idea, however unfortunately I always leave a couple of gallons of water in the black tanks to avoid them drying up, and don't have anywhere to dump that either at the storage lot or at home
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Old 04-17-2016, 10:10 AM   #7
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Put a bottle of cinnamon oil in your black tank. You will definitely smell it. It is used by plumbers to help locate sewer gas leaks. Of course, our first choice is a smoke test.

Bruce
Interesting idea. I guess my concern is that it might stink out the camper if left in there until I next have a chance to dump the tanks (likely not before our big trip in 7 weeks)
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Old 04-17-2016, 10:11 AM   #8
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Thanks, nice idea, however unfortunately I always leave a couple of gallons of water in the black tanks to avoid them drying up, and don't have anywhere to dump that either at the storage lot or at home
Then put the hose down your toilet.

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Old 04-17-2016, 10:12 AM   #9
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Interesting idea. I guess my concern is that it might stink out the camper if left in there until I next have a chance to dump the tanks (likely not before our big trip in 7 weeks)
Peppermint oil is another option. Maybe that wouldn't be so bad.

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Old 04-17-2016, 10:29 AM   #10
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Just climb on the roof and have someone flush the toilet ... you can easily hear the water drop in the tank while listening at the vents.
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