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Old 11-27-2014, 06:33 AM   #1
mhjr5500
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Unhappy keystone alpine backflush

why did it push up the toilet in the lower section when I back flushed my black water tank? I had the black tank valve open and the 2 gray water valves closed
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Old 11-27-2014, 06:35 AM   #2
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Are you sure the valves aren't mislabeled.
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Old 11-27-2014, 06:41 AM   #3
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Have you used it before?? As Javi said it is very common that dump valves are labeled wrong. Regardless of labels the black tank should be vented through the roof and you should have had a black smelly volcano out that vent before lifting the toilet. Unless you mean waste came up in the toilet???
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Old 11-27-2014, 06:42 AM   #4
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Welcome to the forum

Mis labeled valves is one possibility, and it seems more common than not. If your sure the valves are labeled right, then it's possible that the vent line may be inserted to far into the tank.

Once the water level reaches the vent line, it will take the path of least resistance. Your toilet is at a much lower elevation than the top of the vent.
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Old 11-27-2014, 06:57 AM   #5
mhjr5500
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Quote:
Originally Posted by Javi View Post
Are you sure the valves aren't mislabeled.
no, not sure, first time using it. it is a new trailer
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Old 11-27-2014, 07:00 AM   #6
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no, not sure, first time using it. it is a new trailer
Not really unusual for the handles to be mislabeled...

When you say lifted.... exactly what do you mean???
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Old 11-27-2014, 07:06 AM   #7
mhjr5500
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Not really unusual for the handles to be mislabeled...

When you say lifted.... exactly what do you mean???
it pushed it right off the floor. took the screws that hold the flange right out of the floor about an inch
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Old 11-27-2014, 07:12 AM   #8
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it pushed it right off the floor. took the screws that hold the flange right out of the floor about an inch
Wow, that's some backpressure.... if you're not good with tools you're gonna have to take it to the dealer to get that fixed. Until then close the valve you got open and pull the others so you can empty the tank.

If you pull them one at a time you should be able to tell which is really the black tank cause the toilet ought to go back down.


Sounds to me that the dealer didn't check the valves during his PDI and it also sounds like the vent is too far into the tank, otherwise as mentioned you'd have seen a rain of poop running off the roof.
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Old 11-27-2014, 07:18 AM   #9
mhjr5500
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Wow, that's some backpressure.... if you're not good with tools you're gonna have to take it to the dealer to get that fixed. Until then close the valve you got open and pull the others so you can empty the tank.

If you pull them one at a time you should be able to tell which is really the black tank cause the toilet ought to go back down.


Sounds to me that the dealer didn't check the valves during his PDI and it also sounds like the vent is too far into the tank, otherwise as mentioned you'd have seen a rain of poop running off the roof.
already have it back down in place. now this unit has 1 black tank to pull and 2 gray water pulls. it also has 2 back flush ports. i'm thinking mislabeled valve controls too now.
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Old 11-27-2014, 07:20 AM   #10
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already have it back down in place. now this unit has 1 black tank to pull and 2 gray water pulls. it also has 2 back flush ports. i'm thinking mislabeled valve controls too now.
See my pm....
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