Gray vs Black water tanks
- Oldbagpipe
- Seasoned Traveler
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- B190 Year: 1989
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Gray vs Black water tanks
Again, I am trying to learn. In the process of pulling the carpet I was looking under the galley sink and the standard piping leads to a hose. The hose was coiled up next to the generator and appears that the prior owner just pulled the hose out and let the gray water drain. I went under the rig and only one tank exists, running from side to side with the drainage valves at the rear side, directly below the head. Did the first year ('89) have two specific tanks, did both gray and black empty to one tank, or do I just have some kind of misfit?
- skater
- Site Admin
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- Joined: Thu Mar 08, 2007 1:00 am
- B190 Year: 1991
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- Location: Annapolis, MD
Gray vs Black water tanks
Is there one drain valve or two at the tank?
There was a movement to switch to one combined tank, apparently- my '91 owners manual claimed there was only one, but in fact the camper had two. The tank with the smaller pipe leading to the valve will be the gray water tank.
In some areas it is acceptable to allow gray water to drain on the ground. But that would require separate tanks. That's probably what the hose you found was for. I carry one in our trailer, too.
There was a movement to switch to one combined tank, apparently- my '91 owners manual claimed there was only one, but in fact the camper had two. The tank with the smaller pipe leading to the valve will be the gray water tank.
In some areas it is acceptable to allow gray water to drain on the ground. But that would require separate tanks. That's probably what the hose you found was for. I carry one in our trailer, too.
1991 Airstream B190 - bought, 2005; sold, 2011; bought 2017
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
- Oldbagpipe
- Seasoned Traveler
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- Joined: Tue Dec 22, 2015 9:05 pm
- B190 Year: 1989
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Re: Gray vs Black water tanks
This flyer only mentions one tank.
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- Oldbagpipe
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- Joined: Tue Dec 22, 2015 9:05 pm
- B190 Year: 1989
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Re: Gray vs Black water tanks
and only one valve. That must be the case, now I just have to plumb it in.
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- skater
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- B190 Year: 1991
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- Location: Annapolis, MD
Re: Gray vs Black water tanks
Okay, so it looks like you have a single combined tank - the gray water likely runs to that tank as well. (They stopped just draining graywater on the ground in the 60s.) What do you need to plumb in?Oldbagpipe wrote:and only one valve. That must be the case, now I just have to plumb it in.
1991 Airstream B190 - bought, 2005; sold, 2011; bought 2017
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
- Oldbagpipe
- Seasoned Traveler
- Posts: 149
- Joined: Tue Dec 22, 2015 9:05 pm
- B190 Year: 1989
- WBCCI: 0
- Location: PNW
Re: Gray vs Black water tanks
The sink drain is connected to a hose which is rolled up and sitting on the generator.
- skater
- Site Admin
- Posts: 2593
- Joined: Thu Mar 08, 2007 1:00 am
- B190 Year: 1991
- WBCCI: 13270
- Location: Annapolis, MD
Re: Gray vs Black water tanks
Oh! I didn't understand that from your first post. Yeah, that's...not right.Oldbagpipe wrote:The sink drain is connected to a hose which is rolled up and sitting on the generator.
1991 Airstream B190 - bought, 2005; sold, 2011; bought 2017
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
1995 Airstream Excella 30' trailer
WBCCI #13270, Washington, DC Unit
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- Weekend Camper
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- B190 Year: 1989
- Location: Seattle
Re: Gray vs Black water tanks
I stumbled on this looking to deal with a black water tank shut off valve. My 89 has grey water by pass that will shunt it off of the black water system in the cabinet over the hot water tank and sends it to the deck and across to collect the bathtub drain and then into the section of the waste system after the black water shut off valve. I suppose that the logic was because there is a hose connection on the waste system outlet cap, in many situations you could drain the grey water to the ground and save capacity in the black water tank.
I only know this because I am trying to locate a leak in the freshwater system. In the process, I noted that the gate valve on my black water system was stuck and I was looking for information on how to unstick it without breaking it.
I only know this because I am trying to locate a leak in the freshwater system. In the process, I noted that the gate valve on my black water system was stuck and I was looking for information on how to unstick it without breaking it.