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Open Roads Forum  >  Beginning RVing

 > Fresh water tank drain.

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Deb and Ed M

SW MI & Space Coast, FL USA

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Posted: 10/08/21 07:18am Link  |  Quote  |  Print  |  Notify Moderator

I always put about a quart of straight antifreeze in the black and gray tanks. The theory is that it keeps the seals on the gate valves lubricated and pliable

magicbus

Nantucket Island, MA

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Posted: 10/08/21 01:08pm Link  |  Quote  |  Print  |  Notify Moderator

From the 2009 Fleetwood Pulse Owners Manual (downloadable from fleetwoodrv.com):

“The main water tank "quick-drain" valve is located on the end of the water tank or on the sidewall adjacent to the water tank.”

Dave


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Lynnmor

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Posted: 10/08/21 02:53pm Link  |  Quote  |  Print  |  Notify Moderator

Deb and Ed M wrote:

I always put about a quart of straight antifreeze in the black and gray tanks. The theory is that it keeps the seals on the gate valves lubricated and pliable


If you use the cheap stuff that contains ethyl alcohol, your theory may not hold water.





IAMICHABOD

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Posted: 10/08/21 02:56pm Link  |  Quote  |  Print  |  Notify Moderator

On my Fleetwood Tioga the drain is attached to the water tank it looks like this,just turn the handle so it lines up with the pipe and it will drain. You may have to remove the plywood cover covering the tank to access it.

[image] [image]


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MFL

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Posted: 10/08/21 03:20pm Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

Deb and Ed M wrote:

I always put about a quart of straight antifreeze in the black and gray tanks. The theory is that it keeps the seals on the gate valves lubricated and pliable


If you use the cheap stuff that contains ethyl alcohol, your theory may not hold water.


Yup..some antifreeze in the tank is good for lubricating the seals, and to keep any "stuff" on tank bottoms from drying, and turning to concrete.

Also agree, the cheap ethanol based, is not a best choice, and may evaporate, and dry out seals over time.

Jerry





DrewE

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Posted: 10/08/21 04:08pm Link  |  Quote  |  Print  |  Notify Moderator

What leads one to believe the seals on the drain valves need moisturizing and lubrication? And, in any case, what keeps the seals on the output side of the gate wet and lubricated if that were indeed necessary?

There's no harm in having antifreeze there, but it's not at all necessary.





MFL

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Posted: 10/09/21 05:34am Link  |  Quote  |  Print  |  Notify Moderator

DrewE wrote:

What leads one to believe the seals on the drain valves need moisturizing and lubrication? And, in any case, what keeps the seals on the output side of the gate wet and lubricated if that were indeed necessary?

There's no harm in having antifreeze there, but it's not at all necessary.


Since you are asking... and no one said necessary. I will say, from experience, "helpful" in keeping seals from sticking. I have 3 tanks, all enclosed, with cable operated valve gates. I blow lines first, then run about 2 gals of Prestone RV through, catching what is mostly pure AF. I also drain, and catch AF from low points. I will dump about a gal in the black tank, rest in the gray tanks. Come Spring, all valves, especially the black, works very easily, better than during camping season.

I always cover the toilet seal with AF for Winter storage too. It will add longer life too! Necessary?? Maybe not, just good idea.

Thetford, and others, make a valve seal lube, to add to the tanks. Might be worth a try, if you have an issue.

Jerry

K3WE

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Posted: 10/13/21 04:15pm Link  |  Quote  |  Print  |  Notify Moderator

I have put a little pink stuff in the fresh tank to protect the drain line and the line to the pump. It was not the end of the world to rinse it out. But talking 40 gal.

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