Re: [SilverStreak] WATER TANKS

[Marian & Hounds <vistadel@xxxxxxxxxxxxx>]

Celesti,

Below are some bits I saved re: water tanks - past posts of this 
list.............    Hoping they may be of help.

Marian


#3
  If there's nothing wrong with the stainless tank, it can be used with a
demand pump. Just splice the new demand pump into the water line that
comes out of the bottom of the tank. There will have to be a vent
established. The old air line from the compressor can be rerouted up 
well
above the height of the filler pipe on the side of the trailer. Or, the
air line connection to the top of the tank can be plugged and the rubber
seal on the outside filler cap gapped to let air past it.
                                  
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#2
If there's any way you can salvage the stainless tank I would do so.
I've had both over time and too me the plastic tanks ALWAYS taste bad.  
You
can use a pump with your tank.  You might try to flush and drain it a 
few
times to see if you can get rid of the rust.  my 77 has a stainless tank
under the bed.  Unless the previous owners changed out the stainless to 
a
plain steel tank yours should be stainless too.
                                   
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#1
"Glass lined" is a coating of porcelain enamel that is sprayed on the
inside of the steel tank while it is heated orange-red. The powdered
glass melts on the inside of the tank, providing a watertight coating.
This is the same process as is used in water heaters.

Unfortunately as the years go by tiny defects in the coating, especially
around fittings, permit corrosion to get under the porcelain, causing
rust. It's not as bad as in a water heater as only cold water is in the
tank, and in most of our RVs the tank is empty most of the time. So
instead of beginning to rust after 5 or so years like a water heater it
is 20 or more years before significant rusting takes place.
Once the tank begins rusting it will be only a few years until it rusts
through in a spot. It can't be stopped by any practical means as the
sealers that will work are not what you would want your drinking water
exposed to.

An anode rod as is used in water heaters would help, but I don't think
these fresh water tanks have one.