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Old 08-22-2009, 11:28 AM   #1
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Accumalator ?

In a fresh water tank.......exactly what does this do and how does it work ?

What does it help ?

It is listed in some specs sheets as standard on AS and I just wondered if it is good, bad or ugly........?

Robbie R.
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Old 08-22-2009, 11:40 AM   #2
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Accumulator---good!

It is definitely good! The accumulator helps even out the water pressure and minimizes water hammer (that is the force of the water that causes your pipes to vibrate or move).

It is essentially either a tube closed at one end with a diaphragm in it. The tube will have air on the side with no connections and can accumulate water and some air on the other side. When the pressure goes up the diaphragm moves and compresses the air. This causes the diaphragm to continue to exert pressure against the water column. That will reduce the surging action of a pump. If you are on a private water supply well at home, your pressure tank does the same thing while acting as a reservoir. The other types I have heard of consist of the same thing with a bladder rather than a diaphragm. Basically these are shock absorbers for the water supply.
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Old 08-22-2009, 12:18 PM   #3
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Also keeps the water pump from coming on every time you open a faucet
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Old 08-22-2009, 02:57 PM   #4
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When you are sleeping right above the water pressure pump (water coming from your tank - not the water hose from city water) and someone turns the water on in the bathroom in the middle of the night - the chance of the water pump coming on and disturbing the person sleelping. Of course I am assuming that the person in the bathroom is not taking a shower. Water that is in the accumulator tank will be used before the pump needs to turn on to bring more water to you. A more peaceful life.
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Old 08-22-2009, 03:10 PM   #5
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I recently had to decide between installing an accumulator or Shurflo "Smartpump" in our 1970 Globetrotter. Shurflo stipulates you shouldn't use an accumulator with this model.

Had I to do it over, I'd install a less expensive Shurflo with an acumulator.

The "Smartpump" isn't smart enough to pump just what's needed. Instead, it ramps all the way up to its max before turning off. A very expensive version of the traits we don't like in their lower end pumps.
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Old 08-22-2009, 05:01 PM   #6
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Would there be an accumulator in the older Airstreams that have the air pressurized water tank?

Carol
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Old 08-22-2009, 05:56 PM   #7
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Would there be an accumulator in the older Airstreams that have the air pressurized water tank?

Carol
Yes and no. You don't need an accumulator. The pressure tank acts like a large accumulator so another one would be redundant.
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Old 08-22-2009, 07:22 PM   #8
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Thanks Mark.
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