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Old 12-19-2017, 02:24 PM   #1
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Seaflo $40 Accumulator Tank arrived

My $40 accumulator tank arrived today and looks well built with rubber mounts and hose ends. I am also impressed with the free shipping (not prime) that took only 5 days to get here and no tax. Here in BC taking into account for tax, gas, time I would have to find one in a shop for less than $30 to beat this...I don’t think so...not in Canada. There are threads here on the forum about their operation and many on you tube. This style of tank works get at our cabin...I just hope the small size works as good in the trailer. Available on Amazon.ca...

https://www.amazon.ca/Seaflo-SEAFLO-...cumulator+tank
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Old 12-19-2017, 02:50 PM   #2
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My $40 accumulator tank arrived today and looks well built with rubber mounts and hose ends. I am also impressed with the free shipping (not prime) that took only 5 days to get here and no tax. Here in BC taking into account for tax, gas, time I would have to find one in a shop for less than $30 to beat this...I don’t think so...not in Canada. There are threads here on the forum about their operation and many on you tube. This style of tank works get at our cabin...I just hope the small size works as good in the trailer. Available on Amazon.ca...

https://www.amazon.ca/Seaflo-SEAFLO-...cumulator+tank

Thank you, I just bought our trailer a Christmas present.
It's available here too. Or will be on Dec 24th. But luckily the trailer does not keep good track of what day it is.

https://www.amazon.com/Seaflo-SEAFLO...cumulator+Tank
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Old 12-19-2017, 03:31 PM   #3
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Ok, stupid question but what does this do and what benefit does it provide? I've not seen a problem on the forum where this is a solution so just curious. Thanks!
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Old 12-19-2017, 03:56 PM   #4
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Ok, stupid question but what does this do and what benefit does it provide? I've not seen a problem on the forum where this is a solution so just curious. Thanks!
The simple answer is there is no real problem with the water system...this just makes it work in a different way.
There is a rubber diaphragm in the middle of the tank with your drinking water on one side and pressurized air on the other. This air keeps the pressure up so the pump does not need to start right away and generally smooths out pump operation.
2 examples
If you turn on the water at a trickle to fill the ice cube tray the pump will probably go crazy on and off try to supply a steady stream. With the tank in line the pump will come on far less and there will be a steady stream.
At night you can turn off the pump and your good for a few flushes of the toilet. Great to not wake up the grandchild...priceless!
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Old 12-19-2017, 03:58 PM   #5
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I thought accumulator tanks were bigger than that, I mean capacity Wow!
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Old 12-19-2017, 04:00 PM   #6
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Your RV water pump’s job is to keep the pressure stabilized within the water system, so it will cycle on and off whenever you open a faucet or flush the toilet. Water pumps can be noisy, especially in the middle of the night when someone uses the toilet. A water pump accumulator tank will help to hold the water system under pressure, which means the pump won't have to run as often. Over time, the accumulator tank can extend the life of your water pump, because the pump will cycle on and off less often.

You can get accumulators up to 2 gallons, the bigger it is the less the pump runs. Of course they take up more space.

Generally, you get about half the space of the tank for air and the other half is water, so a 1 gallon actually stores about a half gallon of water. I used a 1/2 gallon.
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Old 12-19-2017, 04:07 PM   #7
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I thought accumulator tanks were bigger than that, I mean capacity Wow!
This one is a bit bigger than a water hammer tank and smaller than a water heater expansion tank. I thought about getting a 3/4 gallon expansion tank and fitting it under but this will work fine.
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Old 12-19-2017, 04:25 PM   #8
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Ah...ok got it. So now that I think about it...when I use the shower the water pump goes on/off constantly. And it's not like I'm standing there running water like at home. So I'm thinking this might help with evening out the water pressure for the shower.

Also, Eggscape...is that your jeep? Love it...my dad had one like that and I learned to drive on it. Sure was fun....
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Old 12-19-2017, 04:42 PM   #9
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Post a picture when you have it installed so I can see where it fits! Thanks.
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Old 12-19-2017, 05:02 PM   #10
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Ok, stupid question but what does this do and what benefit does it provide? I've not seen a problem on the forum where this is a solution so just curious. Thanks!
Rick for whatever reason , pump is now also quiet. Pat
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Old 12-19-2017, 05:27 PM   #11
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Being small it can go almost anywhere near your pump. I will be mounting mine on a wall so it drains well for the winter. Other people have put a larger one in that is available from your home improvement stores.
If you put “accumulator” in the search box at the top of the page you will see threads with pictures of other installs...big and small. Also many you tube videos on the subject...just do try to build one.
Below is a picture of an install Jim did years ago.
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Old 12-19-2017, 06:49 PM   #12
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Being small it can go almost anywhere near your pump. I will be mounting mine on a wall so it drains well for the winter. Other people have put a larger one in that is available from your home improvement stores.
...
I put in a larger one (2 gals??) under the bed in my '21.

Perceived advantages: Pump runs quieter, pressure variations are minimized and best of all - a couple of late night flushes for the Old Guy, without waking up other occupants.

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Old 12-19-2017, 09:08 PM   #13
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Alan, is it right to assume that yours would also add an extra 2 gallons to the system’s fresh capacity? That would be a nice side benefit...
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Old 12-19-2017, 09:19 PM   #14
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A 2 gallon hold more like 1 gallon of water, but yes, it would be in addition to whatever you had before you added the tank, and only when pressurized.
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Old 12-20-2017, 09:00 AM   #15
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I put in a larger one (2 gals??) under the bed in my '21.

Perceived advantages: Pump runs quieter, pressure variations are minimized and best of all - a couple of late night flushes for the Old Guy, without waking up other occupants.

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Alan: Is this piped in on it's own branch which would allow for draining and isolation when winterizing with antifreeze? The Sea Flo is an inline arrangement which looks like it will become filled with antifreeze if winterizing with that method. Just curious. Thanks.
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Old 12-20-2017, 10:37 PM   #16
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Alan: Is this piped in on it's own branch which would allow for draining and isolation when winterizing with antifreeze? The Sea Flo is an inline arrangement which looks like it will become filled with antifreeze if winterizing with that method. Just curious. Thanks.
Capacity question: Will it add to the capacity?

The accumulator is on its own branch - on a "T" from the pressure pump. So when the pump is cycled and reaches maximum pressure then the accumulator holds roughly half its capacity as water and half as air.

Yeah, maybe an extra gallon, but my beer adds more than that.

If I run antifreeze in to the '21's water tank and then run the pressure pump then some antifreeze will flow into the accumulator. But in practice I don't really worry about freeze up in the accumulator. Its all flexible inside and the incoming line is vinyl and therefore not likely to split if frozen. Freeze damage is likely to happen in rigid confined spaces like the insides of valves, pumps and rigid lines. Even the pex pipes claim they won't be damaged by freezing. (Not that I want to test that theory.) And quite a number of unfortunate campers have discovered that the toilet valves are quite prone to freeze damage.

Bottom line for me - the extra bit of water that flows without running the pump is my main benifit. (And the quiet of the midnight flush is my wife's).

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Old 12-20-2017, 11:16 PM   #17
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I don't flush after lights out.
I just open the trap and let gravity take care of business ( #1 ).
So, I have no need to turn on the pump, or replace it, or add an accumulator.
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Old 12-20-2017, 11:47 PM   #18
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I don't flush after lights out.
I just open the trap and let gravity take care of business ( #1 ).
So, I have no need to turn on the pump, or replace it, or add an accumulator.
I tried that until the boss found out.

"FLUSH"!!!
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Old 12-21-2017, 12:14 AM   #19
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I have to know this.
How did she find out?
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Old 12-21-2017, 09:19 AM   #20
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I have to know this.
How did she find out?
The nose knows...
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