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Old 06-01-2018, 08:03 AM   #1
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Join Date: Apr 2009
Location: WI
Posts: 559
Water Flow with Expansion Tank

Water Flow using a 2 gallon pressure tank:
I hate it when the pump runs in the middle of the night when I am up using a small amount of water and then having the noise wake my wife and annoy the neighboring campers.
SO; I installed a 2 gallon Water Worker G5 expansion tank set a 30 psi into the RV plumbing. Now we turn OFF the pump when retiring and we have a 55 second flow of water without needing to run the pump throughout the night.
When using the pump, instead of 2 seconds of flow before the pump starts a 4 second cycle we now have 18-20 seconds of flow followed by a 35 second pump cycle.
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2012 RAM 3500 ST + CHROME
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Old 06-01-2018, 11:46 AM   #2
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Location: PA
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Very creative. Great post.
Mark & Susan
Lehighton, Pennsylvania

'13 Cruiser Patriot 335SS - '13 Ford F150 SCREW - PullRite Superslide - Roadmaster Active Suspension
Member - "Northeast Adventures RV Rally Group" & "Mason-Dixon Bunch"
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Old 06-01-2018, 01:56 PM   #3
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Nice mod Dave. I wish I had more room, I would put in the bigger tank like yours.
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Old 06-01-2018, 05:50 PM   #4
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Looks good. I hate that too.
*2016 CAF25SE Cruiser Aire 5er. *2020 Chevrolet 2500 HD Custom
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Old 06-01-2018, 06:12 PM   #5
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Very nice mod. Thank you for sharing.
Scott & Julie
Northern Wisconsin
2017 Sunset Trail 250RB
2015 F150 Supercrew w/3.5L EcoBoost/Max tow, w/
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Old 06-08-2018, 10:43 AM   #6
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Join Date: Sep 2014
Location: Pennsylvania
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That's a mod that does make a big difference. I've been using an expansion tank since the first popup we had that was equipped with a pump. Now that we have the TT I had enough space to use the larger tank like yours. I also put a foam pad under the pump and padded the water lines near the pump to cut down on vibration. We barely hear the pump run.

John & Cindy
Central Pennsylvania

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