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02-08-2023, 11:41 AM
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#1
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Senior Member
Join Date: Oct 2019
Location: Arizona
Posts: 213
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Added an Accumulator Tank
Decided to add an accumulator tank to the system to soften the pump hammering. Install went as expected. Tested at home. Seems to make a difference in pressure consistency and pump running timing. We have not run the shower yet.
We have an outing scheduled for the end of Feb. I'll report back after using the setup for 4 or 5 days boondocking.
Cost less than $30 for the tank and a few hours of work.   
__________________
2020 Rockwood 2104S
2019 Ram 2500 Crew 4x4 6.7 cummins
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02-08-2023, 01:10 PM
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#2
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Always Learning
Join Date: Nov 2011
Location: Four Corners, FL
Posts: 21,806
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How big of a tank did you go with?
__________________
Officially a SOB with a 2022 Jayco Precept 36C
Checkout my site for RVing tips, tricks, and info | Was a Fulltime Family for 5 years, now we're part-timing on long trips
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02-08-2023, 01:20 PM
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#3
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Senior Member
Join Date: Jan 2015
Location: Kansas
Posts: 1,271
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Ours was a 2 gallon that we bought at Menard's over in the well water department. I installed one not so much for the hammering (that I cured with flex hose off the pump), but so every little water use event didn't trigger the pump as in night time stool use. I made my own bracket.
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02-08-2023, 01:22 PM
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#4
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Senior Member
Join Date: Dec 2012
Location: Louisville, KY
Posts: 939
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Just an FYI, you probably will have to replace that tank occasionally. I have reverse osmosis in my kitchen at home with a 3 gallon tank and the bladder eventually fails so I have to replace it. I can tell when it's time when I am filling my water bottle and I don't have the same pressure I had before. Not sure if that will be how you will know.
Not a big deal just something to let you know about.
__________________
'18 Ford F250 Lariat Super Crew
'22 Rockwood 2608BS
Previous '17 Grand Design Imagine 2800BH, '13 Rockwood Roo 21SS
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02-08-2023, 04:55 PM
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#5
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Senior Member
Join Date: Oct 2019
Location: Arizona
Posts: 213
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Quote:
Originally Posted by ependydad
How big of a tank did you go with?
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It’s 25oz. About .2 of a gallon. It’s small. About the same size as the filter assembly I removed.
__________________
2020 Rockwood 2104S
2019 Ram 2500 Crew 4x4 6.7 cummins
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02-08-2023, 05:16 PM
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#6
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Senior Member
Join Date: Jun 2016
Posts: 4,569
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Quote:
Originally Posted by dieselguy
Ours was a 2 gallon that we bought at Menard's over in the well water department. I installed one not so much for the hammering (that I cured with flex hose off the pump), but so every little water use event didn't trigger the pump as in night time stool use. I made my own bracket.
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Same here. Not worried about the bladder failing. I have a much larger one at home that I replaced after 30 years because the metal around the base was badly rusted. The 2 gallon size is good for about 4 toilet flushes. Important for us because our pump is directly under the head of our bed.
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Al
I am starting to think, that I will never be old enough--------to know better.
Tolerance will reach such a level that intelligent people will be banned from thinking so as not to offend the imbeciles. Fyodor Mikhailovich Dostoevsky, Russian Novelist
S.E. Mich. Flagstaff 26FKWS / 2022 F-150 3.5 EcoBoost SCrew Propride
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02-08-2023, 08:20 PM
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#7
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Member
Join Date: Oct 2019
Posts: 44
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We installed a 2 gallon tank in our 2018 Sunseeker MBS and really appreciate how it smooths out the pump (less often and runs longer). We turn the pump off at night and have not had a problem running out of water before morning. And the wife really appreciates not being woke up in the night by the pump cycling whenever someone uses the bathroom.
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02-08-2023, 08:48 PM
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#8
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Senior Member
Join Date: Apr 2021
Posts: 872
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I installed a 1-gallon pressure tank in our TT. Sure smooths out the pump hammering and cycling.
Bob
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02-08-2023, 10:47 PM
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#9
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Senior Member
Join Date: May 2019
Posts: 3,155
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I have both a mini accumulator like the OP's and a 2 gallon well tank in my Sunseeker MH. The 2 gallon tank is valved to enable switching it in or out of the system as I desire. For their size, those mini accumulators do a good job of reducing pump cycling. Our pump has the so called bypass feature meant to reduce cycling, but that alone has only a marginal effect.
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2020 Sunseeker 2440DS on 2019 Ford E-450, Trekker cap, Topaz paint
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02-09-2023, 01:52 PM
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#10
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Always Learning
Join Date: Nov 2011
Location: Four Corners, FL
Posts: 21,806
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Other than pump noise, what's the benefit to an accumulator tank?
__________________
Officially a SOB with a 2022 Jayco Precept 36C
Checkout my site for RVing tips, tricks, and info | Was a Fulltime Family for 5 years, now we're part-timing on long trips
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02-09-2023, 02:41 PM
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#11
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 17,132
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Quote:
Originally Posted by ependydad
Other than pump noise, what's the benefit to an accumulator tank?
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It allows you to cycle a faucet or toilet valve several times without the pump running. (dependent on the size of the accumulator tank)
The accumulator "stores" pressure (and water) and allows water flow without cycling the pump until the pressure in the bladder inside the accumulator depletes.
Many folks like them because it keeps a pump (often located under a bed) from running when someone makes a early morning potty break.
They also help control high water pressure when the air pocket in the water heater depletes. It gives the expansion of the heated water somewhere to go instead of adding additional pressure to a water locked system.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped: '18=48 ☼ '19=58 ☼ '20=110 ☼ '21=116 ☼ '22=112 ☼ '23=83
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02-09-2023, 03:11 PM
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#12
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Always Learning
Join Date: Nov 2011
Location: Four Corners, FL
Posts: 21,806
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Quote:
Originally Posted by 5picker
It allows you to cycle a faucet or toilet valve several times without the pump running. (dependent on the size of the accumulator tank)
The accumulator "stores" pressure (and water) and allows water flow without cycling the pump until the pressure in the bladder inside the accumulator depletes.
Many folks like them because it keeps a pump (often located under a bed) from running when someone makes a early morning potty break.
They also help control high water pressure when the air pocket in the water heater depletes. It gives the expansion of the heated water somewhere to go instead of adding additional pressure to a water locked system.
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Thanks for the information. That was helpful.
__________________
Officially a SOB with a 2022 Jayco Precept 36C
Checkout my site for RVing tips, tricks, and info | Was a Fulltime Family for 5 years, now we're part-timing on long trips
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02-09-2023, 03:31 PM
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#13
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Senior Member
Join Date: Apr 2021
Posts: 872
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"what's the benefit to an accumulator tank?"
Nice warm showers! No more cold to hot, cold to hot alternating temperatures for shower water.
Bob
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02-11-2023, 11:14 PM
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#14
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Senior Member
Join Date: Mar 2019
Location: Joliet, IL
Posts: 1,236
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I installed an accumulator during the summer of 2021 in my 5er. Works well as it smooths out the pump when it runs. Believe though it only holds maybe a 1/2 gallon at the most.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Be safe - 
__________________
2018 Cedar Creek 36CK2 (40.5ft)
TST Cap System (Tire Monitoring)
2021 Chevy 3500HD Crew Cab 4X4 DRW Duramax (replaced 2015 Chevy 2500HD Crew Cab 4X4 Duramax)
Curt A25 5th Wheel Hitch (replaced Demco 18K Auto-slide)
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02-12-2023, 06:33 AM
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#15
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Senior Member
Join Date: May 2019
Posts: 3,155
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Quote:
Originally Posted by LittleBill
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I have that model. Per the spec sheet total gas and liquid volume is only 21 ounces. A drawdown volume spec isn’t shown, but it would be less.
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2020 Sunseeker 2440DS on 2019 Ford E-450, Trekker cap, Topaz paint
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