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02-16-2021, 08:00 PM
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#1
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Rivet Master
2021 30' Flying Cloud
2020 25' International
minneapolis
, Minnesota
Join Date: Jun 2020
Posts: 1,468
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Water pump sounds like Tommy gun
What causes the random water pump performance. You use the pump...all is good. You use it the next day and it sounds like a Tommy gun. Very inconsistent. I really don’t know what to expect when I open the faucet valve.
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02-16-2021, 08:35 PM
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#2
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Rivet Master
2020 23' Flying Cloud
2019 22' Sport
Sebastian
, Florida
Join Date: Nov 2019
Posts: 1,235
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The most likely difference from day to day is air in the lines. Turn off the pump and open two faucets (at different elevations, if possible) to get some air in the plumbing, turn them off and try the pump. Your system may be quieter until the air bleeds out.
Some people install an “accumulator”, a section of pipe or a bulb that is always filled with air, to even out the pump discharge pressure. If the lack of air in the lines causes hammering, look into that option. I’ve seen Airforums posts on the subject.
__________________
-Don
(That man in that tiny can)
(Same man, Bigger can)
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02-16-2021, 09:11 PM
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#3
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Rivet Master
2019 27' Globetrotter
McHenry
, Illinois
Join Date: Apr 2018
Posts: 2,202
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Don, you beat me to the post!
Pentair offers a silencing kit and accumulator for the Shurflow pump. In fact, they do not recommend connecting the pump with rigid pipe like Airstream does.
I found our pump was noisy because the pump was tilted on the rubber mounts. I moved the pipes and straightened the pump. While you’re there, snug up the fittings to ensure they’re tight and won’t suck air.
The silencer kit is two flexible lines that isolate the pump from the rigid pipe. The accumulator acts as a reservoir and help with short-cycling of the pump.
There’s also a setting adjustment on the pump head for the turn-on and shut off pressure. The factory turn-on pressure is 30 PSI and off at 55 PSI. The accumulator should be pre-charged to 30 PSI.
Good luck!
__________________
2019 27’ Globetrotter FBT Walnut/Dublin Slate
2018 FC23FB
2019 Ram 2500 6.4 Hemi Laramie Blue Ox 1000#
WBCCI# 10258
RETIRED!
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02-16-2021, 09:12 PM
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#4
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Rivet Master
2022 25' Flying Cloud
NCR
, Ontario
Join Date: Feb 2017
Posts: 3,106
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if you install an “accumulator”, that will minimize the noise
it absorbs the sudden water surge
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02-17-2021, 01:09 AM
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#5
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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These "noisy pump accumulator site:airforums.com" search results should lead to productive discussions on this:
https://www.google.com/search?q=nois...=airforums.com
The accumulator we installed helped a lot, as did better rubber pads under the pump "feet" and sound dampening material in the pump space.
Good luck.
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02-17-2021, 10:00 AM
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#6
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2 Rivet Member
2017 28' Flying Cloud
Newmarket
, Ontario
Join Date: Jul 2016
Posts: 41
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It took me a couple of years to track down all the sources of noise. The silencing kit helped a lot, but the big offenders were the pipes banging on the floor or cabinetry. Install a bunch of cheap Pex talon clamps anywhere the pipe isn't anchored (which is pretty much everywhere) and you'll see a huge improvement.
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02-17-2021, 10:03 AM
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#7
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Site Team
1994 25' Excella
Waukesha
, Wisconsin
Join Date: Sep 2020
Posts: 5,579
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Could you have something which is making contact with the pump or nearby water lines? Perhaps something that should be fastened down has come loose?
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02-17-2021, 02:38 PM
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#8
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Rivet Master
2019 27' Globetrotter
Litchfield Park
, Arizona
Join Date: Jan 2013
Posts: 549
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Another option is to install this product, an Intelligent RV Water Pump Controller:
https://www.irvwpc.com/
We still have some noise after we've towed the trailer until we run water through the faucets and shower, but this device otherwise makes the pump REAL quite. There are times I can't even hear it.
Steve
__________________
Steve Jones
2019 Globetrotter 27 FB
2018 Chevy Silverado 2500 4WD LT
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02-17-2021, 04:08 PM
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#9
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:SPACE A" S/O 11 Air19745
2006 34' Classic S/O
Fort Worth
, Texas
Join Date: Feb 2007
Posts: 1,766
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My pump is so quiet I can not hear it when I turn it on to purge the residual water out when winterizing or any other time for that matter. I installed a Shure Silencing kit for about $25. However, I also installed a HD Remco pump and the are really quiet.
guskmg
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02-17-2021, 04:55 PM
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#10
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Rivet Master
2014 25' Flying Cloud
Cuddebackville
, New York
Join Date: May 2007
Posts: 4,346
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I found the shelf my pump was mounted on became loose. It made a significant increase in noise. A few screws fixed it.
__________________
2014 25' Flying Cloud Rear Twin
2019 Ford Expedition Platinum
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10-11-2022, 07:06 PM
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#11
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1 Rivet Member
2020 27' Flying Cloud
Norcross
, Georgia
Join Date: Feb 2020
Posts: 5
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Was your pump secured by 4 screws? Ours is only mounted by the two front mounts.
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