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Old 04-21-2021, 01:02 PM   #1
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Brand: Thor Motor Coach
Model: ACE
State: Virginia
Posts: 9
THOR #19875
Potable water pump loud

My water pump has always been loud. Are there any resilient mounts available for some sound isolation?

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Old 04-21-2021, 02:11 PM   #2
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,129
THOR #7035
The pump should have small rubber isolation mounts where it is screwed to the base. Some people have remounted the entire pump on a rubber pad.

Many times the sound problem comes through the attached water lines and there is a "silencing" kit you can install to help with that:

https://www.amazon.com/SHURFLO-94-59.../dp/B000WN5F96
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Old 04-21-2021, 02:18 PM   #3
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Brand: Thor Motor Coach
Model: '17-Vegas 24.1
State: California
Posts: 2,222
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What 16ACE27 said...

There’s a number of ways to quiet noisy water pump.

1) look at pump while it’s running to see if hoses are knocking against any surfaces

2) add an small accumulator tank. It will make the pump run less, thus reducing noise
Seaflo Accumulator Tank - $35

3) water pump “silencer kit”. Although not needed if you can quiet existing hoses
Camco Silencer Kit - $24

4) Finally, rebuild pump with new diaphragm (parts are available on-line for half the price of a new pump) or change out with a whole new pump ($50-100 depending on brand/style)
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Old 04-22-2021, 12:07 AM   #4
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Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,883
THOR #6826
What they said. But my noise was actually caused by the line going to the bathroom faucet under the cabinet. Zip tied the two lines together so they couldn’t move easily. Maybe my case was unique but it worked for me.
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Old 04-22-2021, 02:52 AM   #5
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Brand: Thor Motor Coach
Model: Damon Daybreak
State: New Mexico
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THOR #19133
I actually had to remove my fresh water tank, as the hot and cold pex ran the width of the RV, beside the tank, without any support.
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