Silencing the water pump

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Re: Silencing the water pump

Postby KBS » Tue Dec 25, 2012 6:48 pm

I know very well the rattling of an RV water pump. Don't know what to do about it. However, a few years ago I installed a pump in my Coleman tent trailer (to replace a broken hand pump) that just has a high pitched whir, sort of like a dentist drill, only not nearly as loud. Now, this is not a demand pump. It's just on/off with a switch near the sink. But, it's very quiet. I don't think it would pump enough for a shower, but if all you're doing is filling a coffee pot, it would be grand. Trouble is, I don't recall the brand, but it's a small pump about the size of a 6 oz juice can. I think I paid $35-40 at an RV place.
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Re: Silencing the water pump

Postby hankaye » Tue Dec 25, 2012 9:24 pm

Howdy All;

As a fulltime RV'er I've used some of the foam hose/waterline
insulation and doubled it over then screwed the pump to the deck.
That and some of the more pliable tubing do help.

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Re: Silencing the water pump

Postby Shadow Catcher » Wed Dec 26, 2012 7:44 am

Hank
I tried the foam insulation idea and found it helped a bit, but anything that fastens the pump to a sounding board i.e. sheet of plywood with screws will transmit sound and the bubble mounts worked better. I will be interested in seeing how much replacing the PEX with hose makes and my expectation is that it will help some. Most RV pumps use a diaphragm positive displacement pump which will means, it will pulse but it can run dry with out harm. In looking for a non diaphragm pump I am so far not finding anything.
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Re: Silencing the water pump

Postby GuitarPhotog » Wed Dec 26, 2012 1:15 pm

Shadow Catcher wrote:Hank
I tried the foam insulation idea and found it helped a bit, but anything that fastens the pump to a sounding board i.e. sheet of plywood with screws will transmit sound and the bubble mounts worked better. I will be interested in seeing how much replacing the PEX with hose makes and my expectation is that it will help some. Most RV pumps use a diaphragm positive displacement pump which will means, it will pulse but it can run dry with out harm. In looking for a non diaphragm pump I am so far not finding anything.


Have you looked at these little pumps? Made for water pump service in boats and RVs. Impeller type, so must be located below the supply outflow, but reasonably quiet, and hot water capable.

I've used one in my brewery for almost 20 years and it's still working. BTW draws about 2A at full flow.

http://www.grainger.com/Grainger/DAYTON-Marine-Pump-1P811?Pid=search

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Re: Silencing the water pump

Postby Shadow Catcher » Wed Dec 26, 2012 6:28 pm

GP Interesting pump, I already have two of the SureFlow pumps, One for pumping from lakes and streams and the other already in the trailer.
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Re: Silencing the water pump

Postby bdosborn » Wed Dec 26, 2012 6:44 pm

I have a whisper king pump and its a lot quieter than the bottom of the line shurflo I put in the teardrop. Its not as quiet as I would have hoped but its better. As far as the resistor goes, my pump pulls around 6 amps so that means the resistor would need to be rated at 72 watts. That's not exactly a radio shack type resistor.

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