What is the quietest fresh water pump? - SailNet Community
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post #1 of 16 Old 02-23-2013 Thread Starter
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What is the quietest fresh water pump?

Hi I have an older Shurflo diaphragm water pump that is pretty noisy. Which pumps do you find least noisy? Can the pump be enclosed into something to make less noise? I read somewhere that the reason for the noise may be due to over-tightening the mounting screws/bolts. My pump is hooked onto accumulator/bladder tank but the pressure does not last very long and pump starts after few seconds of water running on the tap. I am not too fussy about the accumulator/bladder tank so if a quieter pump is available without the need for automatic shut off I'd go for it. What others use?
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post #2 of 16 Old 02-23-2013
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Re: What is the quietest fresh water pump?

Sounds like you need to get a bicycle pump and reinflate the bladder.. if the pump's coming on more than every 3 or 4 tap openings (exc for filling a sink, etc) then the bladder pressure is too low.

It should say on the tank what the pressure should be.. they make some nice compact bicycle pumps with built in gauges nowadays..

All these pumps make noise.. no reason why you can't mask the noise with an insulated enclosure, but a properly setup accumulator really quiets things down since the pump runs far less often.
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post #3 of 16 Old 02-23-2013
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Re: What is the quietest fresh water pump?

This one?

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post #4 of 16 Old 02-23-2013
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Re: What is the quietest fresh water pump?

Or this

Whale Marine - Products

I agree with Faster, if your pump is coming on that often the bladder isn't working properly. Most of the noise from a Shurflo is vibration from whatever it's mounted to, try to isolate the pump and allow the rubber feet to absorb the motion.
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post #5 of 16 Old 02-24-2013
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Re: What is the quietest fresh water pump?

I want to hear the pump, so I know if it running when it shouldn't be.


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post #6 of 16 Old 02-24-2013
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Re: What is the quietest fresh water pump?

shur flo makes noisey and quiet pumps. i was fortunate that this bot came with a quiet one. i lived on a boat with a noisey pump long ago--only good thing about noisey pump is that you know when you leave it on....

and if your pump is always making a few bumps, try seeking the leaks--could be a hose clamp, could be a pinhole in a hose..could be anything..if the water comes on and doesnt flow nicely, there could be a nice lil air bubble in your pump....i had one of those after running the tank out of water...didnt prime it correctly and had a nice fat air bubble..fixed it and perfection.


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Last edited by zeehag; 02-24-2013 at 09:28 AM.
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post #7 of 16 Old 02-24-2013
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Re: What is the quietest fresh water pump?

If noise if coming from mounting ,try mounting pump on a separate panel and rubber mount that .
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post #8 of 16 Old 02-25-2013
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Re: What is the quietest fresh water pump?

Quote:
Originally Posted by Capt Len View Post
If noise if coming from mounting ,try mounting pump on a separate panel and rubber mount that .

Actually, you can mount the pump on two lengths of 2" (non-wire reinforced) hose with the ends cut off on the diagonal and screwed/bolted to the sole. The flexibility of the hose will substantially reduce the "pounding" noise of the pump. One just needs ensure that the waterlines have enough slack on either side of the pump to flex without damage to the connections. In addition to checking the accumulator bladder, you might also check to ensure that your pressure switch is operating properly and not activating for an unnecessarily high pressure.

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post #9 of 16 Old 02-25-2013
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Re: What is the quietest fresh water pump?

I'd rather hear the thump than find 100 gallons of water consumed by a child brushing his/her teeth.

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post #10 of 16 Old 02-25-2013
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Re: What is the quietest fresh water pump?

It may just be the age of the pump. I replaced ours last year when the old one died and couldn't believe how much quieter it was.

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