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Old 07-19-2019, 07:33 PM   #1
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Water pumps

I don't have much experience with motor homes larger than a class C and I got to thinking " that can be dangerous" what kind of water pumps do the high end 5th wheels and class A's use? Is there anything on the market that is quieter than the Diaphragm pump that all of the RV's I've ever been around. Thanks
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Old 07-19-2019, 08:36 PM   #2
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Quote:
Originally Posted by Rex n Sheryl View Post
I don't have much experience with motor homes larger than a class C and I got to thinking " that can be dangerous" what kind of water pumps do the high end 5th wheels and class A's use? Is there anything on the market that is quieter than the Diaphragm pump that all of the RV's I've ever been around. Thanks


I removed the hard line output line and replaced it with flexible rubber hose. It quieter the pump noise down dramatically, then put water pipe insulation in some key spots. Itís silent now
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Old 07-19-2019, 08:37 PM   #3
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Glad to have you join us here in the forums.

Yes there are some different pumps available , and at the moment I can't remember the description of them .

Now I have a search to go no for the rest of the evening.

Diaphragm pumps are preferred because the can run dry without damage.
Although, most times the diaphragm pump noise can be helped by proper mounting and flex hoses connecting it to the rest of the RV water supply.
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Old 07-20-2019, 07:15 AM   #4
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Higher end Rvs typically use the Aquatec variable speed pumps. They are quieter and have a higher gpm rating that the ones used in lower-priced rigs.

https://www.amazon.com/Motorhome-Aqu.../dp/B007HRPYLY

Shurflo makes variable speed pumps too, but most people feel the Remco Aquatec is a better grade of product.
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Old 07-20-2019, 07:15 AM   #5
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Some RVers install an accumulator after the water pump to reduce the need for the water pump to activate each & every time... https://www.rvworldstore.co.nz/guide...do-i-need-one/
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Old 07-20-2019, 09:40 AM   #6
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

I would go with Gary on that one! Have fun and keep her between the ditches!

Good luck, happy trails, and God bless!
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Old 07-20-2019, 09:49 AM   #7
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How its mounted and what it is mounted to is very important. Loosely screwed to a 1/8 board will produce a lot of noise. Screwed properly to a 3/4 inch thick piece of sub-floor particle board will be much quieter.
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Old 07-20-2019, 09:59 AM   #8
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I mounted our pump on 1" cork board and put on flex lines from HD. Wrapped some lines with the foam insulation tubes.

Pretty quiet now. Didn't cost much to do it either.
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Old 07-20-2019, 10:27 AM   #9
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X2 with above points. Some things I've done:

1. Replaced the OEM pump with a Shurflo 4148-153-E75, quieter & 4 gpm
2. Used flexible hoses for input and output lines
3. Rebuilt the mounting system. Have a 1 1/4 layer dense foam with a piece of 1/2 plywood, between pump and foam. The pump only screws into the plywood and the whole assembly is screwed to a solid surface, like the floor.
4. Installed a 2 gallon pressure tank. Provides up to 2 gallons of water with no need for the pump to run. Great for night time needs.

Works for me on both our 5th and MH.
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Old 07-20-2019, 03:39 PM   #10
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Quote:
Originally Posted by Rex n Sheryl View Post
I don't have much experience with motor homes larger than a class C and I got to thinking " that can be dangerous" what kind of water pumps do the high end 5th wheels and class A's use? Is there anything on the market that is quieter than the Diaphragm pump that all of the RV's I've ever been around. Thanks
From a pop-up to a Prevost, they use a diaphragm pump.
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Old 07-20-2019, 06:46 PM   #11
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I installed variable speed water pumps in two Safari Treks. MUCH quieter and well worth the additional cost.

Quote:
Originally Posted by Gary RVRoamer View Post
Higher end Rvs typically use the Aquatec variable speed pumps. They are quieter and have a higher gpm rating that the ones used in lower-priced rigs.

https://www.amazon.com/Motorhome-Aqu.../dp/B007HRPYLY

Shurflo makes variable speed pumps too, but most people feel the Remco Aquatec is a better grade of product.
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Old 07-20-2019, 06:59 PM   #12
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We added an accumulator tank and flexible hoses. Quieter and does not cycle as often.
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Old 07-28-2019, 12:07 PM   #13
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How do you know when a water pump needs to be replaced? My coach has a REMCO 3.4 GPM that is noisy, just recently it tends to cycle on when water is not being used but it pumps with plenty of pressure; any susggestions.
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Old 07-29-2019, 08:14 AM   #14
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I may be weird but I like to be able to hear the pump.It lets me know if a faucet was not fully closed or the tank is empty.Cycling in the middle of the night means look for a leak or drippy faucet.
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