Good Sam Club Open Roads Forum: Tech Issues: By pass water pump sound
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 > By pass water pump sound

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EMD360

Arvada, CO

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Posted: 04/21/21 10:36am Link  |  Quote  |  Print  |  Notify Moderator

The water pump in our newer RV is called a by pass pump. I’m not sure how it’s different from our shur-flo in the old RV but it definitely sounds different. Instead of a low constant rumble, it is a two stage rumble grr-uh grr-uh but when letting the water run which we seldom do it levels out. Is this sound normal for a bypass pump?


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Old-Biscuit

Verde Valley

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Posted: 04/21/21 10:59am Link  |  Quote  |  Print  |  Notify Moderator

YEP>>>>>>

Bypass Pump
Has a bypass valve that starts opening at 40# to help level out the pump flow
**Low demand the old pump would start/stop cycle
**Bypass and low demand pump runs but bypass cycling to maintain 'steady' flow w/o the pump cycling on/off


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EMD360

Arvada, CO

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Posted: 04/21/21 01:47pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks! I had a 1 gallon pressure tank on our old pump. It would help keep the pump from coming on especially at night for a flush or two. I’m thinking of putting one on this system as well. I’m not used to the pump coming on immediately when using water. The instructions say because of the bypass feature an accumulator is not needed. But I think that’s because it handles low demand better. I’m glad the sound is normal though.

way2roll

Wilmington NC

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Posted: 04/21/21 02:07pm Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

YEP>>>>>>

Bypass Pump
Has a bypass valve that starts opening at 40# to help level out the pump flow
**Low demand the old pump would start/stop cycle
**Bypass and low demand pump runs but bypass cycling to maintain 'steady' flow w/o the pump cycling on/off


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Jim2007

Greeley, Colorado

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Posted: 04/22/21 10:20am Link  |  Quote  |  Print  |  Notify Moderator

Hey Old Biscuit.... thanks for the education . .. Jim2007


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