water pressure flutter

drpprmt
drpprmt Member Posts: 117
in Heating/Plumbing & Winterizing
When using water pump I have considerable pressure flutter on cold water.  Not so much with hot.  Haven't had this on any other RV's.  Normal, or do I add this to my warranty list?

Comments

  • ericnliz
    ericnliz Member Posts: 4,437
    Can you explain "flutter" a little more? Sputtering, or pressure variation? Thanks
    2016 T@B MAX S-aka: WolfT@B
    TV: 2006 Chevy Avalanche LT Z71 aka: WhiteWolf, or 1972 Chevy Custom10 P/U aka: SnarlingWolf
    Spokane, Wa.
    Eric aka: Lone Wolf  


  • drpprmt
    drpprmt Member Posts: 117
    sputtering.  Tied to the sound of the water pump.
  • ericnliz
    ericnliz Member Posts: 4,437
    Mine does the same thing when you first turn it on. I turn the pressure down a little using the sink valve & it seems to calm down. I'm thinking it's related to air in the lines from the way it acts.
    2016 T@B MAX S-aka: WolfT@B
    TV: 2006 Chevy Avalanche LT Z71 aka: WhiteWolf, or 1972 Chevy Custom10 P/U aka: SnarlingWolf
    Spokane, Wa.
    Eric aka: Lone Wolf  


  • ScottG
    ScottG Administrator Posts: 5,674
    Mine does this, though it's more a pressure variation than an actual sputtering. I suspect the long run to the Alde combined with the Alde's 2-3 gallon reservoir helps to smooth out the effect in the hot water supply. I've always considered it normal. 

    Air trapped in the lines will make the condition more notable, even to the point of sputtering. 
    2015 T@B Max S (320)
    2015 Nissan Frontier SV V6 4x4
  • Estancio
    Estancio Member Posts: 243
    Mine's always been the same. Fluttering when using the water pump. I've been contemplating changing the size of the pipe entering the faucet to see if that makes any difference.
    Stancil Campbell
    2011 T@B
    Rockingham, NC

  • rfuss928
    rfuss928 Member Posts: 1,181
    Several years ago I added an accumulator to the water line out of the water pump.  It eliminates the pulsing or sputtering flow and even reduces how much the pump runs at low flow.
    The entire water system in our DM CS is very low volume with only about two feet of tubing total so the pulsations were quite evident before the added accumulator.  It is a nice refinement that goes unnoticed until you experience another system without it.


    http://www.campingworld.com/shopping/item/shurflo-accumulator-tank/2290&utm_source=google&utm_medium=cpc&scid=scplp2290&sc_intid=2290?utm_campaign=SC_Shopping_High&affiliateid=6313&gclid=EAIaIQobChMIhomrxKqx1gIVAkCGCh2KSgMVEAQYBSABEgJdTvD_BwE

  • ScottG
    ScottG Administrator Posts: 5,674
    Regardless, a sink with pulsing water pressure still beats the heck out of a plastic jug perched on the edge of your picnic table!  ;-)
    2015 T@B Max S (320)
    2015 Nissan Frontier SV V6 4x4
  • ericnliz
    ericnliz Member Posts: 4,437
    @ScottG, 'Ya mean the one that falls off when you're not lookin', and punches a hole in it??? It usually falls right on the corner of the bench punching a nice un-repairable hole in it to boot! (don't ask me how I know about these things!) =)
    2016 T@B MAX S-aka: WolfT@B
    TV: 2006 Chevy Avalanche LT Z71 aka: WhiteWolf, or 1972 Chevy Custom10 P/U aka: SnarlingWolf
    Spokane, Wa.
    Eric aka: Lone Wolf  


  • ScottG
    ScottG Administrator Posts: 5,674
    Yep...that one!
    2015 T@B Max S (320)
    2015 Nissan Frontier SV V6 4x4
  • rfuss928
    rfuss928 Member Posts: 1,181
    edited September 2017
    Virtually 100% of my CS water plumbing is visible in these photos. 
    You can see there was a very convenient place to add the accumulator in the loop of hose on the pumps output.  Adding it did not even effect storage space under the sink.  It was more a because I could project than a need. 
    It does help conserve water because it is easy to set a very low flow when washing.  The pump cycles briefly to recharge the accumulator then is silent while you use the stored water pressure.  Maybe even saves some 12v power!?

    Before


    With Accumulator


    Have Fun!!

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