water runs slowly when under cabinet knobs are turned off going to the bathroom faucet?

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  • 4 days ago

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  • Droopy
    Lv 5
    2 months ago

    Turn you main water valve off.  and replace you sinks service valve while your doing the repair your doing.

    There easy to replace even if can't solder or have pex tool you can easily use shark bite valves. 

  • 2 months ago

    the valves those knobs control no longer close fully.  they need replacing.  if you are the owner, this is on your hook to do -- handyman or plumber, your call

  • Edwena
    Lv 7
    2 months ago

    You seem to be saying that the shut off valves under the bathroom lavatory do not shut completely.   All I can say is that that is not supposed to happen.  If it is a globe type valve, a reason could be the valves were closed so tightly that the compression damaged the elastomer seats so that they now leak.  If it is a ball valve, the cause could be that the valves were not fully open. That would put a lot of turbulence on the elastomer seats , and after years of flowing water, could damage the seats sufficiently to not seal.  The only thing to do is replace the valves.  They should be screwed on. You will have to turn off the next set of upstream valves which is probably at your water heater.  The next one after that is at the water meter. You will have to shut off both the hot and cold water lines.  Don't unscrew a joint inside the wall and create a leak.

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  • 2 months ago

    yea those wall valves dont work when they get old. If you need a shutoff use the main water shutoff.

  • 2 months ago

    The shutoffs are likely old and not sealing properly.  Turn them tighter if you feel you can do so without breaking them.  Otherwise, you need to go back to the next shutoff which is likely where the water comes in the house to stop the flow.  Then decide if you want to replace the under sink shutoffs at that time as well.  

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