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Thread: Draining Tank Lots Sediment!

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  1. #1
    DIY Senior Member molo's Avatar
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    Default Draining Tank Lots Sediment!

    Hello all,

    I am in an area where there are loads of minerals in the Water. Hot-water tanks are always getting filled with sediment. I have a situation where I need to drain a hot-water tank that I know is filled with lots of sediment. What is the best way to do this?

    Thanks in Advance for any help,
    Molo

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Default drain

    1. Replace the drain valve with a ball valve and hose adapter.
    2. Replace the tank instead of wasting a lot of time flushing it.

  3. #3

    Default

    1 turn off power
    2 turn off water
    3 open a hot water at sink to relive pressure
    4 close hot water at sink
    5pull the drain valve if it is plastic then have fun with the destruction but donít mess up the threads
    6 use a long screwdriver or something in the drain hole and use it to break up the deposits
    7 put your water hose on it
    8 turn the water on
    9 go get a new straight ball valve and hose fitting for it
    10 turn the water off drain the tank (turn on a sink then when empty turn off)
    11 turn the water back on till you donít see any nasty stuff coming out of the hose.
    12 turn water off
    13 put on new ball valve and close
    14 water on and open sink to fill tank
    15 when full (water coming out of the sink) turn off the sink
    16 turn the power back on to the heater


    Do this once a month but after the first time you donít need to remove the ball valve. If it is real bad then you can pull and replace the lower element. Use something to break up what you can whale your in there (a bigger hole).

  4. #4
    DIY Senior Member molo's Avatar
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    Default The list

    Thanks for the help!

    Do I do all that in the order you listed? I'm wondering about what to do if I take the plastic shut-off out, start clearing the sediment, and the water starts pouring out of the tank? Should I have the ball valve with hose connection ready to thread into the tank? I need to avoid a flood.

    Thaks in Advance,
    Molo

  5. #5
    DIY scratch-pad engineer leejosepho's Avatar
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    Default

    Quote Originally Posted by molo
    I'm wondering about what to do if I take the plastic shut-off out, start clearing the sediment, and the water starts pouring out of the tank? Should I have the ball valve with hose connection ready to thread into the tank? I need to avoid a flood.
    Does anything at all come out of the drain valve now?

    If so, and even if only a trickle, you might first shut off your water supply and let the system pressure run down by pushing what it can out of the tank ... then have your ball valve with a hose barb in it and a drain hose nearby so you can next remove the plastic valve and install the ball valve (hand-tight for now) ... then open the ball valve and poke through it until a little more of whatever comes out ... then stick the hose on the barb (off and back on while poking, if necessary) and let the tank finish draining. At that point, you can remove the ball valve and clear a little more around/inside the hole.

    If nothing at all comes out now, you might first shut off your water supply and release the system pressure at a cold faucet somewhere (and leave it open) ... then have your ball valve with a hose barb in it and a drain hose ready and continue on with the above ... and of course, turn your water heater off before doing anything else.

  6. #6
    DIY Senior Member molo's Avatar
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    Default

    Thanks Lee,

    It still seems like it will be next to impossible to avoid a mess. Sound right? or is there a clean way of doing this so that I don't ruin the carpet?

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