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Jetstreamer's avatar
Jetstreamer
Explorer
Oct 29, 2020

Water heater check valve

I always winterize by blowing out lines then putting enough propylene glycol in the water tank to properly run enough through my wash machine. I went to bypass the water heater and when I turned the pump on I could still hear something filling in the heater tank....
Quickly realized the check valve was leaking.
Had I not happened to hear that I would have wondered where all my antifreeze went to after completely filling the water heater...
My rig is 15 years old something to think about replacing that check valve....

5 Replies

  • dougrainer's avatar
    dougrainer
    Nomad
    Oct 30, 2020
    Jetstreamer wrote:
    dougrainer wrote:
    If you blow out, why do you not blow out the Washer also?????? What you do is, install a 1/2 gallon of antifreeze in the washer, set the water temp to Warm/Cold. Then when blowing out start a wash cycle. You will hear the 2 water valves blow air after the lines are purged and when the dump cycle activates, the antifreeze will go thru the drain pump. A lot easier. Doug

    Thanks Doug I’ll consider that. I was just following manufacturers instructions.


    I am a RV technician. That is how I winterize washers for almost 30 years. Doug
  • Jetstreamer's avatar
    Jetstreamer
    Explorer
    Oct 30, 2020
    dougrainer wrote:
    If you blow out, why do you not blow out the Washer also?????? What you do is, install a 1/2 gallon of antifreeze in the washer, set the water temp to Warm/Cold. Then when blowing out start a wash cycle. You will hear the 2 water valves blow air after the lines are purged and when the dump cycle activates, the antifreeze will go thru the drain pump. A lot easier. Doug

    Thanks Doug I’ll consider that. I was just following manufacturers instructions.
  • dougrainer's avatar
    dougrainer
    Nomad
    Oct 30, 2020
    If you blow out, why do you not blow out the Washer also?????? What you do is, install a 1/2 gallon of antifreeze in the washer, set the water temp to Warm/Cold. Then when blowing out start a wash cycle. You will hear the 2 water valves blow air after the lines are purged and when the dump cycle activates, the antifreeze will go thru the drain pump. A lot easier. Doug
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Oct 29, 2020
    If you have access/room get RID of that check valve and install a manual shut off valve

    Your water source must be pretty good for that check valve to have not caused issues before

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