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  1. #1
    Left The Driveway
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    Size of drain plug

    What is the drain pug size on a Dometic WH-6 GEA hot water heater in a Grand Design Imagine XLS 22 MLE

    Thanks

  2. #2
    Site Sponsor Tigger1's Avatar
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    Our WH is Dometic GC6AA 10E and the white plastic drain plug is 15/16”
    2010 Tundra SR5 DC 5.7L 4x4
    2020 Imagine XLS 22MLE
    Andersen WDH
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  3. #3
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    Quote Originally Posted by Larry M View Post
    What is the drain pug size on a Dometic WH-6 GEA hot water heater in a Grand Design Imagine XLS 22 MLE

    Thanks
    I have the perfect replacement part for that itís like two dollars on Amazon Iíll look it up and post a link


    Sent from my iPhone using Tapatalk

  4. #4
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    Zurn QTC3FQP 1/2" Cap, 1 piece https://www.amazon.com/dp/B004M95XMU...ing=UTF8&psc=1

    It looks like itís out of stock but I believe they use that for underground irrigation Terminations


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  5. #5
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    It's a standard pipe thread.Take it out and match it at HD.
    2010 Jayco 26(SOLD)
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    2021 Grand Design 268BH
    2013 Ford F250 XLT, 6.2L Gas

  6. #6
    Paid my dues 😁 FT4NOW's Avatar
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    Most likely 1/2" NPT, i replaced the drain plug on mine, the plastic one that came with it was leaking from day 1, got a metal one from Lowes, good to go now.

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    2021 Reflection 311BHS
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  7. #7
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    Quote Originally Posted by FT4NOW View Post
    Most likely 1/2" NPT, i replaced the drain plug on mine, the plastic one that came with it was leaking from day 1, got a metal one from Lowes, good to go now.

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    I thought the reason it was plastic was to avoid galvanic corrosion and seizing the plug. (?)
    Douglas & Christine
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  8. #8
    Paid my dues 😁 FT4NOW's Avatar
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    Quote Originally Posted by Cdburgerjr View Post
    I thought the reason it was plastic was to avoid galvanic corrosion and seizing the plug. (?)
    I had thought about that, but didnt really have a choice at the time since the plastic one was leaking and I couldn't find a plastic replacement. It happened at the start of a day trip that my wife is on right now with the camper. Now that you bring it up, its probably a good idea to find a better version of the original plug. I only hope that the next plastic one doesnt leak as well.

    I've seen plenty of people mount brass or bronze valves to the drain plug as a drain valve. I wonder if those have become galvanized over time or if it's really not an issue.

    Now that I think about it, our water heater is a drain cap, not a plug (unless I'm losing my mind, I'll have to ask my wife since she has the camper with her). Looking at replacements online, all the drain plugs are plugs, not caps.

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    Last edited by FT4NOW; 06-02-2021 at 04:40 AM.
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  9. #9
    Site Sponsor Tigger1's Avatar
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    My bad, I gave the O.D. upthread.

    It’s 1/2”. I just dug through some things the dealer gave me during our PDI and included was a two-pack of 91857 SVC Drain Plugs.
    2010 Tundra SR5 DC 5.7L 4x4
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  10. #10
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    Quote Originally Posted by Tigger1 View Post
    My bad, I gave the O.D. upthread.

    Itís 1/2Ē. I just dug through some things the dealer gave me during our PDI and included was a two-pack of 91857 SVC Drain Plugs.
    Lucky you. I only had the one. I ended up putting a 1/4 turn faucet outlet on mine. The plastic one leaked so bad I was losing about a gallon of hot water an hour. Yes, there is the metallurgical concern, but at this point that is all I could do. I knew I didn't want to put another cap on it, hence the faucet.

    For those who might be interested, I wrote up a post on what I did. Once I get to my computer, I'll find it and link it here.

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    EDIT: Here is the link to my mod: https://www.mygrandrv.com/forum/show...598#post358598
    Last edited by MoonShadow_1911; 06-02-2021 at 06:28 AM.
    Mark & Mary. Currently hailing from New Mexico. Hopefully full timing in late 2022.
    Current camper: Purchased a 2021 DG Reflection 320MKS!
    Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel

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