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Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns, & Hot Liquor Tanks > plugging a hole in MLT
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Old 06-09-2009, 11:07 PM   #1
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Default plugging a hole in MLT

when i built my cooler MLT, i was all gung ho about slapping as much hardware as possible into it and now regret putting a sight glass on. when i was taking it apart today to clean, i'm certain I discovered a new species of something living within the brass nipple and elbow.

i figure the best way to plug it is with an appropriately sized stopper, but i'm nervous about knocking it out when i stir the mash... would it be OK to epoxy it in or something? i'm sure epoxy isn't the best thing to use, does anyone have any ideas on how to plug that hole up (aside from getting a new cooler)?

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Old 06-10-2009, 01:21 AM   #2
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The trick is getting an epoxy that will stick to the plastic.

Putting a cap on the inside will seal the hole.

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Old 06-10-2009, 01:51 AM   #3
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as in a cap on the brass fitting?

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Old 06-10-2009, 02:00 AM   #4
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Quote:
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as in a cap on the brass fitting?
You need a cap or plug to fill the hole on the fitting inside the cooler.

If it ends in a coupler, then you need a plug.

If it has a nipple with a nut of some sort then you would use a cap.
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Old 06-10-2009, 03:55 AM   #5
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You can get a gum stopper in there... trust me, you wont knock it out. I have stoppers that hold my thermometers in and my sight glasses and have NEVER knocked them out.

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Old 06-10-2009, 04:37 AM   #6
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If i'm correct this sounds like a coupling welded thru your keg.
If so I would install a stainless plug with teflon on the plug on the inside of the keg and forget about it. later on it might come in handy again save it for a future use if needed.

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Old 06-10-2009, 01:43 PM   #7
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no, sorry, it's an igloo cooler with a weldless fitting. i think i'll try the gum stopper first and if that doesn't work, i'll reinstall the nipple and cap it. thanks.

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Old 06-10-2009, 03:52 PM   #8
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no, sorry, it's an igloo cooler with a weldless fitting. i think i'll try the gum stopper first and if that doesn't work, i'll reinstall the nipple and cap it. thanks.
My gum stoppers have been installed for my thermometer and sight glass... the thermometer ones have been in for about 2 years. Never a problem. Install them from the INside so that the pressure in the vessel actually pushes them INto the hole. IMHO the weldess fittings for coolers are a waste of money when a gum stopper will do the job for less than $1.
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Old 06-10-2009, 06:50 PM   #9
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yeah, i guess i'm just being paranoid. i'll go with the gum stopper until experience tells me differently. thanks for the responses.

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Old 06-10-2009, 07:04 PM   #10
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yeah, i guess i'm just being paranoid. i'll go with the gum stopper until experience tells me differently. thanks for the responses.
Plenty of ppl have taken my advice, never heard of one coming out. I hit mine plenty hard when I am stirring my mash, and it has never even leaked. You will be amazed at the gripping power of the gum stopper!
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