Last summer I bought a discontinued close-out "big mouth bubbler 1 gallon
modular keg" (actually more like 1.75 gallon, expandable to 5 gallons) for
$40, but I just opened the box for the first time this week.
There was a flaw in one of the solder joints where the top handles attach:
a tiny weep hole all the way through.
I bought some JB WaterWeld putty (image attached), mixed a small amount
together, pressed a tiny amount across the flaw from inside and outside of
the keg, immediately pressurized the keg (hoping to use the pressure to
force the putty even further into the hole, if possible) before it set. It
seems to have done the trick. It's "drinking water safe" and resists most
chemicals, so I think it will hold up against beer and be safe. I'll use
the finest grit sandpaper I have to make it nice and smooth, especially on
On another note, the instructions for the modular keg say not to exceed 40
psi. No problem! I've tightened the clamps about as much as I dare -- more
than the instructions say it should need -- and about 12 psi is the most I
can get before it starts leaking. I guess we'll charitably call that a
safety feature. 🙄
The only part for this keg I can find currently is the 5-gallon expansion
kit, also on close-out for 70% off. ($24) If I were more confident in the
seals and clamps, I'd buy it while it's available, but I think it'd be good
money after bad in this case.
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