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Alex
 
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Default Variable Capacity Tank Airlock

Hello,
I just bought a used 300L Marchisio tank. The tank is missing the
airlock and the spigot. I noticed that St Pats sells this brand of tank and
replacement airlocks and upgraded ball valves instead of the spigot. So can
I use a regular stopper and airlock in the lid or is the metal too thin for
a stopper to stay put? The replacement airlock is only ~$10 but I would
have to mail order it. Which is better the original type spigot the tank
came with or a ball valve? I noticed the ball valves St Pats sells say that
they are not A1 sanitary or something like that, does it matter? I would
like to hear from anyone with experience with these tanks.
-Alex P