old C02 tanks

[spwz99]

So today i stumbled across four of my original co2 tanks from years ago. My question is can these ever be filled again or do they need hydro'd like nitro tanks. if so, this would cost more than the tank is worth, so are they nothing more than paper weights now?

[OXX]

Well, depends on things. Most importantly, what size tanks? 9/10oz diameter or smaller never needs hydro, so if they are visually ok, then they can be filled.

[spwz99]

all four are twelve ounce tanks. in good to excellent shape.

[Maverick27502]

with CO2 tanks you can get them re-hydro'd..but it would probably be cheaper just to replace them

[Jaan]

People are right that a new 20oz tank is only a little more than a hydro ... but I have three 20oz tanks that are all 92 / 93 and I've always hydro'd them and used them. I like all those dates. I'll use them until I run out of space on the neck lol.

Cut the bottom off the tanks and use them for a windchime, along with a couple of stock barrels and a bottom line ASA for a striker.

[athomas]

Any CO2 tank under 2-1/2 inches in diameter doesn't require a hydro test. This usually includes tanks 12oz and under.

[olinar]

i would definitely either throw them out or hydro first,20 bucks isnt worth takin yours or a pb buddies head off with a tank.

[arg1271]

Similar question over here in the UK. I've got an old L7 with the promag conversion and have a 3.5oz expansion tank doubling as a foregrip . Do these tanks ever need testing?

It's been painted and re-painted a few times, I've taken a lot of the old paint back now and can make out 'aluminium' on the side...don't know if that helps?

[Pneumagger]

expansion chambers are not DOT (or whatever you guys use over there) certified and not subject to testing.

[arg1271]

not sure if I can make out DOT on the tank, makes mine a bit of a grey area, might be DOT hence not legal in the UK now, but also under 0.5 litre and therefore not subject to testing...