1 kg co2 bottle

[chris knee]

hi guys, i need one of these or something similar for a buffertank in a feather,

[maddox10]

What dimensions do you need? As a 1 kg Bottle has a volume of approx 1.5 liter.

[chris knee]

my main co2 bottle is a 1 kg and i was thinking of putting the same in for a buffer, unless you no a better alternative, pretty new to this so any help would be good

[chris knee]

would this be any good to use
http://www.ebay.co.uk/itm/MIG-WELDING-G ... 43affccd0e

[dmac]

I have various sizes of bottles, you dont say if this is LP or FP, where abouts are you located.

DaveMac

[maddox10]

my main co2 bottle is a 1 kg and i was thinking of putting the same in for a buffer, unless you no a better alternative, pretty new to this so any help would be good

I have a 1.1 kg bottle in my supply, and I can make buffertanks to size, so I need dimensions.

[Eventorizon]

I have just acquired a 1Kg powder extinguisher to turn into a LP or 6bar buffer tank. What can you use a main pressure tank? We have a soda stream bottle and something that looks similar but has a wider diameter but is shorter, both seem to be rated to 10 bar.

[Liftoff]

What can you use a main pressure tank?

Not sure if I understood this well - If you're talking Co2, then a main tank should be capable of much more than 10bar, its more likely to be 55bar at room temp!
I use a paintball tank for that - its properly rated to contain the pressure and come in different sizes from 9oz up to 20oz.

In my opinion 10bar rating is not even good for a buffer tank. You'll be working at the limit of the capacity of the tank - something I'd try to avoid.

6bar for an LP system is too low I think - to use that pressure you have to go for a large tank. Its better to increase the pressure in the buffer up to say 10-11 bar and go with a more compact buffer.

[Eventorizon]

Well this is what is stamped on the side of the tank...

5/8-18UNF CN(HS) 664963 AA6061
3.4MM 0.56KG 0.47L PH250BAR 0.35Kg CO2
TARE 0.67KG [Pi Symbol]0685-40C 82 2007/03

I guess that means it can take up to 250 Bar and the rest is thread size, weight, volume and material.

The ex-fire-extinguisher is in the green at 6 bar but the dial went up to 12bar; though that is in the red.

Cant find the soda stream bottle atm, will have to go hunting.

[Liftoff]

This looks like a 12oz paint ball bottle to me. The markings are similar to what I've got.
If you're using as a main tank to fill it with Co2 forget the 270bar pressure rating - fill it by its specified weight, that is 0.35Kg Co2.

Re. the fire extinguisher, the pressure gauge does not determine the pressure capacity of the tank, but I believe it should be ok for a buffer if the red line on the gauge is 12bar, for sure the tank will have a higher factor of safety! But as I have not used them before maybe you should take someone else's advice on fire extinguishers.