Homebrew Co2 Air up system

[sanger]

Hey all i was wondering if anyobe has made their own diy version of the powertank. Im in the process of trying to track down parts but am finding it difficult to get my hands on a used co2 welding bottle and a descent regulator that will output 150psi. Heres a link to a good write up.
http://www.stu-offroad.com/recovery/co2/co2-1.htm

Let me know if you can help me out.

[Madmac]

it can be done, my old man did his own with an air liquide bottle, not sure where he bought the regulator

[spazbot]

you can buy just the reg from airup in australia and use it on a std rental co2 bottle, owning your own bottle is more a hassel as very few places will fill it, you basically have to get very friendly with the local fire extinguisher mob and get them to fill it for ya

[sanger]

yea getting one refilled isnt a drama i got a mate who owns a fire extinguisher shop. more concernec about regulator and bottle. anyone who has had experience please point me in the right direction.

[Tapage]

I use the bottle from Coca Cola here .. and found the regulator in a local tools/welding shop ..

[sanger]

ok well i have conceded to just renting a bottle so that soughts out that problem but im still left trying to find a Co2 regulator that will have an output of 150 psi. All welding and homebrew regulators dont come close to 150 psi.

[spazbot]

did you look at the ones airup sell ???
you could also order one from the states...
http://www.offroadtuff.com/CO2Regulators.htm

the cheap one at $33 cant be to bad not sure if you will need to make an adapter for the aussie style cylinder fittings though

[longlux]

ok well i have conceded to just renting a bottle so that soughts out that problem but im still left trying to find a Co2 regulator that will have an output of 150 psi. All welding and homebrew regulators dont come close to 150 psi.

http://www.air-up.com/4wd.html

You will be far better of purchasing your own from air-up I looked at renting one & overall it is more costly.

I will be picking up an air-up bottle next week for my keg system

http://www.air-up.com/home_brew.html

I was talking to a guy in Perth at one of the brew shops last week there have been some bottles imported from China that were not to Oz Standards no one can fill them legally.

[sanger]

renting will do me fine as i dont get out wheeling as often as i would like so shouldnt have to refill more than twice a year and rent on the bottle is $12/month so it shouldnt break the bank. As for the regulator i am looking at one from the states but am trying to find out what type thread they have on their co2 welding bottles to see if i can adapt to our bottles.

[me3@neuralfibre.com]

What pressure is in the bottles? From what I underswtand the co2 is liquid in the bottle giving much greater quantity. Hopefully this is less than the usual 3000psi in high pressure bottles.

Thanx
Paul

[sanger]

What pressure is in the bottles? From what I underswtand the co2 is liquid in the bottle giving much greater quantity. Hopefully this is less than the usual 3000psi in high pressure bottles.

Thanx
Paul

Not sure about pressure in bottles but know when the valve is opened it comes out around 3000psi and i want to reg it down to about 150 psi.

I have found out the US thread size on the valves of their CO2 cylinders are CGA 320 so i have to see if there is and adapet to fit our type 30 thread. Anyone know where to start looking?

[spazbot]

you will be able to get an adapter from BOC or possible parts from enzed etc, ive used them before when making up converters for our nitrogen bottles

[turps]

So how many litres of CO2 are in the air up system? Thats when its not compressed. As I have access to some 9lt cylinders that have 1800lts of air in them.

[sanger]

i'll suss some stuff out during the week and see what i can come up with.