You sure you've got a nitro bottle?

Every nitrogen bottle I've ever seen has female threads.

Male threads on oxygen bottles.

 

Yeah I'm sure I'm in Australia we have male thread on nitrogen bottles with a flat surface finish . Same connection as co2 just one size bigger for nitro

 

check uniweld

 

They make an adaptor for that application.

http://www.beveragefactory.com/draftbeer/tanks/adapters/nitrogen_regulator_co2_tank_adapter.shtml

 

thanks bud, but thats not it,

the reg i have has a female lose nut to connect to a male nipple.

the nitrogen bottles here have a male nipple slightly bigger than that needed to connect to my co2 reg.

co i need an male co2 connection to a female nitro connection, both with a flat end finish, not a cone like argon and acetylene regs have

 

Very common in the states to go from a N2 reg to a CO2 bottle.

Never seen anyone go from a CO2 reg to a nitrogen bottle.

There could be pressure rating issues. You may not be able to find an adaptor to do what you want to do.

 

In Australia we have different fittings for nitro and co2 bottles, not interchangable.
I dont know if theres an adaptor but you could maybe swap the fitting and stem on the regulator to fit the bottle you want to use, take your reg down to BOC or somewhere like that and tell them what you want to do.
Another issue you may run into though is BOC will most likely tell you that the seals in nitro and co2 regs are different and may fail...
What brand of reg have you got?

 

It's a cig reg 30,000kpa closed flows up to 2,500 kpa

 

Most good welding supply houses will have the nipple and nut you need, just swap out the nipple and you're good to go

But you might want to take the nipple and regulator with you, here in the States most are 1/4 iron pipe thread, I was going to do it a while ago, but the regulator was made, guess where china, and it had some wierd thread, maybe metric

 

CIG is pretty common, your reg probably has a type 30 fitting, standard for co2 in Australia, what you will need is a type 50, standard for nitro.

 

Cheers for all the help guys Iv pulled the neck out I'll go to boc soon and get one to suit a nitro one any one in aust . Know if the thread would be the same ? to screw into the reg ?