Bernzomatic OX2500TK - Larger Oxygen Bottle + Gas / Oxygen Prices

Hi,



I have a Bernzomatic OX2500TC MAPP/Oxygen torch (http://ift.tt/UztpTl). This takes the 40Gram Bernzomatic Oxygen Bottles (around $27), with MAPP bottles being around $20. The bottle connectors are CGA600 on the Regulators -- one is left hand and the other is right hand thread so you can't mix them up.



What I would like to do is get a new regulator that allows me to use the larger 136Gram Oxygen Bromic Bottles. These larger Oxygen bottles have a different connector - M12.



Has anyone found a source in AU for a M12 Oxygen Regulator?





Please let me know of any cheaper sources for fuel/oxygen. I found the following

40Gram Oxygen

Gasweld http://ift.tt/1m4rBrc $28

Masters http://ift.tt/Uztq9I $29.98



Using the Master Price Guarantee would make Masters price around $25 per bottle.



136Gram Oxygen

Hare and Forbes http://ift.tt/1m4rE6l $42.90

Bunnings http://ift.tt/1m4rEmF $49.88

Not sure if Bunnings will price match as Hare and Forbes are 50km away from my nearest Bunnings.



I'm pretty sure this hose will allow you use LPG from a large bottle.

Bunning http://ift.tt/1m4rBHI $49.88



Is there any cheaper hose/connector options for using refillable LPG bottles?