Wanted: Tank Valve (Drum valve?)

[jason.loxton]

I bought a jury rigged draft system, along with some corny, etc. off Kijiji a while back. The regulator and tank (drum) valve are both O2, mounted on an old extinguisher. I took it in to Don Breton's for a hydro, and they couldn't even hook it up to fill it for the test, as the seat was completely different (which is how I discovered the O2 issue--confirmed by checking the CPA code on the regulator). Anyway, the rest of the set up is useful to welder, but not to me, but there's nothing obviously wrong with the tank. However, I am reluctant to spend $40-50 for a new valve (although, assuming the tank passes hydro, this would still be cheaper than a new tank). It occurs to me that anyone who has had a tank FAIL a hydro, probably has a tank valve they don't need. Anyone in this boat? Alternatively, does anyone know where I can pick one up cheap? (Or, beating that, anyone have a tank they want to get rid of cheap?)

Jason