Help on servicing a Rothenberger oxy/gas set

[Gragson]

My old Roxy Plus brazing / weld kit is playing up, the control knobs have become notchy and the O2 does not turn on now, I've a few bottles of O2 and lots of gas so want to keep it going..

Rothenberger won't service it, and didn't seem to have a parts diagram for it which I thought odd.

There's an o ring that has perished where the reg locates onto the o2 bottle so I need to sort that.
But questions are is there any lube that should be used or should it all be bone dry?
Also, anyone know where I can get a parts diag for this set?

Many cheers

Edit - I've read that lube is a big no, so will dismantle and see why the knobs have become bad and why the o2 is not turning on.

If anyone can help with a parts diag that would be appreciated.

 

[brightspark]

you can use this on oxygen products for lubrication if u think its worthwhile buying .you can pick up new o rings from a bearing supplier https://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313&_nkw=narkox+grease+&_sacat=0

 

[voipio]

Krytox, Narox, and Zarox greases should all be OK with oxygen.

 

[Gragson]

Stripped all 4 of the controls down and found that someone had been over tightening shutting off, and as the plastic knobs act on the brass squared valves I had pretty much deformed everyone so they were just spinning or hardly catching.. built the plastic knobs back up with JB and needle filled square.
Working nicely now Teach me for over tightening but no one likes losing gas!