Fitting Adapter for different torch

[bullethead67]

I have a 80LE High Freq plasma cutter and i am trying to attach my Thermal dynamics machine torch to it. The hose fitting on the machine is slightly larger than the hose connector. I think the hose connector is a 9/16 18 (O2B RTB)thread. I cant figure out the connection on the machine. Where can i get an adapter? I checked the parts store and the flare on the fittings are reversed from what they have available. This is crazy. why is there a fitting different from what everybody else uses??

[lugweld]

There is no standard thread for anything. Each maker has its proprietary design and threads. Would you expect a Lincoln torch to readily interchange for a Thermadyne or an ESAB?
However, if I were to guess,knowing more than a little about those machines, you'll find that the threads are probably inverted flare British gas(torch) threads. You can buy them from any half decent LWS. You'll have to order them, but they make them and they make the adapters. Do you know what your 'Thermadyne is? Then again, any machine shop worth its salt can fab one quite quickly for a nominal cost of probably less than half an hours labor, which will be about the same as the cost from the LWS.

Also, if your Plasma cutter is a HF design, then it won't work with a typical "cartridge" start type torch. HF torches are set to a fixed gap and the HF creates the power to jump the spark between the workpiece and the electrode. A older HF torch from any manufacturer should work though.

BTW, you had better have a heavy duty high amperage TD torch to handle the amperage with at least the 80 amp rating that the Everlast unit has.