Hey Steve, just an update. Took my torch to work today and gutted all the OEM stuff. Added new diffuser & collet cup ect. Fired it up and again, welded great for about 5 min then no purge. Finally called HTP and they informed me that they have been having issues with the torch when it heats up a...

Thx Steve for the info. You had mentioned the "big burst" of argon pressure. I definitely see that when first pressing on the foot. Pedal (hot or cold) then it tapers down to the set purge pressure when cold but when hot it. Goes below the set pressure and hovers around10/11 cfm. I've squi...

Just purchased a new HTP 221 invertig. Great machine thus far but I seem to be running into a problem with my purge and wanted to run it by some of you guys before I contact someone at HTP. The machine came with its own flow meter which appears to operate properly so here's my problem. While welding...