I have a two stage oxygen regulator - National Model #2500.540. I was setting up for a class tomorrow, hooking up my 4 torches and checking for leaks, etc. I discovered a leak - not at the regulator to tank connection, but at the point where the inlet connection (hope that's the right language) enters the body of the regulator. At that connection, the regulator came with white teflon tape, just as there is white teflon tape where the gauges enter the body of the regulator. I think that the connection that is leaking has loosened over the years (I've had this regulator for 5-plus years). Can I safely disconnect the inlet connection, wrap some more teflon tape around it and then connect it back up and tighten it? Needless to say, I've canceled tomorrow's class until I resolve this.
Just to be clear, I am NOT talking about putting teflon tape at the regulator to torch connection.