Leaking CO2 Regulator

[TheRunningMan]

The photo below is my leaking CO2 regulator. The leak was coming from where the gauge crews into the top of the regulator but now I've used PTFE tape it's now forcing it out of the bottom where the inlet pipe joins the regulator block. Would this pipe usually screw in and how would I fix it?

Cheers folks
Anthony

View media item 48809

 

[Burnerman]

It should screw in.....if you look up the large brass nut, is there an internal hexagon or similar which will help you unscrew it?
John

 

[TheRunningMan]

No hex nut or anything that would help me to unscrew it. I may just have to grip it well with a pair of mole grips