How to remove a grease nipple....?

[LeeDevelopment]

I've just stripped down a front Middleburn hub, does anyone know how I remove the grease nipple perchance?

 

[ishaw]

I don't, but I also need to strip down a set of these hubs. I asked a while back how to do it and got nothing, so if you are able to share the process, I'd like to know how.