Morning all, I have a fire tech extinguisher fitter (original powder type) and noticed that the pressure has dropped a little over the last few years. Now it needs topping up. There is a presta valve (same as a car tyre) fitted to charge it as required. My question is, has any one topped up theirs, and did they have any problems? I don't want a face full of powder when I attach/ detach by bike pump to it!
