Sphere recharging

[Polestar]

Hi there, I have a large collection of spheres collected over the years and it seems to make sense for me to test and recharge these rather than keep buying new ones each time. I am after your help finding a kit of parts that would enable me to do this. Any and all help gratefully recieved. Murray

[Dieselman]

People generally make their own rigs.
There is a valve system available from Tecnosir, though dealing with them can be rather fraught as they often don't answer requests. The valves cost about £10 each and in my experience sometimes weep gas. https://www.tecnosirstore.com/en_GB

Threads about sphere testing and refilling.
viewtopic.php?f=7&t=10339
viewtopic.php?f=7&t=11014

Depending on where you are it might be worth finding a member with testing and refilling rigs to test yours.