Older SS Performer propane tank question

[Tim M.]

I picked up and older SS performer for $20 this weekend.. some cleanup yielded a nice find but I seem to remember reading that this tank cannot (or will not?) be filled? Also does anyone know when Weber discontinued this tank and went to the triangle knob that I know can be filled?

 

[Noe]

Tim just buy the new valve and replace it on the tank should be good to go.