Lantern ring for stem injection and ISO fugitive emission stem packing

[alby87]

Dear all,

for a gate valve 6"150 exist a solution in which i can use (at the same time) a lantern ring for stem injection and a ARMASEAL 312 graphite packing for ISO FE 15848 class B?
Considering that i cannot split the stem packing

 

[hsbcn]

What FE standard are you trying to apply?

My focus is on petrochemical valves for corrosive applications.