Double mantle version shown left, single mantle version right.
Mounts on top of the double mantle valve; part of the single mantle and stove valve.
Use in conjunction with the internal eccentric block to move tip cleaner shaft up and down the generator body.
Resulting up and down action "plunges" clean the generator gas tip.
Stem is easy to replace on double mantles, very difficult on single mantles and stoves.
Made of brass, packing is graphite.