Originally Posted by
Ron Z
I think that Chrissy is right; your pen is a touchdown (TD) filler.
A TD filler is a pneumatic filler, i.e. pressing the tube down compresses the air in the barrel, which squeezes the sac. At the end of the stroke you should hear a little "chiff" as the compressed air is released. As the pressure drops, the sac expands and ink flows into the pen. The pen is now full. If you cycle the TD tube again, ink should be pushed out of the pen. If it doesn't the pen likely needs to be restored, i.e. the sac inside the metal sac guard replaced, nib cleaned, and the 0-ring at the end of the barrel replaced.
Nice pens, that I like better than their later snorkel siblings.
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