Three Stainless Steel Breather Tubes
for Parker 51 Demi Aerometric Fountain Pens
Brand new precision-made breather tubes, manufactured to exact original Parker dimensions for the smaller-sized 51 Demi fountain pens. While many unrestored Aerometric 51s will suck up water (or ink) when their sacs are squeezed, that does not mean they will fill completely or write properly as found. In particular, the original sterling silver breather tube is often clogged or badly corroded (the examples shown above are typical), allowing the sac to fill to only a fraction of its capacity and shedding debris that does nothing to improve the reliability of ink flow.
A key element of original Parker Aerometric breather tubes is the small hole drilled through one side about 6 mm from where the tube enters the feed. This hole is carefully sized and placed so as to equalize internal and external air pressure, preventing the expulsion of ink during flight. Our breather tubes retain this feature, and will enable your 51 to perform like new again.
NOTE: These tubes will not fit early 51s with Vacumatic-style plunger pump fillers, nor will they fit later production 51s with plastic breather tubes. They will fit the great majority of squeeze-filling Demi-sized("Aerometric") 51s, originally equipped with a metal breather tube. For the larger, standard-sized 51, we sell the correct, longer tubes here and here
Payment
If you are buying more than one item and the shipping charges are not calculated correctly, please let us know and DO NOT PAY until we can adjust the shipping charges manually.Terms of Sale
We strongly believe in full and explicit description of any condition problems or flaws, and in very conservative grading. We stand behind our descriptions -- buy with confidence.
About Us
vintagepens is the eBay name of David Nishimura, doing business in Rhode Island as Vintage Pens LLC.
David has been buying, selling, and writing about old writing instruments since the late 1980s. He has been on eBay since 1997, the same year he launched one of the first vintage pen collecting websites. David is an active pen history blogger, and a regular presence on pen collecting forums and social media, as well as at traditional pen shows.
Contact
David Nishimura
Vintage Pens LLC
PO Box 41452
Providence RI 02940-1452