Tag Archives: One-Way Shutoff Valve

Fountain Pen Shootout Opus88 Koloro vs. Opus88 Koloro Demonstrator

Let’s compare two pens with the same cool filling system by the same brand.  The Koloro was sent to me by Pen Chalet; the Demonstrator was sent to me by Goldspot – thanks a lot!  You can check out the full reviews of these pens, if you like: Opus88 Koloro and Opus88 Koloro Demonstrator.

Fountain Pen Shootout Opus88 Koloro vs. Opus88 Koloro Demonstrator

Opus88 Koloro Demonstrator Fountain Pen Review

This pen was kindly sent to me by Goldspot – thank you!


Measurements

Length (capped): 147.3 mm/5.80″
Length (uncapped): 136.6 mm/5.38″
Length (posted): N/A
Diameter (section): 11.1 – 12.9 mm/0.44″ – 0.51″
Diameter (barrel): 14.2 – 15.0 mm/0.56″ – 0.59″
Weight (all): 30 g
Weight (cap): 10 g
Weight (body): 20 g

Opus88 Koloro Demonstrator Opus88 Koloro Demonstrator Opus88 Koloro Demonstrator Opus88 Koloro Demonstrator Opus88 Koloro Demonstrator

Opus88 Koloro Demonstrator

Opus88 Koloro Fountain Pen Review

This pen was kindly sent to me by Pen Chalet – thank you!

Measurements
Length (capped): 142.9 mm/5.62″
Length (uncapped): 125.8 mm/4.95″
Length (posted): 162.7 mm/6.40”
Diameter (section): 10.0 – 11.9 mm/0.39″ – 0.46″
Diameter (barrel): 12.0 – 14.1 mm/0.47″ – 0.55″
Weight (all): 24 g
Weight (cap): 11 g
Weight (body): 13 g

Opus88 Koloro Opus88 Koloro Opus88 Koloro Opus88 Koloro Opus88 Koloro

Opus88 Koloro

Danitrio Genkai Roiro-Migaki Fountain Pen Review

I picked up this beautiful pen from Chatterley Luxuries.

Measurements
Length (capped): 173.6 mm/6.84″
Length (uncapped): 150.6 mm/5.93″
Length (posted): N/A
Diameter (section): 13.3 – 14.4 mm/0.52″ – 0.57″
Diameter (barrel): 17.2 – 18.1 mm/0.68″ – 0.71″
Weight (all): 45 g
Weight (cap): 29 g
Weight (body): 16 g

Danitrio Genkai Roiro-Migaki Danitrio Genkai Roiro-Migaki Danitrio Genkai Roiro-Migaki Danitrio Genkai Roiro-Migaki Danitrio Genkai Roiro-Migaki

A superb artist’s rendition of a one-way shutoff valve.

My Personal Pens: Namiki Emperor Vermillion

The Namiki Emperor is a great pen, in every sense of the word.  It’s a giant ebonite pen, which is then lacquered with urushi.  The nib is Namiki’s #50 – and it’s enormous and a little springy (contrary to the modern Emperor nibs, which are stiffer, as I understand).  A behemoth, this eyedropper-filled pen with a one-way shutoff valve holds about 6 ml of ink – so I can use this for weeks without having to re-ink it.  If you are interested, I have also recorded a full review of this pen.  This beautiful pen was a gift from Azizah, which makes it all the more special.