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Home Shop Entry Level Fountain Pens Gravitas - Ultemate Vac Ultem
Gravitas

Gravitas - Ultemate Vac Ultem

€200,00 €140,00 / Sale
Tax not included. Shipping calculated at checkout.
4.61 (44 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Ultemate Vac Ultem
€200,00 €140,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

Introducing the Gravitas Ultemate Vac, a groundbreaking design and Gravitas' inaugural venture into complex filling systems. This fountain pen redefines durability, incorporating titanium in key areas to ensure longevity, addressing common weaknesses found in other vacuum pens. ULTEM resin is a high performance polyetherimide thermoplastic (PEI) - used in the manufacturing process of circuit boards, sterilisation equipment and most notably in the making of aircraft parts, it offers high strength and stiffness, a broad chemical resistance, making it expensive and used for only high demanding applications.

Despite its robust construction, the fountain pen remains lightweight, featuring a transparent Ultem section that allows for easy monitoring of ink levels in the secondary chamber. Easy to clean and maintain since the whole design is put together using threads and gaskets, different from other vacuum pens assembled using glue.

The 25mm-long section, tapering from 11.9mm to 10.2mm in width, provides a comfortable grip that is well known by fountain pen users - the hour glas shape. The nib is a steel size #6 designed and manufactured by Gravitas - paired with abs plastic feeder.

With a generous capacity exceeding 2.5ml and a secondary chamber holding 0.7ml, the Ultemate Vac offers ample ink for extended writing sessions. The second chamber is equipped with a shut-off valve to prevent ink mishaps, ensuring a mess-free experience. When using the Ultimate Vac it is recommended for the end knob to be unscrewed, thus offering a more constant and wet ink flow. 

Designed for convenience, this pen can be posted and disassembled for thorough cleaning. A crucial note: when removing the nib or cleaning the pen, apply silicone grease carefully to the threads and barrel inside to maintain water-tight integrity/smooth operating plunger and prevent ink spills. 

Elevate your writing experience with the innovative and resilient Gravitas Ultemate Vac.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Yellow/Demonstrator
- body material: Ultem
- cap type: Screw-cap
- filling mechanism: Vacuum 
- nib material: Steel 
- nib size: Extra Fine, Fine, Medium
- postable: Yes
- trim: Silver
- length overall (closed): 150 mm
- length overall (posted): 160 mm
- body length: 142 mm
- cap length: 65 mm
- body diameter: 15 mm
- cap diameter (without clip): 16 mm
- weight (overall): 30 grams
- body weight: 25 grams
- cap weight: 5 grams

Specifications

Brand: Gravitas
Model: Ultemate Vac
Edition:
Color: Yellow and Demonstrator
Body Material: Ultem
Finish:

Cap Type:
Screw
Filling Mechanism:
Vacuum Filler
Postable:
Yes
Trim Color: Silver
Length Overall (Closed): 150 mm
Length Overall (Posted): 160 mm
Body Length (Uncapped):
142 mm
Body Diameter: 15 mm
Cap Diameter (Without Clip): 16 mm
Weight Overall: 30 g
Body Weight: 25 g

Customer Reviews

Based on 44 reviews
Write a review
80%
(35)
11%
(5)
2%
(1)
5%
(2)
2%
(1)
92.9
100.0
C
Chris

The best Jowo #6 pen body on the market. Just an overall fantastic pen. Delivery was also really quick. Im in the US and recived the item in less than a week.

S
Stephen

Excellent pen!

D
Destiny Smith
Almost Perfect!

This pen is nearly perfect!
The fit and finish of my pen is perfect, there are no gaps, chips, burrs, spurs or cowboy boots anywhere on this pen; the Ultem is polished to the point of looking like amber polycarbonate.
The filling mechanism is a vacuum filler system, but it has a secondary ink chamber between the primary ink chamber and the feed, similar to the system that an Italian pen company pioneered about 28 years ago.
The nib and feed are very smooth. I have a Fine nib, and I find the line to vary from Fine to Medium, depending on which ink and paper you use. The nib is relative wet, which makes it perfect for me, because I find Pelikan 4001 Royal Blue to be “dry” enough to cause hard starts and skips with most of my pens, but Gravitas pens seem to thrive on it. So, if you think this pen is too wet, try the Pelikan 4001 Royal Blue ink.
The cap threads…okay, yes, whenever you you force two dissimilar materials together, like an Ultem/plastic cap and metal threads, the softer material is going to wear out sooner. Oftentimes, that’s intentional; you sacrifice the cheaper/easier to replace part, but prolong the life of the more expensive/more difficult to replace part. It should be cheaper to replace a cap than the body of the pen, which is an assembly of various parts, glued together. You can minimize damage from cross threading when capping the pen by rotating the the pen and cap in an uncapping rotation, gently pushing the two parts together, until you feel the threads “snap”. Some pens may require a “double snap”. Then everything should be lined up correctly to allow you to cap the pen without damaging the pen.
On the plus side, the clear material lets you see how the precisely machined lip inside the cap meets the forward edge of the grip section, preventing the nib from drying out very quickly. Had the pen inked up, sitting on my desk, untouched, for over a week, and it started writing as soon as the nib touched paper.
Would definitely buy again if I lost this pen!

Z
Zaman
My experience with Ultemate Vac and Pen Venture

This is a good quality pen - exectly as showen in the photos on the website and has all the quirks etc. as described in videos. I love it, the qiality is very good and the extra fine nib on this pen is just gorgeous. I bought both this pen (at a great price) along with my Gravitas Carbon Black in Fine nib and I tend to prefer this pen for its dimentions and ease of writing. Few important things to mention. This was my first purchase from Pen Venture and my experience with this team was A+++. Their response time to queries, shipment etc. was the best in my experience. DHL as a complany is excellent in terms of time they take for delivery, but boy are they expensive!! their charges on this end (after already paying shippment cost on checkout) were phenomenal - more than the VAT+Taxes on this end in UAE. All in all very satisfied and will highly recommend Pen Venture and Gravitas to the community. Thank you to Ben Walsh (His accent reminds me of many years I spent in Dublin) and Pen Venture Team.

M
Matthew
Great Alternative to Pilot 823

This is a great alternative to the Pilot 823 and honestly I’d pick this over the 823. First, I’ve tried an 823 several times and I don’t care for their nibs, which is usually the case with Gravitas but it appears they’ve changed their nibs. The broad nib on this was acceptable. Broad line and a big juicy. I LOVE how deeply and securely this pen posts. It is truly great in the hand and perfectly balanced. It’s also so easy to take apart if you desire and for cleaning.

123
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★ Reviews

Let customers speak for us

857 reviews
Write a review
92%
(790)
6%
(53)
1%
(6)
1%
(5)
0%
(3)
818
49
A
Gravitas - Vac 2.0 Aluminium | Black
Andreas Andersson
Substantial, reliable, and smooth

The Gravitas Vac 2.0 is an amazing tool for handwriting. The nib is smooth, distinct, and reliable, and it has some weight due to its durable materials, black aluminium/aluminum and ultem, the perfect combination of a tool which will survive most of us, still functioning if the internal vacuum piston system is cared for. I have enjoyed this fountain pen for seven days and I am pleased to say it is one of my better ones, and it is fun to use. I recommend it.

(Emy was correct: The nib has great flow, about six drops of ink will automatically flow from the nib after I have just filled it, after that no problems; tissue paper or the ink bottle under the nib until that happens is recommended, other than that: an excellent fountain pen.)

D
Tombow - Mono Sand 512B | Ink Eraser
Dan Shapiro
Mono sand combo eraser

This is good. It erases well

N
Gravitas - Vac 2.0 Aluminium | Black
Nabil Zouari
FANTASTIC !!!!!

What a fantastic pen—and customized too!

It writes beautifully and arrived surprisingly quickly, even though I’m in Canada. This is my third order from Pen Venture, and once again, the experience has been outstanding. It's always a pleasure to come back.

My Gravitas arrived perfectly tuned and was ready to write straight out of the box. I filled it with Pelikan Royal Blue, and from the very first stroke, it was smooth, consistent, and an absolute joy to use.

I own several excellent fountain pens, including a Pilot Custom 823, a Sailor 1911, and a Leonardo Momento Zero, and I can honestly say that this Gravitas holds its own among them. It is remarkably well made and comes very close to being the perfect writing instrument.

A big thank you to the entire Pen Venture team for the exceptional service, careful tuning, and attention to detail. I’m already looking forward to my next order!

C
Gravitas - Vac 2.0 Aluminium | Black
Cosmin R.
A Worthy Sequel to an Awesome Pen

On its own, this pen feels very durable and premium, and the bead-blasted, matte black coated treatment gives it a very “professional” vibe. The Fine nib is bouncy and smooth, very usable on the underside as well (with added feedback, but not scratchy), the ribbed steel grip is very comfortable, the feed holds a lot of ink on its own, and the reservoirs behind it will keep it in writing condition for dozens upon dozens of pages after a fill.

The cap screws open and closed smoothly, with a very satisfying click at the end when closed; it posts deeply, and it also posts securely after being pressed down slightly on the barrel. It is light enough that it does not back-weight the pen significantly when posted.

The barrel construction, along with the newly-implemented Kraken filling system, ensure a significant amount of ink is pulled in from the first try. Much like the main cap, the blind-cap screws open and closed smoothly for refills or ink transfers between reservoirs.

Compared to its predecessor:
Fewer transparent areas overall, but the Vac 2.0’s structure feels more solid than the Ultemate Vac.
The body thickness and thread profiles are different on the Vac 2.0 than on the Ultemate Vac, no mix-and-match potential here.
The matte black coating gives the pen a more refined, premium feel on the metallic parts.
The inner lining of the cap doesn’t get stuck in the barrel thread as often, and when it does, it either slips back into correct position, or it is easier to unscrew and reposition, without the metal thread eating into the cap material.
The coated, no-breather-hole design of the new Gravitas steel nib may not be to everyone’s taste, but I like it a lot, and functionally, this nib feels more bouncy and polished, with smoother writing than its predecessor.
The feed seems to pick up a lot more ink on its own from just a 5-second dip, and the small reservoir behind it looks to have more capacity to back it up before needing to unscrew the blind cap and refill it from the large reservoir.
The Kraken filling system seems to suck up significantly more ink per pump than the mechanism from the Ultemate Vac.

Overall, a very well made fountain pen, and a thorough refinement to an already excellent design. Very satisfied with this purchase!

User picture User picture
K
Gravitas - Vac 2.0 Aluminium | Black
Keith Schumacker
Great Little Monster

Wow!
Just like the Monster but thinner. For me it is more comfortable for longer writing sessions. The filling system is stellar. Holds lots of ink. As always Ben Walsh and Emy have delivered a innovative and enjoyable writing experience. Can't wait to see what's next. Keep up the wonderful work!

123
Review picture
Cosmin R.
A Worthy Sequel to an Awesome Pen

On its own, this pen feels very durable and premium, and the bead-blasted, matte black coated treatment gives it a very “professional” vibe. The Fine nib is bouncy and smooth, very usable on the underside as well (with added feedback, but not scratchy), the ribbed steel grip is very comfortable, the feed holds a lot of ink on its own, and the reservoirs behind it will keep it in writing condition for dozens upon dozens of pages after a fill.

The cap screws open and closed smoothly, with a very satisfying click at the end when closed; it posts deeply, and it also posts securely after being pressed down slightly on the barrel. It is light enough that it does not back-weight the pen significantly when posted.

The barrel construction, along with the newly-implemented Kraken filling system, ensure a significant amount of ink is pulled in from the first try. Much like the main cap, the blind-cap screws open and closed smoothly for refills or ink transfers between reservoirs.

Compared to its predecessor:
Fewer transparent areas overall, but the Vac 2.0’s structure feels more solid than the Ultemate Vac.
The body thickness and thread profiles are different on the Vac 2.0 than on the Ultemate Vac, no mix-and-match potential here.
The matte black coating gives the pen a more refined, premium feel on the metallic parts.
The inner lining of the cap doesn’t get stuck in the barrel thread as often, and when it does, it either slips back into correct position, or it is easier to unscrew and reposition, without the metal thread eating into the cap material.
The coated, no-breather-hole design of the new Gravitas steel nib may not be to everyone’s taste, but I like it a lot, and functionally, this nib feels more bouncy and polished, with smoother writing than its predecessor.
The feed seems to pick up a lot more ink on its own from just a 5-second dip, and the small reservoir behind it looks to have more capacity to back it up before needing to unscrew the blind cap and refill it from the large reservoir.
The Kraken filling system seems to suck up significantly more ink per pump than the mechanism from the Ultemate Vac.

Overall, a very well made fountain pen, and a thorough refinement to an already excellent design. Very satisfied with this purchase!

Gravitas - Vac 2.0 Aluminium | Black