Commercial characteristics
- Sponsor who loaned the product for the magazine: Acquired on our own funds
- Price of the tested product: 150 Euros
- Product category according to its selling price: Luxury (over 100 euros)
- Atomizer type: Reconstructable compression
- Number of resistances allowed: 2
- Resistor Type: Classic Reconstructible, Rebuildable Micro Coil
- Type of wicks supported: Silica, Cotton, Ekowool
- Quantity in milliliters announced by the manufacturer: 4
Reviewer comments on business characteristics
An excellent quality atomizer, with the possibility of using it as a micro coil with another insulator associated with a new axis (sold separately as an option) allowing a more generous air flow, even of PowerVaping type.
The Kayfun 4 is the first atomizer sold with three different tanks, ensuring three aspects of the most aesthetic.
The authenticity of the product is visible only on the box and no longer on the atomizer.
Physical characteristics and felt quality
- Width or Diameter of the product in mms: 22
- Length or height of the product in mms as it is sold, but without its drip tip if it is present, and regardless of the length of the connection: 57.5
- Weight in grams of the product as sold, with its drip tip if it is present: 108
- Material constituting the product: Stainless steel
- Form Factor Type: Kayfun / Russian
- Number of component parts without screws and washers: 35
- Number of threads: 20
- Quality of the threads: Excellent
- Number of O-rings, Dript-Tip excluded: 10
- Quality of O-rings present: Very good
- O-ring positions: Drip-Tip Connection, Top Cap - Tank, Bottom Cap - Tank, Other
- Capacity in milliliters actually usable: 4
- Overall, do you appreciate the quality of manufacture of this product with regard to its price? Yes
Rating of the vapelier as to feelings quality: 5 / 5 
Reviewer's comments on physical characteristics and perceived quality
As I mentioned in the previous section, this atomizer is sold with 2 more tanks than the one used for the measurement.
Thus the second, composed of a 23mm wide Pyrex section (like the stainless steel one), measures 57.5mm without drip tip and weighs 102 gr with drip tip
The third is made of 22mm wide polycarbonate, measures 55.5mm and weighs 85 gr with drip tip.
The main material being stainless steel, it is also composed of two Teflon rings, a silver-plated copper / beryllium alloy spring, a polymer insulator for the NBR70 gaskets.
The total of the parts composing the atomizer with drip tip is 41 including: 10 O-rings, 1 square seal, 2 Teflon support rings, 1 contact spring, 1 adjustment screw and other parts…
The number of threads that I was able to count is higher than the standard values of our protocols… There are many of them.
All the materials composing this atomizer have been carefully chosen. Up to the spring, very stressed by compression, whose alloy completely corresponds to its function.
Let's be clear, it's almost impossible to do better in terms of quality materials, hat!
Functional features
- Connection type: 510
- Adjustable positive stud? Yes, through an adjustment by thread, the assembly will be flush in all cases
- Presence of air flow regulation? Yes, and variable
- Diameter in mms maximum of the air regulation possible: 7
- Minimum diameter in mms of the air regulation possible: 0.1
- Positioning of the air regulation: Positioning of the air regulation adjustable effectively
- Spray chamber type: Chimney type
- Heat dissipation of the product: Excellent
Reviewer's comments on functional features
The setting of the positive stud remains standard. On the other hand, it is necessary to remove this screw to access another small screw in the heart of the atomizer in order to adjust the desired air flow using a thin and long screwdriver ... before replacing the screw of pin 510.
The maximum and minimum diameters for the air regulation are not indicated, but screwed in fully, the air no longer passes into the atomizer. For a very aerial draft it is possible to completely remove the threaded screw.
The resistances are ventilated through a single hole under them.
Drip-Tip Features
- Drip tip type: 510 Only
- Presence of a Drip-Tip? Yes, the vaper can immediately use the product
- Length and type of drip-tip present: Medium
- Quality of the drip-tip present: Very good
Reviewer's comments on the Drip-Tip
Most drips tip can fit the atomizer
Evaluation of the packaging
- Presence of a box accompanying the product: Yes
- Would you say that the packaging is up to the price of the product? Can do better
- Presence of a user manual? Yes
- Is the manual understandable for a non-English speaker? Yes
- Does the manual explain ALL features? Yes
Vapelier's note on packaging: 4.5 / 5 
Reviewer's comments on conditioning
A simple cardboard box for this type of atomizer at this price level is always a little disappointing.
Given the number of seals present in this atomizer, I would have appreciated finding a bag of additional seals in case of loss as well as an extra spring.
In this regard, be careful because by unscrewing the plate, this part can easily fall and get lost !!! Without this spring responsible for the positive contact the atomizer will be unusable.
This manual is only in German and English, however a French version is available on the net.
The complexity of the atomizer requires careful reading of this manual.
Appreciations in use
- Transport facilities with the mod of the test configuration: Nothing helps, requires a shoulder bag
- Disassembly and cleaning facilities: Easy but requires a workspace
- Filling facilities: Easy, even standing in the street
- Easy to change resistors: Easy but requires a workspace to lose nothing
- Is it possible to use this product throughout the day with several vials of EJuice? Yes perfectly
- Was there leak after one day of use? No
- In the event of leaks during tests, descriptions of the situations in which they occurred
Vapelier's note on ease of use: 3.1 / 5 
Reviewer's comments on the use of the product
It is reconstructable, so necessarily a workspace is necessary to change the resistance.
I nevertheless really appreciated being able to change my wick or my resistance without emptying my tank. This is a real advance compared to the previous version.
I won't go so far as to close my eyes to fill the tank but this atomizer can be filled by the base of the chimney turned over with a needle or, from above by removing the top cap with all types of bottle tips .
The only precaution to take whatever the case is to remember to unscrew the juice inlet ring ... otherwise ... everything will leak!
I noticed a “trick” to know the state of this regulating ring. Loose, the atomizer is slightly “wobbly”, it only regains its rigidity when the ring is tightened in order to play its role of regulator of juice within the ato.
Recommendations for use
- With which type of mod is it advisable to use this product? Electronics AND Mechanics
- With which mod model is it advisable to use this product? all models will go with this atomizer, meca or electro
- With which type of EJuice is it advisable to use this product? All liquids without problem
- Description of the test configuration used: I used the three tanks present one after the other, on a Némesis without top cap with a hybrid adapter
- Description of the ideal configuration with this product: a 22 mm diameter model, in SS would be preferable to hormonize the whole
was the product liked by the reviewer: Yes
Overall average of the Vapelier for this product: 4.4 / 5 
Link to a video review or blog maintained by the reviewer author of the review
The mood ticket of the reviewer
This atomizer offers very nice finishes, with two distinct look by a 22mm polycarbonate tank or with 23mm steel or pyrex rings.
The quality of materials is irreproachable.
In case of prolonged non-use, it is necessary to cut the arrival of the juice on the wick.
I found this atomizer quite greedy in juice, but it is at the cost of a restitution of flavors much superior to a classic reconstructable.
It has 4 mounting screws for dual coil use, allowing each leg to be screwed independently of each other.
Leaks are possible if you do not follow the protocol imposed before filling (closed by the ring) and if the juice inlet holes are poorly covered by the wicks.
The authenticity of the product is only present on the box.
I recommend this atomizer beginners in the vape, by its complexity and its number of parts. Because the understanding of the operation requires a very good prior knowledge of the classic reconstructible.
There are supplements to this product sold separately ::
- kit 1 (various seals and spring)
- Kit 2 (insulator and lock nut)
- kit 3 (2 Teflon rings)
- 1 transparent black PPMA tank
- 2 hybrid connections. One for the Electro Semovar mod, the other for the Provari P3.
- 1 sub-ohm kit with a polymer insulator supporting high temperatures and its central screw with a larger opening than the original one
This atomizer requires a substantial adaptation time to fully understand its operation.
Do not hesitate to consult the instructions, videos, and advice that can be found.
In conclusion, I am delighted with my purchase for the excellent restitution of the flavors of the juices it offers.
(c) Copyright Le Vapelier SAS 2014 - Only full reproduction of this article is authorized - Any modification of any kind is totally prohibited and infringes the rights of this copyright.
