Browsing the forums I see that quite a few people are not happy with the Protank and Evod b/c of leakage. I have had both the Protank and Evod for a few months now. I have not had any leakage issue with the Protank at all. I have no problem even vaping the last drop of juice out of it. With the Evod, I do occasionally get some leakage when the juice level is low. I use 70/30 PG/VG juices.
Last night I tried putting an Evod head in a Protank and realized that the Evod head I used didnt really fit the Protank base that well. The problem was that the flange on this Evod head is just a teeny bit too big for me to be able to screw it all the way down in the base. Tried a few other Evod heads and it was the same.
You know, for the Evod, the head just flushes against the top of the base after you screw it down, but for the PT, the head recesses into the PT base. So the slightly bigger flange on these Evod heads is actually grinding a bit against the wall of the recess in the PT base when I screwed it down and so they wont go all the way in.
Then I remembered I just got in a new batch of Evod heads that are actually made by Kanger. The previous ones I tried were all generic. Sure enough, the Kanger made Evod heads fit perfectly in the Protank base.
This got me thinking that maybe all the leakage problems with these 2 tanks are caused by production variations in the size of the flange, especially if they are generic heads vs official Kanger made heads. If the flange on a head is just a tag small in an Evod base, it will not seal the hole completely. The tiny gap may be enough to cause leakage when the juice level is low b/c the draws are of higher pressure when the juice level is low. Accordingly, if the flange on a Protank head is just a tag too big, you may not be able to screw it down tight enough for a solid seal.
Could this be the cause?
Last night I tried putting an Evod head in a Protank and realized that the Evod head I used didnt really fit the Protank base that well. The problem was that the flange on this Evod head is just a teeny bit too big for me to be able to screw it all the way down in the base. Tried a few other Evod heads and it was the same.
You know, for the Evod, the head just flushes against the top of the base after you screw it down, but for the PT, the head recesses into the PT base. So the slightly bigger flange on these Evod heads is actually grinding a bit against the wall of the recess in the PT base when I screwed it down and so they wont go all the way in.
Then I remembered I just got in a new batch of Evod heads that are actually made by Kanger. The previous ones I tried were all generic. Sure enough, the Kanger made Evod heads fit perfectly in the Protank base.
This got me thinking that maybe all the leakage problems with these 2 tanks are caused by production variations in the size of the flange, especially if they are generic heads vs official Kanger made heads. If the flange on a head is just a tag small in an Evod base, it will not seal the hole completely. The tiny gap may be enough to cause leakage when the juice level is low b/c the draws are of higher pressure when the juice level is low. Accordingly, if the flange on a Protank head is just a tag too big, you may not be able to screw it down tight enough for a solid seal.
Could this be the cause?
