Which HPA | PCP seperator for 300 bar compressor? ! WARNING !

Short description:
In this video I discuss the difference between a cheaper HPA Airmega filter (oil/water separator) and the more expensive Tuxing seperator. Both separators are bought from Aliexpress (no seller name is mentioned). Purpose of this video is to make people aware of (possible) dangers of Chinese products.
For both separators, the following is discussed:
Unboxing: What parts are included?
Disassembly: What's inside?
Measure the dimensions: Are they correct?
Technical: Stress calculation, Is it safe for 300 bar air pressure?
Conclusion
Feel free to leave a comment if you have a question, notice an error or wrong statement.
WARNING:
Do not save money on safety! The seller on Aliexpress deceived me by sending a filter with different (smaller!) dimensions (wall thickness was 2.6 mm vs. 5.6 mm promised). I do not claim that every Airmega filter is dangerous, but mine is!
Sources:
7075 AA: en.wikipedia.o...
6061-T6: en.wikipedia.o...
Stress computation: www.engineerin....

[@jessecole1011]

Very good video. Thank you for making this. I am a Spanish teacher and have studied Spanish for my whole life. I know how challenging it is to learn another language. Your English is very good! I'm impressed with your level and pronunciation in English. I lived in Switzerland. I just learned a little German, but it is a difficult language.

[@aziziilyes7]

Very very very informative and knowledgeable video. You've maid my day with this video as I'm in need of this type of video to understand better how do the PCP filter works. I do really appreciate all of your hard work with researching and calculating all of these stuff. Despite I'm not an engineer and I managed to understand most of the points you covered in the video. Thumbs up for this great review 👌👍

[@TheWillem]

I am very glad that it helped you out! Thank you!

[@BOTzerker]

The issue with that Tuxing model there's no safety burst disk. Look at Tuxing double filter models and you'll see they added a burst disk. The latest double models have a safety valve that will open up releasing air.

[@BOTzerker]

There's multiple issues with the airmega model: 1) using it as it came with the inner elements packed loosely makes it function horribly, 2) the inner elements should be in a cartridge so the acid from the molecular sieve does not eat away at the cylinder, 3) if you manage to pack it so pressure can build up inside then you have a safety concern because there's no burst disk.

[@HeshamALAhdal]

You are a hero, thank you so much for this enlightenment..

[@jackmclane1826]

Generally I am quite anxious about how many people - many of which are totally clueless - playing around with such extremely high pressure compressed air, connecting pieces from the cheapest sources available, without understanding what they are doing. This first aluminium tube is a real hazard and could kill someone. The second tube is way better, but probably not made from 7075. That alloy does not like anodizing. I built my own seperator from stainless steel scrap. Even cheaper and a safety factor >10. ^^

[@RedReeter]

Thank you for the detailed analysis! I was going to do the calcs, maybe I still will, I too use worst case scenario as one never knows if a mfg used or accidently obtained a bad lot or lower quality material. 300 bar is nothing to take lightly. Tuxing seems to one of the better mfg available. So buyer beware, your live may be at risk. your video is greatly appreciated.

[@alanh7495]

Thanks for this extremely informative and interesting video, I appreciate it.

[@FreedomAirguns]

Hey there. I understand your concerns but, either **your math is wrong** being an order of magnitude bigger or you just proved, mathematically, that these are SAFE because, if the numbers I see @14:49 are correct, then 80.63 MPa are ~11694psi and 161.25 MPa are 23387.3352 psi...The average airgun doesn't go beyond 30 MPa and my manometer "stops counting" at 40... So, theoretically, IF your math is correct, then it's "fine". But, your math seems to be wrong according to many calculators online, based on ASME B31.3 Equation 3a.

[@JanTchi]

Status at 1. of February 2021, for "new model" Airmega filter (cca 22eur without shipping). Wall thickness is now about 1.7-1.9mm and on my model I have little bonus: there is visible sew. I don't think that it is safe even for 200 bar.

[@HeIIrox]

the Airmega filter propably pops before a burst disc 🤭

[@ferratilis]

I think that you might have the mpa properties of 6060 and 7075 aluminum backwards.

[@TeamKLT]

I received the same junk. I filed a dispute. Hope I get my $ back. If not, I may try bonding a carbon fiber reinforcement. I have been trying to find specs of carbon fiber burst pressure calculations but have not found anything :-(

[@TheWillem]

Never save money on these kind of things, I made the same mistake. 300 bar is seriously dangerous. My Tuxing is still holding up fine (I still recommend it). I disputed the seller as well and got partially refunded. Calculations with carbon fiber are more tricky. You need to know how many layers there are, how they are situated within the layers (probably completely isotropic material properties), strand thickness, etc. To conclude the story, buy high pressure tanks/ reinforcements with safety/ quality guarantee. I might try to turn the airmega into a .25 silencer. For the rest it is just pure waste. Best of luck!

[@JoseSantos-jd3dn]

same to me, but i buyed from a german seller. look for what they say to me: Good day. I'm terribly sorry for our mistake. We have updated the item but I forgot to revise the link. The item used to be 7.5mm, now it's 2.5mm. However, the material is changed to aerospace aluminum 7075, and the burst pressure test is 90mpa. So you don't need to worry. Would you mind taking 5 euro discount and as compensation and kindly help me to change the feedback? Or if you have other idea, please do not hesitate to let me know.

[@steveashton8669]

If using the Tuxing filter, how should you mount it, do you feed air into the filter from top or invert the filter and feed in from the bottom, I'm assuming best to feed from the bottom?

[@Life_a_bike]

From the compressor to the bottom (male foster connector) of the filter

[@AirRuna1]

Gravity helps always put your filters and your bottle above the compressor it helps keep the water out

[@peteralexben]

je zou er nog een extra condens kamer onder moeten hangen ,om die vochtabsorber te sparen

[@pcpaccessoriesfactory5228]

how much for tuxing sell ? and how much for airmega sell ? do you know how much price difference ?

[@garythompson8867]

Thanks for you review. Do you have any updates or other filter recommendations?

[@TheWillem]

The Tuxing still works fine for me. Probably there are several better alternatives out there, but I am not aware of them!

[@peteralexben]

met water en een druk meter zou je kunnen testen waar hij het gaat begeven

[@jamesgreen9954]

I have one of these Tuxing filters on my HPA compressor for my PCP rifle and thought they were safe until I saw a picture on Amazon today in the reviews. If you go to Amazon and look at the Tuxing filter like yours except it has 3 materials in the filter cartridge. The first review at the bottom of the page is a guy showing pictures of a Tuxing split completely in half and he says it happened at 4300PSI. Go check it out, it’s why I came here to see what I could find out about the Tuxing and if others have burst or exploded.

[@TheWillem]

This sounds really dangerous. Can you post the link? Maybe that guy got a monday morning product. However, I will not use this filter for pressures over 260 bar, just to be safe.

[@jamesgreen9954]

I’m not sure how to post a link from my phone but if you type in (Tuxing diving water separator 4500psi PCP air compressor oil water filter 300 bar) in the search bar it should come up. It’s the Tuxing that has the clear tube inside that contains charcoal, molecular sieve and desiccant in the clear plastic tube that goes inside of the Gold aluminum outer pipe. It’s the first review at the bottom of the page and was posted in March of 2020. The guy posted 2 pictures with his review showing the gold pipe split it’s entire length. It’s dam scary since I use that exact filter and have been putting 4300psi in my reinforced carbon fiber tank. However I have only used the filter 5 or 6 times. Sorry I don’t know how to leave a link from my phone, all PCP guys that use this filter to fill there tank should see the filter that failed tho.

[@emilbaligod1935]

Link?

[@lep77356]

@@emilbaligod1935 www.amazon.com/Diving-Seperator-compressor-Filter-L350mmOD49mmID36mm/dp/B07KQVC5SZ/ref=sr_1_39?dchild=1&keywords=Tuxing+diving+water+separator+4500psi+PCP+air+compressor+oil+water+filter+300+bar&qid=1609540931&sr=8-39#customerReviews

[@emilbaligod1935]

@@lep77356 Thank you for sharing. That is absolutely a huge bang based on the pictures. Those parts may have flown several meters away..

[@AyshaRilwan-xe8kv]

Parts prices send

[@SK-me9by]

The Airmega filter at least will work safely for compressor's air Intake. So, not a total loss.

[@TheWillem]

I had to laugh at this one, you are absolutely right! I have a lathe, and I did consider transforming it into a silencer for one of my air rifles. But then again, I dislike the idea of having Chinese crap at the end of my FX Crown haha

[@peteralexben]

een airfilter from a bike should work but this have to much resistance

[@SK-me9by]

@@peteralexben Not at all, these types of filters are for separating out oil and Water and keeping it out of the air-tanks.

[@Pauly5150]

Hi, does the Tuxing have burst discs?

[@TheWillem]

Sorry for late reply. The one from the video hasn't. But my Warrior compressor has!

[@barryfurniss]

Logic would dictate that if you suck air throgh a filter the filter will get damp. Any dry air then sucked through a damp filter will therefore become damp surely? So you would need to replace with a dry filter every time. With other materials you must still drain any moisture out or the desicant will just reabsorb it. Either way the moisture must surely be removed ??????????????? Seems they are just reciculating it!

[@TheWillem]

Not entirely true. I would advise you to search for molecular sieve. It will absorp moisture and oil. After a certain usage, the molecular sieve is satisfied by these damps and requires replacement.

[@pcpaccessoriesfactory5228]

airmega use 7075 aluminum .

[@vivendoumdiadecadavez9259]

PARA QUEM USA ATE 200 BAR DE PRESSAO..IDEAL...ACIMA DISTO...JA NAO SEI

[@AwesomeFPV]

For the Airmega would 250 bar be ok?

[@TheWillem]

I would definitely never use the airmega. Also after seeing the comment and link to the customer review (some comments below) of the tuxing seperator, I would never go over 250 bar for these seperators (the tuxing seperator exploded at ~290 bar). I am considering to make a steel cage for the tuxing filter for now. In case it would explode, at least the large pieces would not be leathal. Also, i am looking around to find an alternative for the tuxing seperator. I want 100% quality warranty that it can never explode at 300 bar.

[@AwesomeFPV]

@@TheWillem thanks for the reply I have removed it from the compressor not worth the risk! Steel tube is a good idea!

[@TheWillem]

@@AwesomeFPV wise decision, stay safe!

[@einhundertfunfzig4919]

Are you American? I really can’t tell!

[@TheWillem]

Is this a serious question? Because if it is, I'm happy that you did not notice any Dutch accent!

[@ToreDL87]

@@TheWillem I know a Dutch guy with the name of Willem, so I had a fair idea xD

[@dennisdowns9674]

Is this for your 1100trapmaster,?

[@TheWillem]

It is for my PCP setup. I have new warrior 300 bar compressor and I use it to fill my 230 and 300 bar 5 l tanks. I have already sold my trapmaster 1100 since someone was offering a lot of money for it and I needed it :(

[@tomspeed2000]

Thanks a lot man, you save me :) I used that golden big tube many time with no problems, only issue is because the pressure in the tube is so high after used its absolutely hard to re open the caps to replace the cottons.. also the green o rings may exploded and cos air leaks.. i wanted order this small black one cos it so cheap , after watching this i will again order the golden one ..

[@TheWillem]

@@tomspeed2000 I am glad that I could help you out! Being an engineering student, playing with these kinds of pressures, safety factors are absolutely important. Maybe you over tighten the golden one, mine is leak-free when hand tightened. Best of luck mate!

[@Сергей-д1т6с]

Эх жаль по татарски не понимаю

[@whatmust8146]

Can be 10 minutes clip if you exclude the unnecessary analysis. I don't even need to know the analysis. 1. Wall thickness 2. Molecular sieve Those 2 make it a better filter regardless of cost. Spare the analysis. No body cares!!!!!!!

[@TheWillem]

And this is exactly the problem with humanity. These days everybody assumes statements are correct when something is said on the internet. Not being critical, not having common sense and not having knowledge of stuff kills people. Especially when you are playing around with this magnitude of pressure. concerning your two items, wall thickness is not the determining factor. A seamed pipe is structurally less decent than a seamless pipe.