Vevor 350 bar / 4500 PSI compressor - Review

[@pete7894]

I bought one of these and this was my experience with it. I direct filled rifle tanks without issues never more than once every half hour. When I started to fill SCBA tanks that did not go so well. I ran it straight for about 20 to 30 minutes and that melted the 2nd stage piston rings and no longer could get past 3000 psi just like that. I contacted VEVOR via online only and followed instructions and answered all questions, within a few weeks VEVOR sent me out 2 new sets of 2nd stage piston rings free of charge. I installed new piston rings, and the compressor is now working properly again. 1st stage rings were fine. To VEVOR, I recommend that an extra 2nd stage piston ring set should come with unit as mine did not, this would have left me more satisfied with this purchase and reduced stress. To users if filling tanks, I would not run straight, I don’t know what the magic number is, but run to long and it will melt down no matter what you do. Some say 20 minutes, I will never run more than 10 minutes myself between cool down periods is my plan going forward. Also, this is not a “Yong Heng” and parts are not the same. Parts for this one must go through VEVOR. Patients is a virtue here, Ha.

[@gregorkamensek3923]

Thanks for the input.

[@cubeamspro1003]

You forgot to mention that this pump wants to walk away and got to the next room while its pumping... lol

[@gregorkamensek3923]

Yes, I was considering asking my wife to sit on it... LOL

[@cubeamspro1003]

@@gregorkamensek3923 😄

[@marcelolima4172]

@@gregorkamensek3923 you must love her loo😂😂😂

[@gregorkamensek3923]

@@marcelolima4172 😆😁

[@pete7894]

@@cubeamspro1003 yes it walks alright. I counter sunk 4 holes into a board the size of the rubber feet then set the pump in the holes then clamped the board to the table, made board a bit larger the pump foot print. Rock solid now. Pump is still working under new use plan.

[@starlightHT]

What I can say is that it probably had a bad contact in the electrical part (basically tightening a screw on an electrical socket, it happened to me which activates the second stage of the compressor). Another tip is to use quality radiator fluid and never, ever cool it with water. I've had my china compressor for about 3 years and I change the oil (5w30 that I use in the car) every year religiously.

[@gregorkamensek3923]

Thanks for the tip and shared experiances. I wanted to use car oil as well but they are very particular what oil should be used so I followed their instructions.

[@starlightHT]

@@gregorkamensek3923 Don't forget to change the oil very regularly. As soon as you stop seeing it because it's black, change it. It takes little oil to change, If you treat it correctly, it will probably be the last one you need. It will last you a lifetime

[@joshuavanderwerf5246]

(TIP) Put coolelements from the freezer in your bucket of water....it will keep your compressor alot cooler. kind regards Joshua 😊

[@gregorkamensek3923]

Thanks for the tip :)

[@pullfan236]

Hi Gregor it is better to connect the pressure side of the waterpump/-hose at the top to get the best result for cooling and the retour on the bottem back to the tub. The high pressure cilinder generates the most heat so it needs the most cooling. I use a Tuxing 300 bar two cilinder for 5 years now and it still works fine. It has the same system for cooling and the pressure water hose is first connected to the high pressure cilinder and then to the low pressure cilinder and then back to the tub. I also recommend to install a better pump. The quantity, liter/hour, of the waterpump you get with the compressor is good but the waterpressure is very low so when the hose is a bit flat it loses it's capacity in l/h. For the oil in the compressor you can use regular motoroil for petrol engines 5 W 40 and change it once a year or when it's getting a dark colour. The Tuxing I have fills a 12 liter bottle from 200- to 310 bar in about 20minutes. I must say I keep good maitenance on my compressor and change every half year the 4 pistonrings in the high pressure cilinder. I Install them with a little bit siliconspray because they don't get any lubrication during their life. Thanks for your informative uploads.

[@gregorkamensek3923]

Thanks for the tips

[@ziadkadi]

Ive been filling my 8 liter tank for the last 5 years with the yong heng which is similar to that

[@pete7894]

@@ziadkadi yong heng has different and more second stage piston rings, the rings are also thicker and way more substantial. Not same. Also way easier to get.

[@Cincymike1]

I use the vevor oiless $170 one. It says 4500 psi but i do push it more on my gk1 i worry more about the fill hose blowing. The max i filled mine was approx 4800 psi but i dnt recommend doing that.

[@hansturpyn5455]

I push that one to 5000psi, 350bar for my gk1

[@Cincymike1]

@@hansturpyn5455 I believe it. It's such a small cylinder it fills up quick too

[@hansturpyn5455]

@@Cincymike1 yup

[@pedroluqueyuste3]

Hello, I have been watching your video and I would like to ask you a question, I want to buy a compressor but I don't know which one, can you tell me what you think of the Vevor compressor, and which one you recommend, I like the Vevor and the Tuxing TXES021, I would really appreciate your opinion, greetings Pedro Luque from Spain.

[@gregorkamensek3923]

Hi. I can only speak for Vevor. It works for me but I should point out that I am not using it that frequently. If you ask me, Vevor will fill you guns without issues but I would not fill bottles with it as it will overheat and probably damage the o-ring. But some people are using it for bottles and seem to do just fine. It will definitely require some care and maintenance if you do so.

[@fabiosantos8591]

Very well, the only thing you said that participated in the futuristic assembly and that I think was a disaster was: making the new RTI MORA have the charge handle only on the left side, that's very stupid, see if you can change that to be reversible on both sides. Fix it. Tx.

[@gregorkamensek3923]

Lol, you might have better success writing to RTI directly :)

[@ChrisGentleRock]

They publish it on their website only to reach 300 bar of pressure. But it may go up to 350 or 420 bar aswell. Why is this ?

[@gregorkamensek3923]

It is a manual stop compressor (it is in the title), the compressor keeps filling until you stop it. It does have a safety valves in case you forget it running (which you should avoid doing!). Intended operating pressure is up to 300 bars or 4500PSI, but of course if you leave it on, it will go further but it is not recommended considering it is designed for operational pressure of 300 bars.

[@MightyRude]

High pressure equipment should be rated 50% above spec but I don’t recommend taking it up that far (except maybe for testing)

[@ellcrow]

Dobar kompresor , potrebno je samo vodu odrzavat hladnom preko dobrog hladenja vode ili spojit direktno na cesmu

[@gregorkamensek3923]

Da, ali nije baš tako problem, za puške koje sam napunio u ovom videu nisam primjetio da se je voda sagrijala...

[@HGR2470]

Hi Gregor, thanks a lot for your videos! Could you please just tell me what pistol (model) you fill at first in this video? 🙂

[@gregorkamensek3923]

Huben GK1 ;)

[@suciptocipto8736]

Saya sedang mengembangkan kompresor biasa untuk menjadi kompresor pcp, cuma kendalanya di selang pipa stainless penghubung tekanan tinggi sulit saya dapatkan.

[@starlightHT]

Please do not use water to cool the compressor, it will create gum and oxidation where the water circulates. Unless you want to dismantle it every year to avoid heating problems. Use a coolant that we use in radiators and a quality one that says it is suitable for mixing metals such as aluminum.

[@ziadkadi]

I blow out the water from the water jacket after every use. It's been more than 5 years without issues. Yong heng

[@gregorkamensek3923]

Yeah, it is designed to be used with water, but I did express my concerns in the video. My concern was due to very high content of limestone an other minerals in water that we have... A dedicated coolant liquid is certainly a better solution but it is even less practical that the water already is...

[@starlightHT]

@@gregorkamensek3923 Unfortunately, all the ones that broke down (out of warranty) were also made to be used with water. When you have a mixture of metals, especially aluminum, it creates a chemical reaction that creates gum and becomes lodged on the internal walls of the engines. All the videos I saw repairing units like these all had this gum and limestone lodged where the water circulates. Then the internal temperature of the engine starts to rise and they start using ice in the hope of keeping the temperature in check, but it will eventually die (it happened to my first one). These units are made to be disposable (cheap to buy again). I also bought the oil you used (5 liters) and used it once and went back to using the premium one I use in the car. I didn't like it, too much oil in the air filters. Now I've been using the same air filter for about 2 years and it's still clean. Before I had to change air filters regularly because they were saturated in oil. And I fill a 4-liter bottle from 200 Bar to 300. And the least practical thing is that it breaks down when we need it most... I'm poor and I need to buy a lot of lead to power the 3 PCPs I have and not buy a compressor every 2 years.😁

[@marcelolima4172]

@@starlightHTthank for the advice, which coolant do you recommend ?

[@ThePredator2k]

Why you didn't fill the GK1 up to 350Bar? This Compressor can do 350 Bar easily

[@gregorkamensek3923]

Because the compressor is designed for 300 bars (according to the manufacturer) and although it is clear that the compressor can do it, I did not want to advertise it in the video...

[@ThePredator2k]

@@gregorkamensek3923 You're right, no PCP compressor officially states 350 bar. But all 300 bar PCP compressors on the market today can do 350 bar. How else are you going to fill your weapons up to 350 bar if you stick to 300 bar? I have exactly the same compressor in a different color and brand and the manufacturer says it can handle up to 40mpa/400 bar in the manual. The lines are designed for up to 600 bar. The only thing I would be careful with is the filter. I wouldn't use it up to 400 bar. I don't trust it. I wouldn't go over 350 bar with the filter. I pumped the compressor up to 370 bar 10 times in a row just to test it and it was no problem. There are filters on Amazon, eBay and Ali which, according to the manufacturer, can handle 40mpa/400 bar. You'll have to search a bit.

[@ThePredator2k]

@Gregor Kamensek you can fill guns/bottles up to 350 Bar with no Problem. And 6.8l or 9l bottle as well. A 6.8l bottle takes from 0-300 Bar estimated 1h. In 2x 30 min runs you can do this with 15 min break. And topping of a 6.8l from 250-300bar estimated 12-15 min. I use this compressors a lot. But the original water/oil filter is way to small for bottles. Even for guns it is not good. Its filtration is not high enough. And the oil they advertise in the manual vg46 is wrong oil. The correct oil for piston compressors is vg100. Vg46 is to thinn, trust me. VG46 is for screw compressors.

[@gregorkamensek3923]

Thanks for the tip... I looks like you have a lot of experiences with it.

[@ThePredator2k]

@@gregorkamensek3923 yes i do. I had so far 4 of them from different brands. And i use dem quite a lot. Better oil will be VG100. VG46 is very Thinn for piston compressor. It will be better to change the oil. 🫡

[@gregorkamensek3923]

@@ThePredator2k I will try VG100 at the next oil change...

[@emp731]

i use mine to fill a dive tank..(airgun use ONLY) 12-15 MINUTES RUN TIME maximum at a time....I always use large inline filters

[@giuseppedellesala6197]

Hi, I want to buy this for a dive tank. How many Liters is your dive tank?

[@inspector-tech]

Gregor... is there an idiot-proof compressor you can recommend for me? I have a company near me that can fill up tanks and I planned to get one or two 6.8L Tuxing carbon fibre bottles and get them filled when necessary. I won't be shooting hundreds of rounds per day. However, with what happened with the lockdowns I'm cautious about having my own air supplies (both electric and manual just in case the power goes down). So after looking at what's out there I liked the look of the Hill compressor but that's overkill for me & too pricey. I wasn't really keen on anything else so decided I will get the tanks, get them filled by the scuba diving company near me and if I'm unable to go there I will manually top up the tanks with a Hill hand pump every single time after filling my gun (so the tank pressure doesn't drop too low). Do you think this is a good solution.? Or can you recommend a top notch low maintenance compressor that won't be ridiculously expensive? Thanks

[@gregorkamensek3923]

Hi. I may be a little late with this reply. I would not recommend topping up 6.8 liter scuba tanks with hand pump. Don't get me wrong, it is possible but you will get ripped :) You will put in significant time will not need to go to the fitness jim anymore. I wish there was an easy solution but when it comes to high pressure, there are not easy and certainly not maintenance and care free solutions. I assume you have GK1 pistol and that is why you want the high pressure at all time. With any other gun you can have the start pressure lower and still get high shot count (you can do it with GK1 as well but not at high powers). Until I had this compressor, I just used what was in the botte at the range and afterwards, I topped up the pistol with hand pump if I really wanted the full magazine and max power. Now I use this compressor for this.

[@inspector-tech]

@@gregorkamensek3923 Thanks for the response. For the 6.8l bottle I’m talking about hand pumping it every single time after i take air out of it. So the process is: Initially I get the tank filled up at the scuba shop. Then I take it home and fill up the bottle on my PCP. Say I use 300cc. Then i immediately hand pump 300cc back into the 6.8l tank. Do you think this is feasible or will pumping 300cc still be way too difficult???

[@gregorkamensek3923]

@@inspector-tech It will be more difficult that if you just pump your PCP airgun (300cc) directly because with the PCP, you will start a lower pressure and have the really heavy pumping only at the end, were with the bottle, you will have heavy pumping through the whole pumping session. Also, this procedure that you explain requires more gear and expenses and does not bring any significant benefit. I think that if you use scuba tank, you just use what you have any simply change your PCP to whatever is in the scuba tank and refill the tank at scuba shop when you have a chance. And if you intend to use the pump, there is no need to have a scuba tank as well. To be clear, this is just my recommendation, what you proposed will work as well.

[@inspector-tech]

@@gregorkamensek3923 Thanks Gregor. Appreciate the advice 👍🏾

[@baatf2000]

It work great and good price, but you have to take a super care of it because if it breakdown! You will need god mode to find replacement part… and it would be faster just to buy another.

[@blackwater7183]

It almost look like the Yong Heng without the cover. Is it a clone or rebrand? If it is a clone I wonder how the quality is compared to Yong Heng. Yong Heng seems to be a good budget quality compressor.

[@gregorkamensek3923]

Honestly I personally don't know enough to confirm that this is the same compressor but other people in the comments does seem to claim that it is.

[@hugoharmsen7301]

This compressor is almost the same as yong-heng. I converted it with yong-heng parts. Because it was already defective after 4 uses. I'm not going to talk about customer service

[@Tillice]

Hi there! Recently friend recently bought one of these for airsoft. But were having some issues with the tank pressure not going past ~1000PSI. Do you happen to have any idea of whats up?

[@gregorkamensek3923]

I had similar problem with first unit. They replaced so I did not investigate further what was the cause of the problem.

[@Kliman7]

what is the lifespan of the gk1 cylinder?

[@gregorkamensek3923]

GK1 has a titanium cylinder. The CF wrap is only for aesthetics and does not serve any structural high pressure purpose as with CF bottles. So I don't think they rate the lifespan of their cylinders like they do with materials that have limited life span like CF...

[@drummer57]

Junk makes a good door stop I got a vevor compressor it failed after 3 fills complete junk and customer service stinks

[@gregorkamensek3923]

Sorry to hear that. I am using mine for a while now and still wokring flawlessly... But as I motioned in the video, the first one did fail on me right at the beginning...

[@kmom777]

it doesn't look much different from Tuxing and Yonghang by design same oil block same head block even the cooling pipes are the same. And all of them suffer when you try fill 6L or 10 L large bottles they work for 3-4 fills and then magically stop filling and stay at 200bar or 250 bar and doesn't want to continue further to 300 bar even when there is no leak first time fixed my tuxing with new piston rings and new head gasket and new large piston rings it worked for another 5 fills and then completely fail with no leaks it just stops at 270 bar in the compressor and no air going inside the bottle. So in my opinion only large compressors would do the job filling your air tanks reliably like Hill EC 300 evo however is rated only up to 7L bottles or the double piston/cylinder tuxing compressors they are rated up to 6.8L however terrible customer service with tuxing. And no other options are left to choose from apart from super expensive Daystate large quite compressor which is something like 3500$-4000$ for 1 compressor. Don't know how is possible no European company to not tried making 300 bar affordable compressors

[@gregorkamensek3923]

Yeah, as I mentioned in the video, this compressor is meant to be used for filling PCP rifles directly and not bottles. It is even written in the manual that you should not fill bottles bigger than 3 litres. For filling bottles, I use Coltri compressor (that is the same compressor that Daystate also sale under their brand name and jack up the price :)). There is a reason why those compressors are so expensive. The one way I see the price might come down is if more people starts buying them and there is more competition, but you cannot compare the sales of those with workshop compressors nor can you compare the construction, materials,... that go into them.

[@ThePredator2k]

they were really stingy to send you a model without autostop function. Autostop is a good safety and comfort feature

[@gregorkamensek3923]

Yes, I agree but considering the price range, it is to be expected...

[@ThePredator2k]

@@gregorkamensek3923 the version with autostop cost only 30-40€ more

[@deaczorz]

garbage, bought one from amazon, power unit was busted kept blowing fuses. got a new one. auto shut off didnt work first try. never goes over 250 bar. dies not have the power

[@gregorkamensek3923]

It sounds like you have a different compressor, this one does not have auto shut off...

[@deaczorz]

yea its not that model its the smaller one with out water cooling and 12v /240v, could fed up with chinese junk and now im running a hill compresor and its night and days better.@@gregorkamensek3923

[@redgum1340]

Just junk, buy something better.

[@scinner28]

Why ??4000 euro is better?