TUXING 4500PSI PCP Air Compressor Review

Got it. I have a small omega bottle that I have to fill from empty so I’m kinda in some weird space. May get access to a compressed nitrogen tank and fill it to 2K, then have It act like the PMV as you stated. Compressed air is hard to come by in a landlocked state (NM) so I am trying to become compressed air independent. My manual hill pump is becoming a PIA to fill my veteran mini.
 
Ordered up this compressor on Christmas and said it would ship from the US. Well it didn't it shipped from China and it arrived today. The packaging was beat up, but the compressor look great! Set it up and ran it for 10 minutes on a "Break in" period then filled my 30 minute tank in about 3-5 minutes. Definitely need to put in the tee and plug like like others have said to get a true pressure reading. My tank says about 200 PSI below the gauge on the compressor. Tomorrow I will fill another bottle then change the oil.

Tony P.

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Well, I finally got my compressor up and running, but I ran into a couple problems. Full disclosure these problems were totally completely self created.

I returned the tee and plug from Amazon and ordered the tee and plug from Titan Fittings. As stated top notch product, quick shipping, and very reasonably priced.

The issue started when I went to install the tee and plug. I couldn't figure out how to get the gauge line off the gauge and input to the first gold filter (yes I know now how easy it is please save you slings and arrows, I beat myself up enough). I just started pulling parts off with no coherent plan and ended up down a rabbit hole. I pulled the high pressure line off of the gold filter block, and when I went to put it back together I cross threaded the connection from the high pressure line to the filter block. Needless to say this was bad and killed the compressor. If only I had called Brian, this could have all been prevented.

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Now the good news. I contacted Tuxing and they replied within minutes (time change considered). I told them what I had done and the parts needed to fix my mistake. They were very helpful! I had to replace the filter block on the right filter, the fitting to attach the high pressure line to the right filter block, and the gauge hose. They had the parts at my door in less than a week for $45. I thought that was very reasonable all things considered. The other plus to my mistake is having the knowledge that should I need parts or service in the future for maintenance or what have you, this bodes well.

Okay, got the parts and with Brain's help proceeded to put everything back together. Did a quick test with the plug to make sure it was holding pressure (and to make sure I didn't screw anything else up), and then proceeded to fill my new Acecare tank (review coming).

I was able to fill my 6.8L tank, but it took almost an 1 hour and 15 minutes. And it struggled to get to the 300 Bar. Brain advised that the fill should have only taken about 45 minutes, so obviously something was still wrong somewhere. I still had a leak. Small enough to not be able to hear it, but for sure there.

Did another test with the plug and discovered and that there was a leak at the point where the hose attached to the back of the gauge. I couldn't hear it, and it actually didn't even really bubble when misted with water. As soon as I touched though it hissed nice and loud. It was not a good seal and when the compressor vibrated it allowed air escape best I can tell.

Now keep in mind this is the replacement hose Tuxing had sent me. I asked for a replacement hose as I feared I had kinked my original hose and possibly ruined it. I tried everything to get the slip nut on the replacement hose and gauge to seal, but it would not. At first I though I was missing an o ring, which it was. So I put an o ring in. Not sure it was right o ring, but I just picked one out of my replacements that came with the compressor. You see the hose that came on the compressor and the replacement were different. The original hose had a solid one piece nut, while the replacement hose had a slip style nut. You can see in the pic below that the new hose appears to be missing an o ring. Yup, tried that. Also included images of the back of the gauge for reference. Looks like it should work with the slip nut and o ring, right? Well no matter how tight I made it, it still leaked. I figured I'd try putting the original hose back on, and sure enough, sealed right up like a drum. Not sure if my gauge is different than the ones they use with the newer hose or what the deal is, but its sealed now so I'm sticking with it.

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I also had an issue with the water tank leaking a little where the hose leaves the water tank to the pump. Contacted Tuxing again and again, responded right away. Their advice was to put some sealing tape around the stem coming off the water tank. I did that, and also put a zip tie on. But it was still dripping from where you see the red box. Contacted Tuxing again. Their advice was to apply more sealing tape. So I applied more sealing tape, some liquid silicone, and a zip tie. Finally got it to stop dripping. It's not pretty, but it works. I was worried about it dripping because it was dripping right onto the cooling fan connections and I was worried about the fans shorting out. Tuxing did finally admit that they were having some issue with the reservoir leaking on some units, but they weren't sure why. Guess I got one of the leaky ones.

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Okay, now everything is good to go. I was able to top off my 6.8L bottle from about 200-300 bar in about 12 minutes, and I was able to fill up my Brocock Sniper XR (250BAR 480CC bottle) from empty in about 7 minutes. My temps were similar to Brain. Compressor displayed a temp of about 133 F max. I have noticed that even with the tee plumbed direct to the gauge, my compressor gauge and bottle gauge don't match. The compressor gauge is showing several hundred PSI low when the bottle is for sure filled. The compressor will actually overfill the tank. The tank is an Acecare 6.8L 300 Bar bottle. I set the auto shutoff on the compressor at 30MPA which should be 300 bar, or 4300+PSI. The compressor overfilled the bottle in an attempt to reach it's 30MPA cutoff. It actually blew the pressure disk in the relief valve on the tank (easy fix). I also noticed that the 300 BAR over pressure relief valve on the compressor (on the far side the second filter block) was hissing. So the compressor was fur sure at 300BAR, but gauge said it hadn't reached bar yet. Am I missing something, both the compressor relief valve and tank relief valve are telling me I'm at 300 bar even if the compressor gauge doesn't tell me that? I guess it's just gauge error? I guess it's not a big deal at the end of the day, just look at what the compressor gauge is at when the tank is full and make a note of that reading as 300BAR. Still learning and trying to figure all this out.

BTW I also understand air will contract as it cools and how this plays into everything.

I have about 3 hours on the compressor now and will do an oil change before I use it again now that it's good and broken in. I think I said it already, but I'm using the Filtertechs.com Tropics which is a Chemlube 800 equivalent.

I'm happy with the compressor. It's been a little learning curve for me. Downside to all the Chinese stuff is that the instructions are non existent so it's pretty much learn as you go and rely on people with 1st hand knowledge. Brain has been super helpful. As I told him I'm sure I would have figured it out eventually, but he for sure saved me lots of time and probably money in further errors. Another plus is that the Tuxing customer service has been great, and I have confidence that they will be there in the future should I need them. I would for sure buy again, and recommend to others.
 
I finished the “T” mod yesterday and it is running great. The gauge was off by 300 from my tank gauge before the mod now it is off 100. I also had the leak on water tank (Same spot too) and a little silicone did the trick. I only have an hour on mine, but everything is working great. I love the auto shutoff!! Now I Need to get out and shoot more so I can use the compressor....

Tony P
 
iflyskyhigh I feel what you went thru for sure. I got mine and had a few problems to get fixed. The first one was the pressure gauge was leaking at the hose connection and upon removal seen that the oring was cut in two pieces so ok easy fix replaced the oring fix that. Then the water leak started same area as yours but mine was on the seam around the mounting ear on the tank. Was finally able to find the exact spot and did some plastic welding and got that fixed had small pin hole at seam that had not got sealed. Then went to change the fliter siez out and they had the two switched around the left one had the tube and the other and roll filter in it so got them switched and all was good changed the oil out to the good high pressure compressor oil and put Redlne water wetter in the cooling system rerounted some of the hoses and installed a hour meter and now all is good. Got a Shoebox Freedon 8 with the speedup gear and belt that I had been using for 4 years. It has been good but wanted something that filled quicker. The shoebox took about 1.5 hours to go from 3500 psi to 4500psi on my Great white tanks and now it takes about 10-11 minutes to fill which I love. Got about 4 hours on it and all is good time will tell but I love it right now for sure. Also one last thing the pressure had needle bent to low and was not making good contact so had to drill small hole to bend the needle up a tad and that some to have fixed the auto cut offf now as it cuts off right on the correct pressure. I also did the gauge line move the Brian told me he did as well which did help the reading no doubt on mine.
 
I finished the “T” mod yesterday and it is running great. The gauge was off by 300 from my tank gauge before the mod now it is off 100. I also had the leak on water tank (Same spot too) and a little silicone did the trick. I only have an hour on mine, but everything is working great. I love the auto shutoff!! Now I Need to get out and shoot more so I can use the compressor....

Tony P

I need to verify how much mine is off. I'm not sure, but I know it's still off quite a bit, even with the Tee installed. Like I said, I'm inclined to believe the bottle vs the gauge on the compressor. Because the gauge on the bottle was reading 31+ MPa or 310+ Bar, which is 4500PSI+. And the blow out disk on the bottle did in fact go which makes sense since it's rated for 30MPa / 300 Bar. So a couple things learned, the compressor will in fact put out 4500+PSI, and the gauge is not very accurate. For some reason I thought these carbon fiber bottles were good to 4500PSI, but obviously they state right on the bottle that they are meant for 300BAR, which is not 4500PSI. There is a lot of different terminology thrown around when dealing with all this stuff. I understand some it gets lost in translation, and when dealing with different forms of measurement they aren't always equivalent. But do the American made bottles actually go to 4500PSI? Further more, looking at the gauge on the compressor I think the red part of the indications starts below 4500PSI, AND the safety relief valve on the other side of the gold filters gives way at 300BAR, so even though this compressor is rated to 4500PSI and can do it, it's not really meant too? Still all a little confusing. Sorry, I should clarify. The blow disk on the DIN filling station that attaches to the valve on the bottle went. There is also a blow out disk on the valve that keeps the air in the tank. It remained in tact.

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iflyskyhigh I feel what you went thru for sure. I got mine and had a few problems to get fixed. The first one was the pressure gauge was leaking at the hose connection and upon removal seen that the oring was cut in two pieces so ok easy fix replaced the oring fix that. Then the water leak started same area as yours but mine was on the seam around the mounting ear on the tank. Was finally able to find the exact spot and did some plastic welding and got that fixed had small pin hole at seam that had not got sealed. Then went to change the fliter siez out and they had the two switched around the left one had the tube and the other and roll filter in it so got them switched and all was good changed the oil out to the good high pressure compressor oil and put Redlne water wetter in the cooling system rerounted some of the hoses and installed a hour meter and now all is good. Got a Shoebox Freedon 8 with the speedup gear and belt that I had been using for 4 years. It has been good but wanted something that filled quicker. The shoebox took about 1.5 hours to go from 3500 psi to 4500psi on my Great white tanks and now it takes about 10-11 minutes to fill which I love. Got about 4 hours on it and all is good time will tell but I love it right now for sure. Also one last thing the pressure had needle bent to low and was not making good contact so had to drill small hole to bend the needle up a tad and that some to have fixed the auto cut offf now as it cuts off right on the correct pressure. I also did the gauge line move the Brian told me he did as well which did help the reading no doubt on mine.

I couldn't even get the gauge line to seal EVEN with a brand new o ring. I tried varying degrees of force on the nut, but not matter how loose or how tight it was it leaked.

I'm pretty sure my leak was at that same seem. I just couldn't pin point it. I'm guessing that was the tanks were manufactured there was a defect in the mold and the seems didn't get completely sealed. Still not sure exactly where the leak was, but the silicone I applied did fix it. Doesn't look pretty but it works. I'm a little miffed about the water leak. It appears they know there is an issue. They should have offered to send a replacement tank, but despite me hinting around about it and more less asking them to the didn't offer.

My filters were also in the wrong order. I messaged with Brian about it and he advised the order they are supposed to be in. I still need to swap them around and change out to completely 13x sieve in the final filter. I just haven't had a chance to do it yet. Been working too much (which is rare for me). I need to do the initial oil change as well. I will do it all before I use the compressor again. Also was trying to deal with a mystery leaky foster fitting on my Brocock this week, so I didn't have a chance to play with the compressor in what little time I had.
 
I see that they are no longer available on amazon. Only the non internal cooled one by another listed seller. However, they are easily available from the tx store on Aliexpress. 

https://www.aliexpress.com/item/1005001515056880.html?gps-id=pcStoreJustForYou&scm=1007.23125.137358.0&scm_id=1007.23125.137358.0&scm-url=1007.23125.137358.0&pvid=f429dd17-f80a-4f0e-8410-5520041b470f&spm=a2g0o.store_home.smartJustForYo



Knife

I got mine on AliExpress. It was available on Amazon when I bought mine but it was still cheaper through AliExpress. 


Just checked the Tuxing Aliexpress store and it’s showing an “auto purge” version???? That’s new
 
So far got about 8 hrs on it and all is good. Fills to 4500psi meter on compressor reads 4500 as well as the bottle gauge reads 4500 psi so all is good for sure more time will tell but its nice filling a Great White tanks from 3000psi to 4500 psi in 15 minutes. My Shoebox took about an 1 hour 40 minute to do the same. Bad thing is I find myself shooting alot more now but I will take that all day long.
 
That is what I though his message was also.

Thanks for the information.

I ran Shoeboxes for years, but my last one broke, replaced it 5 months ago with a disposable Hatsan Spark to give me time to decide on a better compressor. The AV4500 is said in some reviews to give off a oil smell, this compressor seems to have alleviated that problem. Also it is a better build for the buck.

Thanks again,

Roachcreek
 
Tuxing does have a auto purge unit it utilizes a seperate cooling water bucket or there is a model with a smaller cooling setup like AV4500. I have 2 of the big compressors in my shop and they have been doing very well. I have 58 hrs on the first and 27 on the second and both have been operating very well. In fact I have been talking to the factory for a bit and as of Thursday we are official Tuxing factory authorized sales, service and parts for here in the USA. We have parts and supplies coming in Tuesday for inventory and will get all the product and parts catalogs on the website by Tuesday. For folks who have any questions on Tuxing systems give me call will be happy to answer questions. Will also keep up with this thread for folks with questions.
 
Does this mean we can order the unit which has been the subject of this thread, through you and have your shop prep it with your improvements, then ship to us.

For those who are not mechanically inclined, does service mean your shop will be repairing/rebuilding?

This is ground breaking news, congratulations and good luck.

Regards,

Roachcreek