GX-E-5K1 Arrives

[PumaCarl]

Two things. Were you bleeding off moisture every 5 to 10 minutes while filling? And if you attach your filter directly like that, and you are not bleeding off constantly while filling the moisture is going to go straight into that and you will be replacing the media a lot. I would suggest at least a foot of hose going straight up to catch the water. The water that collects isn't shooting up like in garden hose it stays in the bottom of the hose because it is all under pressure and just the air bubbles through it, but you have to be bleeding it out. In the eight years that I have been filling my tanks, by doing this, I have never contaminated any of the media in my tuxing gold filter. I just change it every year to do it. If you don't have a compressor with an auto purge feature you have to do it yourself. If you have a normal level of humidity in your area, I can't imagine that you only ended up with a small purge of water at the end of filling a 9L tank from zero. I would strongly suggest that you take that yellow filter apart and check that media for moisture. It should be bone dry.

Edit: I actually use a 1' hose with a small filter which then connects to another hose that goes into the gold filter, all going up, ends up 4' high. The first little filter I change every fill of any size. I use a YH and this sacrificial filter catches any moisture and oil and that could be a factor why zero has made it to the gold filter. It is just a tiny little 1" long 1/2" wide filter, but it catches just about everything it seems, and it is really fast to change out.

 

[JimD]

Thanks Ed. I was searching at choir practice and found the 5k2 which is larger in weight and power usage. The 5k1 still seems to be solidly in the "leave it at home" category.

 

[IKnowNutin]

That looks like a nice compressor for the money! I've got an Omega Supercharger that cost nearly $1k more that will fill an empty 9L in less than 2 hours. Having a fill bottle around is very convenient and a good way to maximize shooting time if time is tight or you're away from the compressor. The Edgun EZ fill triggers are another nice addition for a quick modulated fill however they are pricey, too.

If my Omega dies I would definitely look at one of these.

 

[EPG]

That looks like a nice compressor for the money! I've got an Omega Supercharger that cost nearly $1k more that will fill an empty 9L in less than 2 hours. Having a fill bottle around is very convenient and a good way to maximize shooting time if time is tight or you're away from the compressor. The Edgun EZ fill triggers are another nice addition for a quick modulated fill however they are pricey, too.

If my Omega dies I would definitely look at one of these.

Adding some additional info to this thread…

I bought my 9L used on AGN Classifieds - it’s a “Great White” from airtanksplus.com - it was about a year old.

(Knowing what I know now I’d probably buy a 9L off AliExpress for about $300-$325 and install the regulated Tuxing fillset that an AGN member recommends - it’s super compact and you can regulate the output.

Even though my slightly used tank came with an EZFILL (awesome - topped off 10 rifles yesterday without bleeding between fills), it make me (a tank newbie) a bit nervous when I open the tank valve of a full 4,500psi tank and the line gauge starts shooting up, lol. So, regulated output would be nice - and also great for tethering.

If I didn’t have a 9L and instead had a 6.8L, I would have seriously considered the GX CS4 - $495 delivered from GX Pumps Official store.

Noise Level: For those considering a GX water cooled pump (CS4, 5K1 or 5K2)… I was super impressed with how quiet the 5K1 is - it seemed quieter than my GX CS2s were. Perhaps the two little high speed fans that the CS2 uses are noisier, or perhaps the pitch of the noise just makes it seem louder.

-Ed

 

[EPG]

Two things. Were you bleeding off moisture every 5 to 10 minutes while filling? And if you attach your filter directly like that, and you are not bleeding off constantly while filling the moisture is going to go straight into that and you will be replacing the media a lot. I would suggest at least a foot of hose going straight up to catch the water. The water that collects isn't shooting up like in garden hose it stays in the bottom of the hose because it is all under pressure and just the air bubbles through it, but you have to be bleeding it out. In the eight years that I have been filling my tanks, by doing this, I have never contaminated any of the media in my tuxing gold filter. I just change it every year to do it. If you don't have a compressor with an auto purge feature you have to do it yourself. If you have a normal level of humidity in your area, I can't imagine that you only ended up with a small purge of water at the end of filling a 9L tank from zero. I would strongly suggest that you take that yellow filter apart and check that media for moisture. It should be bone dry.

Edit: I actually use a 1' hose with a small filter which then connects to another hose that goes into the gold filter, all going up, ends up 4' high. The first little filter I change every fill of any size. I use a YH and this sacrificial filter catches any moisture and oil and that could be a factor why zero has made it to the gold filter. It is just a tiny little 1" long 1/2" wide filter, but it catches just about everything it seems, and it is really fast to change out.

Hi PumaCarl,

I was not bleeding off moisture. I did bleed off at 38 minutes (100 bar) - no water came out - perhaps a bit of mist. This was a "full bleed" of the line and I let the compressor sit for 30 minutes. Then I resumed and filled all the way to 320bar without stopping. When I bled the line, water about the size of a silver dollar (smaller than .177 pellet lid) hit the floor. (38 to 177 minutes)

I am familiar with your YH. They throw a massive amount of heat (and noise) compared to this GX-E-5K1 compressor. Also, the 5K1 has an internal filter that removes moisture. My house is air conditioned year round and humidity level is low - especially now in the winter.

Seeking your expertise and adding more info to this thread:

Setup of my Tuxing:

I set up my Tuxing gold as shown in the picture - with the end with the two internal o-rings on the top. I did this because it seemed the other screw on cap end was more "empty" and would serve as a "moisture collector" - if any accumulated.

So, my male disconnect is on the top and my female disconnect is on the bottom.

I can swap it around if you are sure that the end with the o-rings should be on the bottom - please let me know your thoughts...

Additional Info for those interested:

In the pictures below, I show everything that comes with the filter. As I pointed out previously in this thread, I did not use the included hose, I put on a female quick disconnect (10mm - all the Chinese compressor stuff seems to use 10mm threads) and dowty seal (bonded washer).

The little gold filter does NOT come with the big Filter's kit, I just include it for a size comparison - as it was the size filter I used with my GX CS2's when filling air gun cylinders.

I show a close-up of the bonded washer installed (an extra was included with the Tuxing Gold filter). Tuxing pre-installed the male quick disconnect with a bonded washer (I eventually swapped it to the other end for reason mentioned above).

Note that the two screw on ends have a hole in them. You use these to stick in an allen key (or punch) for leverage to tighten/loosen the caps.

Desiccant (silica gel) vs. Molecular Sieve:

The Tuxing Gold filter can be ordered with: (1) Desiccant, (2) Molecular Sieve or (3) both plus carbon.

I chose Molecular Sieve based on the research I did - it seems that it was the media most appropriate for the Use Case that we are trying to achieve - see the red boxes I highlighted regarding effectiveness as temperature increases.


Let me know your thoughts on the filter orientation PumaCarl, and I hope that this information helps AGN members who are contemplating filters for their compressors.

-EPG

 

[PumaCarl]

Hi PumaCarl,

I was not bleeding off moisture. I did bleed off at 38 minutes (100 bar) - no water came out - perhaps a bit of mist. This was a "full bleed" of the line and I let the compressor sit for 30 minutes. Then I resumed and filled all the way to 320bar without stopping. When I bled the line, water about the size of a silver dollar (smaller than .177 pellet lid) hit the floor. (38 to 177 minutes)

I am familiar with your YH. They throw a massive amount of heat (and noise) compared to this GX-E-5K1 compressor. Also, the 5K1 has an internal filter that removes moisture. My house is air conditioned year round and humidity level is low - especially now in the winter.

Seeking your expertise and adding more info to this thread:

Setup of my Tuxing:

I set up my Tuxing gold as shown in the picture - with the end with the two internal o-rings on the top. I did this because it seemed the other screw on cap end was more "empty" and would serve as a "moisture collector" - if any accumulated.

So, my male disconnect is on the top and my female disconnect is on the bottom.

I can swap it around if you are sure that the end with the o-rings should be on the bottom - please let me know your thoughts...

Additional Info for those interested:

In the pictures below, I show everything that comes with the filter. As I pointed out previously in this thread, I did not use the included hose, I put on a female quick disconnect (10mm - all the Chinese compressor stuff seems to use 10mm threads) and dowty seal (bonded washer).

The little gold filter does NOT come with the big Filter's kit, I just include it for a size comparison - as it was the size filter I used with my GX CS2's when filling air gun cylinders.

I show a close-up of the bonded washer installed (an extra was included with the Tuxing Gold filter). Tuxing pre-installed the male quick disconnect with a bonded washer (I eventually swapped it to the other end for reason mentioned above).

Note that the two screw on ends have a hole in them. You use these to stick in an allen key (or punch) for leverage to tighten/loosen the caps.

Desiccant (silica gel) vs. Molecular Sieve:

The Tuxing Gold filter can be ordered with: (1) Desiccant, (2) Molecular Sieve or (3) both plus carbon.

I chose Molecular Sieve based on the research I did - it seems that it was the media most appropriate for the Use Case that we are trying to achieve - see the red boxes I highlighted regarding effectiveness as temperature increases.


Let me know your thoughts on the filter orientation PumaCarl, and I hope that this information helps AGN members who are contemplating filters for their compressors.

-EPG

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If that's all the moisture you got, and it didn't actually go into your your Molecular Sieve Media (MSM), that's great. With my YH, and it's speed and heat and only 40% humidity, my purges are productive, and I do them every 5 minutes or 500psi gain.

That system to hold your MSM is very nice. I made my own with pvc and orings and use the same stuff your using. For all the reasons your chart shows most people do go the MSM route. Carbon is just for breathing air, or smell. Seeing how you are not using different medias in layers, I would think there is no wrong direction to set yours up. Now that I said that, someone will jump in and correct me if I am wrong. Honestly, I see a lot of leverage on that little fitting coming off the compressor and I believe that's an accident waiting to happen. This is just my opinion and it certainly doesn't mean you are wrong, just that I think that you are taking a chance. I would definitely run your short hose to that small filter (on the right in your picture) first and hook that to the big filter. If you mount this stuff vertically, and do a short purge every 10 minutes, your big filter should never see a drop of water. Mine hasn't. I run all my fill lines vertically, even when, especially when, I am using a hand pump, and I have never had water in my guns. Like I said above, I change the little cotton filter, in the little filter every fill, just to play it safe. Sometimes they might have a little oil or be slightly damp, but that's rare, and either way nothing has made it in to my MSM yet. Check your hoses and fittings with your hands as you are filling. If they are cold, they're leaking. You can never see it, and I know with a YH you can never hear it, but the feeling method always works.

There is a lot of ways to skin this cat. Nice compressor!