Gx filter is here

I'm sure it'll unscrew just like the "original".

Lifetime supply of sieve is $40! https://www.amazon.com/gp/aw/d/B07W62755W?psc=1&ref=ppx_pop_mob_b_asin_title Joe told me to change it after something like 40 hours run time.

It takes about a 1/4 cup to refill the cartridge. I change it once a year. After like 10 hours...
I hope so. Gx has a video out. Just shows changing the cartridge. Yeah I have that desiccant for my fast to buy brand filter. I think the gx one will be more suited for the cs2
 
I hope so. Gx has a video out. Just shows changing the cartridge. Yeah I have that desiccant for my fast to buy brand filter. I think the gx one will be more suited for the cs2
The bottom of mine has a circlip securing a 1/4"ish thick cotton pad, empty space for the sieve with another cotton pad that goes on the top, held in when you screw the cartridge back into the PMV.

If I were to get the GX, I would immediately open it up and replace the included carbon with sieve. It's wasted on space on a GX compressor. Maybe useful on a stinky YoungHang. But why torture yourself with that old tech!?
 
The bottom of mine has a circlip securing a 1/4"ish thick cotton pad, empty space for the sieve with another cotton pad that goes on the top, held in when you screw the cartridge back into the PMV.

If I were to get the GX, I would immediately open it up and replace the included carbon with sieve. It's wasted on space on a GX compressor. Maybe useful on a stinky YoungHang. But why torture yourself with that old tech!?
Yeah the charcoal does nothing for us
 
Mine should arrive May 3 or 4 according to Amazon. I asked and the Target Forge guy confirmed that the charcoal was GX's idea. Might help somebody, I guess. There are lots of other filters with it. His recommendation was to leave it out the first time you change the sieve. I wonder how much of a change it will make on a dead head test. Dry air is worth it, regardless but I am curious. I guess I will know soon. It looks like the sieve is in a metal tube. Is there a space between the outer metal pressure barrier and the metal tube with the sieve? That might help water come out so it can be drained instead of going into the sieve. I vent my YH every 5 minutes and get a lot of water out that way. The hot air coming out of the pump can carry a lot more moisture than room temperature high pressure air so it will come out as the air cools. But YH temperatures are significantly higher than GX.
 
Mine should arrive May 3 or 4 according to Amazon. I asked and the Target Forge guy confirmed that the charcoal was GX's idea. Might help somebody, I guess. There are lots of other filters with it. His recommendation was to leave it out the first time you change the sieve. I wonder how much of a change it will make on a dead head test. Dry air is worth it, regardless but I am curious. I guess I will know soon. It looks like the sieve is in a metal tube. Is there a space between the outer metal pressure barrier and the metal tube with the sieve? That might help water come out so it can be drained instead of going into the sieve. I vent my YH every 5 minutes and get a lot of water out that way. The hot air coming out of the pump can carry a lot more moisture than room temperature high pressure air so it will come out as the air cools. But YH temperatures are significantly higher than GX.
It won’t make a huge difference. I have been using one of the big gold sieve filled filters from Amazon. It definitely looks bigger than the gx filter and it only takes my cs2 like 3 minutes to pressurize it to 150-200 bar and start filling my guns. My understanding is the charcoal is just there to remove odors from the air. Not much use in air gunning. More for breathing air which these filters/compressors aren’t going to achieve no matter what gx says.
 
most of the gold filters have a plastic tube which holds the MS or filter material. I have heard that the filter material/MS should not touch the walls of the filter or any metal or it could ruin the metal. Does the filter material inside the new GX filter inside the inter tube touch metal and if so is this a problem? Seems the inter tube does not touch the outside walls but if the inter tube is metal itself is this a problem?
 
Last edited:
The activated charcoal is removing VOCs from the air stream (some of which do have an odor; some do not). Since we are not breathing the air, we technically don't need that function - but I suppose removing VOCs could be good for the o-rings and any plastic used in valve seats. That could be why GX decided to include them in the filter (or maybe just to make us have to replace them faster since it is the desiccant that will drive most of our decisions - who really knows why?).

Each can make their own decision on how to proceed, but I would not say that the activated charcoal is useless to us airgunners - it certainly is less important than the desiccant, but it probably still has value.

In full disclosure, I don't use activated charcoal on my system, mostly because I filter and dry my air before compression with a Shoebox compressor (filter after first stage compression from the shop compressor). I might consider trying it with a small filter though . . .
 
Yes, just to confirm, this new filter does have the pressure maintaining valve.

At approximately 2000psi it opens

20250428_200727.jpg
 
Sorry, do you mean you added a pressure maintaining valve or did you mean the filter already has one built in?
How are you feeling about it so far? Are you leaving the charcoal in or subbing with MS? Is the internal section with the charcoal metal or plastic? If metal, does that present a corrosion problem? Sorry for all the questions , just very interested in this. thanks,
 
Sorry, do you mean you added a pressure maintaining valve or did you mean the filter already has one built in?
How are you feeling about it so far? Are you leaving the charcoal in or subbing with MS? Is the internal section with the charcoal metal or plastic? If metal, does that present a corrosion problem? Sorry for all the questions , just very interested in this. thanks,
I have not opened it, but the spare cartridge in the box is plastic.

The filter has the valve in it. I filled it, but didn't really have much time to go over it as I had to leave for work. It opened right around 2000psi

The filter is definitely has some heft to it and not some light weight. It appears to be well built.
 
it looks like those are molecular sieve beads and are in direct contact with metal, if so that is a huge fail, in short order corrosion will be seen on the metal in contact. Piss poor design, and won't last.
1900 colt says the extra interior piece is plastic on his new one so maybe it's no problem , yours was an older one from Joe B. , correct?
 
I have not opened it, but the spare cartridge in the box is plastic.

The filter has the valve in it. I filled it, but didn't really have much time to go over it as I had to leave for work. It opened right around 2000psi

The filter is definitely has some heft to it and not some light weight. It appears to be well built.
be great if you have time to give us some good pictures and a more through review. I have read some of your past posts and would value your opinion. thanks,
 
  • Like
Reactions: 1900colt
it looks like those are molecular sieve beads and are in direct contact with metal, if so that is a huge fail, in short order corrosion will be seen on the metal in contact. Piss poor design, and won't last.
At least the GX ones are plastic. The spare that was in the box is plastic with charcoal.

In haven't opened the GX filter yet, but no reason to doubt the one inside is the same as the spare.
 
it looks like those are molecular sieve beads and are in direct contact with metal, if so that is a huge fail, in short order corrosion will be seen on the metal in contact. Piss poor design, and won't last.
I believe the issue is that the filters themselves are made out of aluminum. People put sieve in them when they aren’t designed for that and the problem is the contact with the aluminum. The Joe broncata filter he pictured has a sleeve to keep it away from the aluminum and is probably stainless or something 🤷‍♂️that doesn’t cause a problem. That was a 300 dollar filter and very well designed.