Questioning the safety of inline water filters

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glr59

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Sep 23, 2019
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Midlothian, VA USA
So I have a gx cs4 compressor on the way. I've spent way to much time reading about adding an inline water filter between the compressor and gun/tank. My question is the safety of these amazon filters that have been mentioned. I don't see pressure ratings for the filters. If the compressor is capable of building to 5800psi can these inline filters handle the pressure? I'm concerned with the filter and fittings they come with. Should I be concerned and what are the current go to inline filters for the cs4 that are safe?

Thanks
Jerry L.
 
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glr59 said:
So I have a gx cs4 compressor on the way. I've spent way to much time reading about adding an inline water filter between the compressor and gun/tank. My question is the safety of these amazon filters that have been mentioned. I don't see pressure ratings for the filters. If the compressor is capable of building to 5800psi can these inline filters handle the pressure? I'm concerned with the filter and fittings they come with. Should I be concerned and what are the current go to inline filters for the cs4 that are safe?

Thanks
Jerry L.
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The filter assembly is under no more pressure than your whips or tank are.

Something else (like your burst disk) will fail before the inline filter will
 
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Most of the purple filters ive seen come with a 3k burst disc. Theyre huge and take forever to fill and I had little faith in mine for the amount of energy it stored .... So i put it on my compressor intake till i just got a compressor that used the same molecular seive/carbon/felt Lego filters as the pool purple tube and into the scrap parts pile it went.
 
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PasadenaMike said:
The only thing you’ll be filling a billion psi is a Huben and the tanks aren’t huge. I’m sure you’ll be fine not having an in line filter. if you’re filling an scba tank then you’ll be fine up to 4500
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lol “billion psi”
it does feel like like a billion psi when manually pumping from 4500-5000
 
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I would be concerned about what Amazon actually ships to you. Their suppliers and vendors change by the minute, and the amount of knock off/look alikes, and the returns, etc.

I bought an Alpha. It was expensive. But it works well and I don't worry about it, and it would have been that much had I cobbled together a copy. I had a few questions after I bought it and spoke with Joe and he walked me through everything. If I have a problem I trust he will take care of it.

I see so many folks here drop $2000 on an airgun, $800 on optic, $300 for a bipod, and a bunch more on crapp that just like is cool but serves no actual purpose, and then balk at a $400 filter that would serve every PCP and tank they have.
 
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Chris_K said:
I would be concerned about what Amazon actually ships to you. Their suppliers and vendors change by the minute, and the amount of knock off/look alikes, and the returns, etc.

I bought an Alpha. It was expensive. But it works well and I don't worry about it, and it would have been that much had I cobbled together a copy. I had a few questions after I bought it and spoke with Joe and he walked me through everything. If I have a problem I trust he will take care of it.

I see so many folks here drop $2000 on an airgun, $800 on optic, $300 for a bipod, and a bunch more on crapp that just like is cool but serves no actual purpose, and then balk at a $400 filter that would serve every PCP and tank they have.
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Alpha as in alpha carette? I tracked down who broncato was getting his carette compressor from, It lead me to tuxing. I later learned that the supplier making their carbon bottles supplies fx too. 😂.
 
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I'm interested… I had posted a couple of questions about this earlier. No one talking about how they manage to get their gk1 to 5000 psi using water separators that are rated to 4500. Has me thinking either people aren't so worried about the dry air for that small cylinder or they're just not worrying about the 500 psi overfill but not wanting to talk about it here.

I found a small unit for sale from Wes at airgun archery fun that's rated to 350 bar - but this is just a small chamber to hold some filters not a large complex unit.
 
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Back_Roads said:
Some of the little filters have burst disc, so I would think either a burst disc or an oring would fail before anything catastrophic would happen. I had the same thoughts as I fill a GK1 with mine, but stop at 300 bar.
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I had mostly been filling mine directly to 5000 and just relying on the Seperator built into the CS4, but now that I got the small in-line filter from Wes I'm using that just for the heck of it.

I had tried using a larger unit rated to 4500 psi with desiccant beads and all of that but there was no sign of any moisture being taken up by that filter unit so I stopped using it since its volume was about the same as the air tank on the gun and it doubled fill times. Even after topping off a pony bottle on days when it was like 90% humidity, absolutely no moisture in any of the filter units or anything. Kind of a shocker
 
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Regarding all the hype over Chinesium safety issues....probably everyone of the fittings in your airline are sourced out of China, so chill out over the "nation of origin" It's a bit silly. Is it going to be precisely machined? Certainly not. But odds are you also aren't going to be the first one on this forum to have a oil/water filter purchased off of Amazon blow up.

I'd be far more concerned about having a whip randomly detach or fail and slap me in the face than some massive aluminum cylinder exploding.
 
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I don't fill my PCPs much if any past 250 bar. It's hard to do filling from a bottle which is my strong preference. I've purchased moisture filters and a fill extension from Amazon and a few other things. The only issue I've had is an occasional O ring failure. I fill my bottle to an indicated 300 bar but when the air cools I am lower and as I fill guns it falls further, of course.
 
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