CO2 Adaptor Question
How much pressure is it rated for?
I was asking MAC1 about an adaptor for his reg and tank setup and pointed me at the AF CO2 adaptor. If my memory serves me correct, CO2 is around 1000 PSI and apparently the adaptor can deal with 1800 PSI, but just how high can you safely go with it?
Which leads into my next question. With a regulator failure, am I correct in my assumption that the usual result is a rise in output pressure? The thought of the adaptor turning into schrapnel next to my face is not very appealing.
All Replies
Viewing 15 replies - 1 through 15 (of 15 total)
So much for the 1800PSI burst disk theory.
I have the CO2 adapter on one of jdsairman’s 62 cu in bottles with a 2100 psi regulator. But I bought a standard Condor valve from Airforce to replace the CO2 valve on the adapter. When checking the two valves side by side it is very obvious that the CO2 valve spring is way weaker than the HPA spring. Even if you regulate the pressure down to less than 1800 psi you will probably be wasting air since the valve will open for longer given the same about of energy being delivered from the hammer strike. It may also lead to air escaping the main valve if the pressure is too high because the spring in the CO2 valve may not be able to hold it closed at higher pressures, but that is just speculation on my part at this time.
That is why I brought this up. Mac1 is selling the CO2 adaptor for HPA and I just did not feel right about that. What if the burst disk failed?
AF did answer Comet, it is just not what you wanted to hear. They did not test it for use with HPA. It is rated up to 1800 PSI. CO2 is normally a lot lower pressure than that.
From what I am reading in this little thread, it is not uncommon for the burst disk to go on these things when used for HPA. Pehaps investment in an adaptor rated for HPA might not be an unwise investment.
I always recommend CO2 fittings only be used on CO2.
High pressure air is nothing to take lightly.
Use only rated fittings for HPA.
Nice way for them to not answer your question. Since we have a member using a 2100 PSI regulated bottle on his adapter, we would have to assume, and yes I know what that means, that the burst disk is higher than a 1.8K. I am well aware of this, as I have blown a couple of 1.8K disks when adjusting a regulator on a paintball HPA tank. When I exceeded the 1800 PSI mark while filling, the disk did it’s job and blew. I adjusted the reg down a bit, and the new one held, output was right around 1650 PSI.
Interesting thank you
Here is an e-mail I sent to the Air-Force:
Sent: Saturday, March 23, 2013 11:50 AM
To: staff@airforceairguns.com
Subject: CO2 adaptor
Hi, some of my friends and I were wondering what PSI rated burst disk you use in the CO2 adaptor? Your answer will help settle this argument for us. Thank Jim
And the response:
Jim,
Thank you for your inquiry. The CO2 Adaptor was designed for use with a standard CO2 paintball tank. We have not tested the CO2 Adaptor attached directly to a HPA air tank, however, if it’s regulated at an output of 1800psi or less, it could work. Please contact us should you have any further questions. We appreciate your interest in our products!
Sincerely,
Rachel Gonzales
Auto-Numatic Corp.
Retail Products Division
AirForce Airguns 1-877-247-4867
BKL Technologies 1-877-255-2001
AirForce International 1-817-247-4867
PO Box 2478
Fort Worth, TX 76113
Fax 817-451-1613
My guess is 3000PSI, this guess is because my CO2 tank has a burst disk rated at 3000PSI. ❓ ❓ ❓
so does the co2 adapter have a burst disk for 1.8k? I was hoping to put that on a standard talon tank. Or do i have to buy a new valve?
The spring/hammer/valve setup on my SS overcomes valve lock at around 1800 PSI. That is why I want to regulate it at that pressure. I will get geegobs of shots with a 3000 PSI fill. 1600 PSI would work fine also.
I use 48ci HPA tank with 2100 psi reg and co2 adapter. It’s just working fine. I got about 100 shots at 900psi with 18.13jsb, tack driver of my talon ss with 24″ barrel.
I tested it up to 3300 psi, no problem when I tried my 4500 psi CF tank with 3300 psi reg.
Very solid piece.
I currently use a 1600 PSI bottle on my CO2 adapter, and have had no issues with that. However, previously when adjusting a regulator in a paintball bottle, I forgot to swap out the 1.8K disk to a 5K disk when moving the output up to around 1800-1900 PSI. This blew the disk, and I was informed the disks can vary 100-200 PSI, scared the crap out of me when it went. I settled on a little lower pressure, just because I had some 1.8K disk spares, and all worked out fine. I would guess you should be able to run 160-1700 PSI, and the disk should hold, if you get too close it will blow, but that will also let you know where the “safety switch” of the disk is. I noticed on my 1600 PSI tank, it has 5K disks in it, if you check most 3K tanks, you will generally find a 5K burst disk, I assume this is because a 3K disk would burst at fill pressure. If it helps any, my Talon SS with a 12″ barrel shot an average of 723 FPS in 22 cal, with a SD of only 1.88 FPS. That was with 14.3 gr CPHP’s and across 10 shots. The second best part was I could get 60 or 70 shots out of a 13 cu in tank before I hit the regulator. Hope this helps you decide which way to go,I personally think the adapter can go higher than 1800 PSI, as it’s a solid thick piece, but since I have not tried to push one beyond that, someone else may chime in.
Casey
That is a good thing. That is the pressure I would be running at also.
The CO2 adapter also has a burst disk in it, I don’t know what the rating is, but for CO2 bottles the disk is normally a 1.8K. If this is also the case for the adapter, then we would assume any bottle with a regulator set above that would blow the disk. Therefore if all of the above is true, if a regulator set below that fails, then as the pressure rises above the CO2 adapter’s burst disk rating, then it should blow, protecting the adapter, and the user.
Casey
Viewing 15 replies - 1 through 15 (of 15 total)
- You must be logged in to reply to this topic.
If the disc fails it would leak out the air. Not a big deal since that is what it is designed to do. You would then have to replace the burst disc. Even ones rated for HPA occasionally burst from regular use.
Do you know if Mac1 is replacing the burst discs (and return spring) with one rated for HPA? They are wicked EASY to replace. 😉