CO2 10oz refill, 2025 revisited

Woodfin · 05-27-2025, 10:22 PM

Today I visited four welding supply stores. None of them will refill the 10-oz CO2 cylinders. In addition, I asked about buying a large cylinder so I can do my own refills. All stores said they only exchange if you already own the cylinder. I asked about buying a new cylinder, and was told $300.00 - $400.00

So my question is, what is the 2025 solution to this dilemma?

FED 387 · 05-27-2025, 10:55 PM

try a paint ball place

Kevin Panzino · 05-28-2025, 07:26 AM

Quote:

Originally Posted by FED 387

try a paint ball place

Yep. You can also look around for an air rifle shooting club/team.

Furthermore, nitrogen or argon also work just fine.

Kp

Rich Biebel · 05-28-2025, 08:15 AM

Buy a 20lb bottle with a dip tube
Buy 2 ball valves and braided steel lines and the correct fittings to connect to the large bottle and the 10 oz bottle
Go to you tube and watch a video or 2 on how to fill a bottle
I made up this setup and could fill a bottle very easily and quickly without using a scale
The parent bottle pressure is not high enough to over pressure the 10 oz bottle and quickly fills it. You can get many refills out of the big bottle.
I watched my pressure gauge even on the hottest day and the pressure never was high enough to blow the safety relief valve
I had 3 bottles and could change one in a couple minutes.
The better solution is a K&R on board air compressor
I gave my refill setup to my friend and when I needed to use an air shifter bought the K&R and there is no need for bottle refills....

Mike Pearson · 05-28-2025, 10:15 AM

Just take the regulator off and use compressed air. I pump my air bottle up to 135 psi with mt Ryobi inflator. works perfectly.

cordoba13 · 05-28-2025, 05:12 PM

I bought a 40 lb bottle (without siphon tube) and adapter fitting from welding supply store. made a stand to put bottle upside down, attach 10 oz to big bottle open valve done. you can use a fish scale to wight bottle. if you fill it to much Valve will blow-off welding shop has valves
gary

tomcraig · 05-28-2025, 08:10 PM

I use a place that refills fire extinguishers. In and out in about 5 minutes. they also refill scuba tanks and soda stream bottles. look them up.

05-27-2025, 10:22 PM	#1
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 518 Likes: 8 Liked 223 Times in 90 Posts	CO2 10oz refill, 2025 revisited Today I visited four welding supply stores. None of them will refill the 10-oz CO2 cylinders. In addition, I asked about buying a large cylinder so I can do my own refills. All stores said they only exchange if you already own the cylinder. I asked about buying a new cylinder, and was told $300.00 - $400.00 So my question is, what is the 2025 solution to this dilemma?

05-27-2025, 10:55 PM	#2
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,404 Likes: 486 Liked 323 Times in 173 Posts	Re: CO2 10oz refill, 2025 revisited try a paint ball place

05-28-2025, 08:15 AM	#4
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: CO2 10oz refill, 2025 revisited Buy a 20lb bottle with a dip tube Buy 2 ball valves and braided steel lines and the correct fittings to connect to the large bottle and the 10 oz bottle Go to you tube and watch a video or 2 on how to fill a bottle I made up this setup and could fill a bottle very easily and quickly without using a scale The parent bottle pressure is not high enough to over pressure the 10 oz bottle and quickly fills it. You can get many refills out of the big bottle. I watched my pressure gauge even on the hottest day and the pressure never was high enough to blow the safety relief valve I had 3 bottles and could change one in a couple minutes. The better solution is a K&R on board air compressor I gave my refill setup to my friend and when I needed to use an air shifter bought the K&R and there is no need for bottle refills.... __________________ Rich Biebel S/C 1479 Stock 147R

05-28-2025, 10:15 AM	#5
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,425 Likes: 602 Liked 1,890 Times in 566 Posts	Re: CO2 10oz refill, 2025 revisited Just take the regulator off and use compressed air. I pump my air bottle up to 135 psi with mt Ryobi inflator. works perfectly. __________________ Mike Pearson 2485 SS

05-28-2025, 05:12 PM	#6
cordoba13 Junior Member Join Date: Aug 2023 Location: westerly RI Posts: 13 Likes: 1 Liked 8 Times in 5 Posts	Re: CO2 10oz refill, 2025 revisited I bought a 40 lb bottle (without siphon tube) and adapter fitting from welding supply store. made a stand to put bottle upside down, attach 10 oz to big bottle open valve done. you can use a fish scale to wight bottle. if you fill it to much Valve will blow-off welding shop has valves gary

05-28-2025, 08:10 PM	#7
tomcraig Junior Member Join Date: Sep 2013 Posts: 17 Likes: 0 Liked 0 Times in 0 Posts	Re: CO2 10oz refill, 2025 revisited I use a place that refills fire extinguishers. In and out in about 5 minutes. they also refill scuba tanks and soda stream bottles. look them up.