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Hi,
I have got a 20oz C02 bottle http://www.amazon.co.uk/approved-20oz-C ... 083&sr=8-2
and a Trev reg that came today but the 2 wont screw together :(
I dont know the fitting on the bottle but the reg has a 1/4 BSP inlet.
How would I be able to change the pin valve to something that would screw into the bottle and has a 1/4 BSP outlet???
The bottle uses an US thread that is so close to 1/2 bsp it doesn't matter.
You need another valve in between the Trevor and the bottle. That's the disadvantage of a pin-valve.
Therefor, you need a ballvalve with a 1/2 bsp female inlet, but also with a pin-pusher.
You can buy a seperate on/off valve for your bottle. The thread stays the same.
Or better, go to a local paintball shop, and let them change it.
ok I try a ball valve as that will count as an on/off valve so... where can I get a ball valve with a 1/2BSP with pin pusher inlet and a 1/4BSP outlet?
Not, I guess you'll have to build it yourself, or pay top £££ for a machinist to make it for you.
I suggest replacing the pin valve with an on/off valve. Less hassle, safer and lighter.
what kind of thread would I need if I unscrewed the whole pin valve and put an on/off valve in?
The on/off valve should have the same tread as the pin valve. It's a rather standard thing.
You can get these http://www.ebay.co.uk/itm/NEW-PAINTBALL ... 27b1369bba
Problem is that you still have issues with co2 fitting and the flow of the valve isnt that good
The flow of any bottle-valve ain't something to cheer about. That is why buffertanks or, old school liquid CO2 injection is used.
Actually an on/off valve for a filling kit would do the job with a pin valve:Quote:
Originally Posted by maddox10
http://www.rap4uk.com/Air-Tank-on-off-V ... p/1280.htm
Bear in mind if you take a pin valve bottle to an event then you will need your own filling kit look on ebay they're about £20
Although i would agree with Mario just replace it with an on/off valve.
would these filling lead attatch to the big bottle at events: http://www.ebay.co.uk/itm/New-Deluxe-Du ... 27bdffde5b
Should do but maybe Mario could advise if there's any significance on the US CGA 320 description. Not sure if there is a us and uk thread.Quote:
Originally Posted by Hard Time
For that pricetag you can't misbuy.
Worst thing happening is that you have to replace the connecting nut to the CO2 tank.
The pin valve/paintball tank connector is international.
thinking about the price of stuff I may use my 20 oz tank as a buffer and get a 1kg/600g fire extinguisher as the main tank.
What kind of fittings do fire extinguishers have as there output?
20oz=600gram. Is almost 1 liter of volume in the bottle. How big a ram are you planning to use?
Straight from Woodies CO2 info site.
Quote:
Throughout the world, carbon dioxide cylinder valves have a special thread. In Europe, Africa and much of Australasia, the thread conforms to British Standard 341 Part 1 (.860 in x 1/14 in W) or the direct European equivalent (DIN 477, SN 219505, etc). These threads are in effect interchangeable.
British BS341 No. 8 European DIN 477 No. 6 and SN 219505 Type 7
French NF E 29-650 Type C Australian AS2473 Type 30
America CGA 320 and Japanese JIS B 8246 CO2 threads are different and are not compatible with each other nor with British/European CO2 threads).
http://www.teamonslaught.fsnet.co.uk/gas%20thread.gif
63mm bore 75mm stroke
the ram volume is 0.23l, so a 1l fire extinguisher would do nicely all be it a bit ott. if i were you i'd use the 600g co2 tank for the main tank and either a 12oz bottle for buffer or a small dry powder extinguisher
I could swap the pin valve for the extinguisher fitting.
The car-powder extinguisher is a tad oversized. A 12Oz paintball bottle overly heavy and small for the application.
Also, a .23L volume ram uses 2.3 liters of gas at 140 psi/10bar(max working pressure for mainstream pneumatics, and I would advocate using 100-110 psi/8 bar).
A 600 gram(20oz) bottle contains 300 liters of gas. That should give you 80 useable shots.
With a 12oz, that still is 40 shots +.
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Swapping the pin valve with a normal CO2 valve ain't that easy, as the foot of a normal CO2 valve is or 4/3 BSPT, or M25*2, The paintball bottle uses 5/8 UNF as neck tread.
Nothing a lathe can't solve tough.
The valve off an Aquarium co2 cylinder has a smaller thread and thus requires less machining.[attachment=0:2x8j5ngw]valve.JPG[/attachment:2x8j5ngw]
http://www.ebay.co.uk/itm/UP-CO2-Aquari ... 2565deb5b9
would this bottle screw directly onto the regulator?
No, the bottle thread will be the one I have shown, the .85 big 14 tpi. Or else the US GCA320. Not even close to 1/4 BSP.
You still need a connecting nut from 1/4 BSP to whatever on your bottle. The easiest to make (for somebody with a lathe of a good drill press and the tap-set) is a 1/2 bsp female to 1/4 BSP male. So, a on/off valve on the 20oz tank, and you're in business.
Sleightly less easy, as it requires a shop that can crimp hydraulic connectors, is to use the CO2 threaded normal valve, and the hose/connector of a fire-extinguisher. Just crimp on the 1/4 BSP male.
Mario ...I'm confused by your thread references.
IMO ...The Trev reg should screw directly onto the ebay aquarium bottle.
EDIT ..I'm assuming the Trevor reg has a std CO2 nut.
Woody, the premisse from Hard Time is this
Quote:
Originally Posted by Hard Time
The mistake I'm making is that I tought it was a 1/4 BSP female.
On the treads. Direct reference to your pages I'm afraid.
2 kinds of Thread on industrial CO2 bottles, The European/UK intermixing one, the 14 TPI that is bigger in diameter than 1/2 bsp (5/8?), and the US CGA320 tread.
And then a few others for smaller applications as paintball and sodastream.
..that was the info I missed.Quote:
reg has a 1/4 BSP inlet
So he has a Trevor reg without the co2 nut and stem?
One of these then ..
It'll screw on the std paintball bottle thread and provide a side outlet.
http://www.ff-paintball.com/u_file/p...2055974397.jpg
with a 1/8 bsp - 1/4 bsp nipple....like the one shown ..between the paintball adaptor and the Trevor reg.
Note:-The thread in the SIDE of the paintball adaptor is probably npt and will need a bsp tap run down it.
http://lh3.googleusercontent.com/pub...JUFvjQz3PVMX5g
ok sorry for your confusion
The reg is a one that trev has sent to me and has no changes.
I miss typed what the inlet size was and it is a 3/4 BSP inlet I think
The thread diametre on the nut is just over 3/4 if that helps
Probably the CO2 nut. You could use that aquarium bottle in a pinch then.
The thread in the big brass nut is a special/ bastard thread .... Mario posted a pic from my site giving the dims of this.
IT ISN'T BSP.
http://www.teamonslaught.fsnet.co.uk/co2_info.htm
OK you have a std European co2 nut on the reg ... and an American / paintball thread .
I'd suggest perhaps getting the ASA paintball adaptor with the side entry... then hacksaw a thread off a fire extinguisher and tap the middle bsp.... you could do this yourself ..or ask Mario ..or I could at a pinch be persuaded.
You then you just need a nipple between the two.
Adapting the Trevor with a ballvalve on the inlet side. But an on/off bottle valve is cheaper, lighter and compacter.
Add a paintball threaded pin-nut and you're set to go.