Pneumatic Fittings

[maddox10]

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.

[woody]

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.

[maddox10]

Woody, the premisse from Hard Time is this

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 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.

[woody]

reg has a 1/4 BSP inlet

..that was the info I missed.

So he has a Trevor reg without the co2 nut and stem?

[woody]

One of these then ..
It'll screw on the std paintball bottle thread and provide a side outlet.


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.

[Laser]

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

[maddox10]

Probably the CO2 nut. You could use that aquarium bottle in a pinch then.

[woody]

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

[Laser]

pictures of the reg and bottle

[woody]

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.