Heavyweight regulator

[jonny]

output from the valve or the bottle?

[Laser]

The thing ontop of the bottle, where the nozzle connects to

[jonny]

http://www.teamonslaught.fsnet.co.uk/co2_info.htm

[Laser]

where can i find it on woodys page?

[jonny]

about half way down under neath cylinder valve threads.

[Laser]

looks like 7/8-14 UNF

[Laser]

whats the inlet thread for the thing on the fire extinguisher?

[maddox10]

Do fire extinguishers have regulators already fitted? If so what pressure do they regulate it down to and how do they cope with liquid co2?

A CO2 fire extinguisher uses the pressure drop between bottle and open air to freeze the liquid CO2 into a pretty snowcloud. It's how those things work. CO2 attacks 2 sides of the firetriangle. Removes heat and oxygen.

It's also the reason why these have a dip-tube. To draw up the liquid.