Paintball Cylinder Threaded Port Dimensions

[stratocaster142]

Does anybody have information on the threaded cylinder port that a paintball pin valve threads into?

I know it's a 5/8-18UNF-2B thread, but I need to know the dimensions for the o-ring surface of the port.

Thanks

 

[FredGarvin]

Any pressure cylinder should have a DOT number on the side. Can you find out what it is?

I take it the o-ring is a face seal?

 

[stratocaster142]

I didn't think the DOT number had anything to do with the thread port. No, I don't have an actual cylinder.

This is the pin valve:

http://home.fuse.net/edge/edgepaintball/pin_valve.jpg