What size threading is this?

Building or modifying BB, Airsoft, and pellet types of guns. Target practice only!
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Pneumaticology
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Recently i decided it would be appropriate to get of my arse and get a job. So i did, and its pretty well paying too, so hopefully i will soon stop annoying you with my 'what is' and 'what if' posts and have some completed guns up soon :)

Anyway, i was wondering if anyone knows what threading the end of this adapter is, it fits into a standard paintball gun.

It looks like 1/2" NPT, and i hope it is.
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http://www.ebay.com.au/itm/Paintball-New-Quick-Change-12g-CO2-Cartridge-Adapter-/170682049785?pt=LH_DefaultDomain_15&hash=item27bd7164f9#ht_2963wt_1080
http://www.ebay.com.au/itm/Paintball-New-Quick-Change-12g-CO2-Cartridge-Adapter-/170682049785?pt=LH_DefaultDomain_15&hash=item27bd7164f9#ht_2963wt_1080
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mobile chernobyl
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from zdspb.com:

"ASA threads- 1/2 NPS -Female threads only. The opposing male threads are smaller to allow clearance."

the threads on the end of that 12g adapter are considered ASA threads in the paintball world...
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Gun Freak
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JSR has put them directly into a 1/2" BSP ball valve, I think.
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Pneumaticology
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Smaller, so they wouldnt fit into a normal 1/2" Female NPT properly?
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warhead052
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Gun Freak wrote:JSR has put them directly into a 1/2" BSP ball valve, I think.
If you can, send me a link? I just thought of something, and if that works then it would be perfect.

Pneumaticology, if all else fails, get a fitting that fits it as tightly as possible, screw it in until it won't move, then fill the gaps with jb weld or equally strong adhesive.
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Petitlu
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this is my first PAC!
threading is the 1 / 2 BSP, here it is screwed to a plumbing fitting

Image
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