QB78D Carbine Project

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nervoustrig said:
Ah okay, thanks. I just refer to the whole thing as the burst disk...the vast majority of the ones I've seen are a 1-piece construction but I'm familiar with the type with a replaceable diaphragm piece so I think that's what you're describing.

The other thing that had me confused is that you referenced a thread type of 1/8" NPT or M10x1 to plug them. Paintball regulators use what are called unified burst disks and they have a 3/8"-24 thread. So if you're plugging them with a 1/8" NPT or M10x1, which are indeed a similar size and therefore may start to engage the threads in the regulator body, the result is a potentially unsafe condition.

Please, please be careful.

Another thing to consider is whether the bonnet is rated for 3000psi. As far as I know, most of them are but one example that is not is the Ninja Pro v2...the type with an indexable bonnet so you can clock the fill port or gauge to your preferred location. I forget what Ninja quoted as the maximum safe working pressure but suffice it to say 3000psi is too much.
Click to expand...

The tank I'm thinking about using is the Pepper Ball tanks we got back in 2019. I'm Googling to see if I can find the MSWP of the bonnet.
 
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