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Discussion Starter · #1 ·
Hi everyone,
I have a question related to the AR20 regulator (might apply to the AR10, as well):

If you remove the cap (which is also the pressure regulator) to reveal the hex screw, you'll notice a tiny hole near the center, that goes down into the regulator itself.

Days ago, while testing for leaks in my tapped magazine (long Tanaka mag) I accidentally submerged the AR20 regulator as well and noticed that some tiny amount of air bubbles were coming out of that tiny hole.

My guess is that, since the AR20 caps at around 120-140PSI (mine does, at least), and since my primary regulator is pushing air at 200PSI, the excess pressure is so high that - in order to regulate it - the AR20 uses that tiny hole as an exhaust valve. This also ensures the regulator does not blow up when feeded with very high pressures.

Now, the above is my personal guess..although I do have some common sense, I might very well be wrong so I am asking you guys to back me up on this or bash me down ;)

Thanks for the help!
 

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Discussion Starter · #2 ·
I understand this might not become the most popular thread ever eheh so I just wanted to bump it quickly to say that - in case anyone has an AR10 or AR20 regulator - if you happen to drop it underwater to test for any leak (as described above) - I would totally love to hear your feedback (please let me know what pressure was the primary running when you tested the ARx0 secondary!)

Thanks for the opportunity!
 

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Discussion Starter · #4 ·
My current HPA setup doesn't involve a secondary regulator ATM(I plan to install one soon), so I can't comment on that.
You'd better PM Cheese Man on that.

Wolf
Will do. On ASM I was told it might be a sort of safety exhaust because the AR is getting more pressure than it can hold. I am going to try and lower the Primary PSI and see if it still spills...At 145PSI it should max out so I will try and keep it below that..
 

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Discussion Starter · #6 ·
You are correct. If you feed it less than 140 PSI it will not leak through that hole.
But if I feed it more it will keep going until the co2 capsule is exhausted, right? At least that is what happens ;)

On HPA I won't have this problem because I will have an on/off valve that will keep the air from leaving the tank..

Thanks for jumping in, CM!
 
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