S-200 ?

[Gary]

 The gauge on the S-200 that I have has decided to read what it wants instead of what it has as far as pressure. It isn't leaking but I would like to get a replacement. I would like to get  the thread size of the gauge. The other option is send the pressure tube off and they will replace the whole end of the tube along with a new way to fill by using a probe. I am not interested in going to that expense  and needing to keep track of another probe just to get a pressure reading.

Thanks in advance for any help.

Gary

[Gary]

I found the answer and it could come in handy for anyone with an AA rifle.

That AA tank actually uses this same gauge as their other rifles.
The thread on that gauge is 1/8"bspp and uses a -011 o-ring (1/16" thick with 5/16" ID) to seal around the threads.

I sent an email to P.A. and they supplied me with the info.

Gary