AA Vigilante leaks

[Meleager7]

Cool, i’ll Pop a gauge on there, and troubleshoot further,thanks

[lew]

You are correct. The lower holes are the input, and the one with the burst disc is an additional output. I don't see a need for a burst disc there, so replace it with a 1/8" NPT plug and the thread sealant of your choice.

[Meleager7]

hey, a few questions about the Vigilante, there are three ports on this reg, are the two lower ones both inputs?

the top most port appears to be an output, and as what looks to be a burst disk in there. This is where my leak is. See pictured

are these actual burst disks, that are single use only, so once it blows it needs replacing? Or is it a pressure relief valve which would reset, which could mean my reg is over pressurizing?

does the Reg piston also have a safety valve and are they prone to fail and leak too?

Thanks!