Convert from single gauge to dual gauge?

[myerfire]

I have a Micro Matic single gauge, number 57550. Is is possible to remove the plug to put a gauge in to give me tank pressure. I understand that the plug is pressed in and might not be possible to remove. Any advice would be appreciated.
myerfire

[twoodward15]

It seems odd that the plug would be pressed in and not threaded for two reasons. First, that would mean there would be 2 different castings. One for a single gauge and one for a double. That would cost more money. Number two would be that the chance of that plug leaking would seem greater than a threaded plug, causing more warranty work. I'd check it out to make sure it is indeed a pressed in plug. I can't believe that as high end as micro-matic equipment is that they would cheap out on something like this. Just doesn't seem right. I think the regulator I am using now is a MM. I'll look when I get home and see what model it is, but I know it has a threaded port for a second gauge.

[kegman.ma]

If you want to measure the tank pressure then make sure you have a port for a high pressure gauge-there is a difference between the two.