Was gifted one of these in excellent shape. Came with only a one second stage though. Searching online it seems that this setup was pretty much a one second-stage system. However there is another port on the first stage but I don't know if it can be used to put another regulator on.
I will be taking it to my LDS to have it overhauled but before I do I wanted to know a bit more about the first stage ports.
They are all marked, one is LP and that has second stage attached to it. One is marked HP and that has the console. A third is marked R and that has the BC fill hose attached and the final port is plugged and marked U. It is this last port I am curious about. it is on the same level as the LP and R ports which make me think it is also a low-pressure port.
Also, what do the markings "R" and "U" stand for?
Any input would be welcome!
Thanks!
I will be taking it to my LDS to have it overhauled but before I do I wanted to know a bit more about the first stage ports.
They are all marked, one is LP and that has second stage attached to it. One is marked HP and that has the console. A third is marked R and that has the BC fill hose attached and the final port is plugged and marked U. It is this last port I am curious about. it is on the same level as the LP and R ports which make me think it is also a low-pressure port.
Also, what do the markings "R" and "U" stand for?
Any input would be welcome!
Thanks!