Flash wrote:
My new Harris O/A setup has the regulated oxygen guage scaled to 150 PSI.

Not much resolution when I am trying to set Oxy to 3-5 PSI "per the
book" for small stuff. None of the charts the vendor gave me show a Oxy
PSI above 60, most far below that.

Is it common to change out the Oxy regulated pressure guage for
something scaled lower ?

thx,
FF

Maybe your gauge is showing the TANK pressure and not the OUTLET pressure? - GWE