Propane preasures

[jjjd]

On burnt latke it says that a propane tank will sit at around 90, when i open me regulator all the way my presure guage goes to around 120 psi or more, i want to use my gun for a science fair project, test the fuel to air mixture...i know its alread been tested to work best at 4.03% but i still want to do it. just wondering if my guage could be right or if this project will requier something special

[noname]

Your guage is fine. Propane liquifies at about 125 psi at room temperature, so if your tank is full, the guage should go to 120 or a little higher.

[jjjd]

ok so it reads correctly, thanks