NH3 2 stage cycle question

[Kristof Papp]

Never mind this question, it was due to i couldn't get a proper NH3 logP-h diagram, but found out in coolpack i can get one which shows from 0.1 bar

Hello,
I'm studying about 2 stage cycle with NH3 refrigerant, and i don't understand some vital part about the whole thing.

I was told, that in an ice cream factory cooling tunnel there is like -40C, and to achieve that, they do the NH3 evaporation at around -45C , 0.4 bar , and the condensation is at around 40C , 10bar . ( between the 2 compressors, there is -10C and 2 bar)

But i checked the NH3 logP-h diagram ,or the diagram in CoolPack program and found that it doesn't even show the 0.4 , -45 bar part, like its on the edge of the diagram and those values are rarely used.

So maybe I'm understanding something wrong, and the evaporation isn't at isobar P=0.4 bar, isoterm -45C , or why is the diagram usually always show the part above 0.5 bar?

Thanks for the answers!