3 working valves.
Tonight I LN2 tested three different valves.
ALL three worked to turn 350PSI LN2 on and off, even after LN2 soaking to get cold.
The first valve is a Home made valve made valve with a banebot 36mm 256:1 gear motor.
This valve is 900 gms.
The second valve I tested is the Drill motor valve as previously described on this blog. 1.2Kg
The Third valve I tested is KZCO actuated valve like Armadillo is using. It is a bit more than 2Kg.