How much force generated by hammer onto valve?

Hi All,

I was wondering if anyone here could help me figure out how much energy is required to open the condor valve? Even a ballpark would be super appreciated, heck, even an educated guess.

I understand the math is pretty simple, hammer weightxspeed = force, but I was wondering if anyone had the actual numbers?

AKA, I have no idea how to even guess at the values.

Thanks!