See: So I made a thing to decarb with.... - #139 by Dannywarbucks
And that sealed mason jar is not a brilliant idea…maybe start at post one instead: So I made a thing to decarb with....
We have 75 psi PRV’s on our decarb reactors, and those go off repeatedly during the decarb process… see: Math help? How much pressure of x amount of co2 in y volume? to understand WHY.