What Should Be the Working Pressure for My Pneumatic Filling Machine?

[mvstaurean1974]

im designing a pneumatic filling machine with four filling heads. in all 7 cylinders are working simultaneously through p l c. the filling volume will be 100 ml/bottle within 6 seconds. what should be the working pressure of air so that i can decide the capacity of compressor.
the bore size of the cylinders are mentioned below.
dia 2 inches -- 4 cylinders
dia 3.5 inches -- 1 cylider
dia 0.75 inches -- 2 cylinder

 

[berkeman]

im designing a pneumatic filling machine with four filling heads. in all 7 cylinders are working simultaneously through p l c. the filling volume will be 100 ml/bottle within 6 seconds. what should be the working pressure of air so that i can decide the capacity of compressor.
the bore size of the cylinders are mentioned below.
dia 2 inches -- 4 cylinders
dia 3.5 inches -- 1 cylider
dia 0.75 inches -- 2 cylinder

Welcome to the PF.

What have you done so far? What equations should you use? Is this a schoolwork project?