Our simulator helps you to optimize existing valves
and to evaluate proposed ones. It handles different type of valves:
solo-plate, concentric rings, damper plate and poppet.
This kind of graph can also show the fluttering condition. 
The Project Manager timing determines the rod load reversal. See here how the
suction valve is closing late.
Rod load regime can be simulated with the valve performance
simulator. Peak loads and duration of the reversal have high impact
on your compressor reliability. 
