This is really a troubleshooting question:
A personal friend who works at this plant brought this up in a casual conversation and made me curious as to what can be done about it.
A piping system connected to a reciprocating compressor which runs at a constant speed of 427 RPM with 2 pistons.  The capacity is controlled by 4 valves/Bellow Seal Valves.  Opening of each valve adds 25% to the capacity.  The 10