Hi Ranger /Tycho
you should never fit a solenoid valve in series with an AKV/A valve. Solenoid valves of that size are mostly of the servo action type and likewise so is the AKV/A valve. As the AKVA valve opens and closes , the solenoid valve would do the same due to the stop and start of the refrigerant flow , this causes a double liquid hammer effect. If you feel the need to fit a solenoid valve in series with the AKVA valve use the EVRAT valve or ICM valve in ON/OFF mode , but as the AKVA is a dual solenoid valve/expansion valve there should be no need to fit a further valve.
Some large screw compressors manufacturers use the TEAT 20-8 valve as a pilot valve for the PMFL or PMFH for liquid injection control when larger capacity is involved.