Series MX SAFEMAX solenoid valves are equipped with an integrated sensor that detects the position of the spool and enables to quickly exhaust the system in case of emergency. The single channel valve is classified in category 2 and can reach Performance level D. The double channel valve is classified in category 4 and can reach Performance level E. Please note: the safety valve is not sufficient, alone, to guarantee the safety function. Its setup requires the use of a monitoring device.