... and solenoid valve, which can make the compressor condensates water drain automatically.It is widely used in filter drier,oil ... /water segregator ,refrigerant compressed air drying maching,drying machine,air ... dri-p-feet,and so on.The time of drain and interval can be adjustable according to different needs. ... ,such as JORC,POWERFLOW and so on Electroinc Drain Valve