Compressor Dryer electronic drain valve electronic timing clock drainage Drain Valve Introduction electronic drain valve to solid state electronic timer and solenoid valve to match the timing of realization of compressed air condensate automatic discharge, are widely used in filters, oil-water separation , a freeze-dryer, cold and dry machines, air compressors, gas tank, drip legs and other compressed air system components, discharge time and interval time can be adjusted according to different needs.