NC, auto-drain solenoid valve for air compressor. Can preset the open and close time in ... small shape, high reliability. Design for use withair compressor, air purifying, air station, water auto-supply and irrigation in general. ... as AC 220V, AC 110V...Temperature90deg CProtection ClassIP65Interval: (OFF)0.5~45minutesDrain time:(ON)0.5~10secondsCertificateISO9001/2008 air compressor solenoid valve