Self Cleaning, Resists clogging Does not stick open - NO wasted air Built in Strainer Easy installation No crawling under the receiver tank - Allows drain valve to be mounted higher than the 18" mandatory height requirement in automotive shops. Installs quickly to existing filters Bulkhead feature allows for easy installation on dryer side panel or to motor mounting plates. Optional mounting bracket available 4" long x 3.5" wide Weight is 1.3 Lbs. .5 to 10 second open cycle 30 second to 45 minute off cycle 250 PSI 115v / 60 Hz .156 diameter precision orifice Includes LED lights and test button