The CALIFORNIA AIR TOOLS 4610ALFCAD Ultra Quiet air compressor is designed to be one of the quietest air compressors in the industry having only 60 decibels of sound. The powerful 1.0 HP motor operates at only 1400 RPM creating less noise and less wear. The MP-100LF Series of Ultra Quiet Air Compressor Motors have been designed to increase duty cycle and allow for longer continuous run times (i.e. may run continuously at 1.5 cfm @90 PSI for up to 4 hours, or intermittently 30-40 minutes at a time at 3.0 cfm @90 PSI). The Dual Piston Pump System produces 25% more air compared to other 1.0 Hp air compressor motors. The MP-100LF motor/pump is tested for a minimum life of 4000 hours before wear, 30% longer than the MP100 motor/pump. The California Air Tools EZ-1-2321 Automatic Drain Valve has been designed to eliminate manually draining your air compressor air tank. The manually set timer allows you to set the time for both the frequency and duration of the draining process. The 4.6 gallon aluminum air tank is lightweight (45 lbs) and rust resistant making it very easy to transport.This air compressor is ideal for anyone working inside where noise is a major issue and customer wants the convenience of the automatic drain to take care of daily maintenance. The 4610ALFCAD is particularly ideal for restaurants, bars, fast food facilities, yachts and theme parks.