SP-9421 Parts California Air Tools 10020DCAD-22060 Powerful 2.0 HP Ultra Quiet, Oil Quiet Air Compressor Motor The SP-9421-22060 220 Volt 60 Hertz motor has a new valve plate design made with Swedish reed valves which improves air flow, reduces wear and decrease the sound level., The powerful 2., 0 HP motor operates at only 1680 RPM creating less noise and less wear. The SP-9421-22060 (220 Volt 60 Hertz) motor has a valve plate design made with Swedish reed valves which improves air flow, reduces wear and decrease the sound level The Oil-Free Dual Piston Pump System is engineered for high performance and durability. Compressor by California Air Tools Capacitor & Air Filter, Thermal Overload Protector Maximum PSI - 125 PSI , 220v / 60 hz The CALIFORNIA AIR TOOLS SP-9421-22060 Ultra Quiet & Oil-Free Air Compressor Pump/Motor is designed to be one of the quietest in the industry having only 70 decibels of sound The CALIFORNIA AIR TOOLS SP-9421-22060 Ultra Quiet & Oil-Free Air Compressor Pump/Motor is designed to be one of the quietest in the industry having only 70 decibels of sound. These motors are engineered to dissipate the heat better which allows for a cooler operation reducing wear and increasing life before service. The SP Series of Ultra Quiet Air Compressor Motors have been designed to increase duty cycle and allow for longer continuous run times.