How Rotary Screw Air Compressors Work

Used 71,450 hours of run time. Quincy 75HP 460-Volt Rotary Screw Air Compressor QNW 371-D. Quincy 75HP 460-Volt Compressor QNW 371-D. Quincy 75HP 460-Volt Compressor QNW 371-D. Oil pump for zero PSI unloaded sump pressure.