For sale is a Quincy QR-25 370 15 HP Reciprocating Air Compressor, 120 gal tank. Works great. 15 HP, 230 or 460 volts 3 phase. QR-25 style pumps represent a breakthrough in compressor design from 1930s, with pressure lubrication and heavy duty valves. These compressors last forever. I used to own a 340 compressor from 1958. Heavy duty Marathon motor.