Lincoln 4475 Lincoln Lubrication Air Operated Single Acting Oil Pump 16-55 Gal.

Operation: Pneumatic fluid delivery stroke, spring return stroke Material outlet: 3/8" or 1/2' NPTF Attachment: 2" bung, adj. for 55 & 16 gallon drums, bench & portable tanks Effective pump ratio: Approximately 0.7:1 to 0.8:1 depending on inlet air pressure Inlet air pressure, Max: 120 psi (8.31 bar) / Min: 20 psig (1.4 bar)