This pump is in good working condition.
Was used to pump out 200L drums of ink.

Brand: ARO
Model: 650491-521

Ratio: 12:1
Plate Diameter: Approx 580mm
Overall Dimensions (mm): 1005 x 615 x 1600

Pump Performance
Air Inlet Pressure Range . . . . . 30 - 120 PSI (2 - 8.3 bar)
Fluid Pressure Range. . . . . . . . 360 - 1800 PSI (24.4 - 122.4 bar)
Max. Recd Cycles Per Minute . 60
Displacement Per Cycle . . . . . . 12.6 in3(206.4 cm3)
Cycles Per Gallon (Liter). . . . . 18.3 (4.8)
Flow @ 60 Cycles / Minute. . . . 3.3 GPM (12.4 lpm)

Pump Specifications
Lower Pump Material . . . . . . . . Carbon Steel (Nickel Plated)
Plunger Material . . . . . . . . . . . . 17.4 Stainless Steel (Hard Chrome Plated)
Cylinder Material. . . . . . . . . . . . Carbon Steel (Nickel Plated)
Motor Diameter . . . . . . . . . . . . 4-1/4
Stroke . . . . . . . . . . . . . . . . . . . 6
Air Inlet . . . . . . . . . . . . . . . . . . 1/2 NPT(F)
Exhaust Port . . . . . . . . . . . . . . 1-1/4 NPT(F)
Material Outlet . . . . . . . . . . . . . 1 NPT(F)