From Pumpsolutions

Yamada Ink Pro 200 and 250 Drum Type Pumps

Above Models also Available in Bulk/Tote Type

Technical Data 250

Air Motor Size:..........10 inches
Ratio:..........10:1 and 20:1
Operating Air:...30 - 100 psi.....Max Pressure: 682 psi and 1305 psi
Discharge Volume per cycle:0.373 gal and 0.195 gal
Max Discharge Volume: 18.6 gpm (10:1)and 9.8 gpm (20:1)
Air Consumption Per Cycle: 1.44scfm @ 43.5 psi and 2.4 scfm @ 72.5 psi
Air Supply: 3/4" with Delivery Port at 1 1/2"

Technical Data 200

Air Motor Size:..........8 inches
Ratio:..........10:1 and 250:1
Operating Air:...30 - 100 psi.....Max Pressure: 682 psi and 1697 psi
Discharge Volume per cycle:0.248 gal and 0.094 gal
Max Discharge Volume: 12.4 gpm (10:1)and 4.7 gpm (25:1)
Air Consumption Per Cycle: 0.91scfm @ 43.5 psi and 1.52 scfm @ 72.5 psi
Air Supply: 3/4" with Delivery Port at 1 1/2"

Above used with Permission from Yamada as an Authorized Inkpro Reseller