300 PSI Duplex Pumps For Sale

We have a large stock of Double-Acting Duplex Pumps that are used for various applications such as fluid (including heavy oil) transfers in pipelines, mud pumping, cement pumping, water well drilling etc. in the Oil & Gas, Agriculture, Mining, Municipal & Manufacturing sectors. Duplex Pumps have two cylinders and are capable of handling different pressures, volumes and flow rates. We supply new, used and refurbished API 674 Double Acting Duplex Pumps of all leading manufacturers including Gaso, Wheatley, Gardner Denver, National & Oilwell.

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1 of 37
Used Gaso 1743 Duplex Pump

Used Gaso 1743 duplex pump with the following features: • 10" stroke • 120 HP • Ductile iron fluid end • 4" pistons • 6" suction connection • 4" discharge connection • 5.846 (integral or pinion or eternal gear box) gear ratio • Weight • Dims

1 of 37
  • 120 HP
  • 85 RPM
  • 637 GPM
  • 295 PSI
  • Ratio: 5.8460
  • Stock No: 55320
Positive Displacement Pump Reciprocating Pump
637
295
85
120
5.8460
1 of 20
Used Gaso 1860 Duplex Pump Complete Pump

Used 2 1 /2 - 4 1/2 x 6 duplex pump, capable of 45gpm @ 988psi with 2 1/2" pistons or 148gpm @ 305psi with 4 1/2" pistons, on skid with 20HP motor

1 of 20
  • 31 HP
  • 100 RPM
  • 148 GPM
  • 305 PSI
  • Ratio: 5.1000
  • Stock No: 58252
Positive Displacement Pump Reciprocating Pump
148
305
100
31
5.1000
1 of 8
Used Gaso 1860 Duplex Pump Complete Pump

Used Gaso 1860 duplex pump package with the following features: • 6" stroke • 28.3 HP • Ductile iron fluid end • missing piston rods • 10" ANSI 150# FF suction connection • 4" ANSI 600# FF discharge connection • Packaged on skid with 25 HP motor • Weight • Dims

1 of 8
  • 28.3 HP
  • 100 RPM
  • 148 GPM
  • 305 PSI
  • Stock No: 58439
Positive Displacement Pump Reciprocating Pump
148
305
100
28.3
1 of 20
Used Gaso 1743 Duplex Pump Complete Pump

Used Gaso 1743 duplex pump with the following features: • 10" stroke • 120 HP • DI fluid end • 7.5” Pistons • Missing valves • 6" ANSI 150# suction connection • 4" ANSI 600# discharge connection • 5.846 (integral or pinion or eternal gear box) gear ratio • Last used in mud service • Weight • Dims

1 of 20
  • 120 HP
  • 85 RPM
  • 637 GPM
  • 295 PSI
  • Ratio: 5.8460
  • Stock No: 59314
Positive Displacement Pump Reciprocating Pump
637
295
85
120
5.8460