250 GPM 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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Used Gaso 1740 Duplex Pump Complete Pump

Used 2 1/2 - 5 x 10 complete pump on skid with 50hp electric motor, 4" suction, old style fluid end, capable of 59gpm@ 1750psi @ 85rpm with 2 1/2" pistons or 336gpm @ 550psi @ 85rpm with 5 1/2" pistons

1 of 22
  • 120 HP
  • 85 RPM
  • 275 GPM
  • 1750 PSI
  • Ratio: 5.8460
  • Stock No: 56262
Positive Displacement Pump Reciprocating Pump
275
1750
85
120
5.8460
1 of 21
Used Gaso 1740 Duplex Pump Complete Pump

Used 2 1/2 - 5 x 10 complete pump, 4" suction, old stlye fluid end, capable of 59gpm @ 1750psi @ 85rpm with 2 1/2" pistons or 336gpm @ 550psi @ 85rpm with 5 1/2" pistons

1 of 21
  • 120 HP
  • 85 RPM
  • 275 GPM
  • 1750 PSI
  • Ratio: 5.8460
  • Stock No: 54670
Positive Displacement Pump Reciprocating Pump
275
1750
85
120
5.8460
1 of 18
Used Worthington KLS-1 Duplex Pump Complete Pump

Used Worthington KLS-1 duplex pump with the following features: • 10" stroke • 40HP • Cast iron fluid end • Capable of 53 gpm @ 1000 psi @ 75 rpm with 2 1/2" pistons or 185 gpm @ 250 psi @ 57 rpm with 5" pistons • 4" suction connection • 3" discharge connection • 4.93 (integral or pinion or eternal gear box) gear ratio • Weight • Dims

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  • 40 HP
  • 75 RPM
  • 243 GPM
  • 250 PSI
  • Ratio: 4.9300
  • Stock No: 56248
Positive Displacement Pump Reciprocating Pump
243
250
75
40
4.9300
1 of 25
Used Worthington KLS-1 Duplex Pump Complete Pump

Used Worthington KLS-1 duplex pump with the following features: • 10" stroke • 40HP • Cast iron fluid end • Capable of 53 gpm @ 1000 psi @ 75 rpm with 2 1/2" pistons or 185 gpm @ 250 psi @ 57 rpm with 5" pistons • 4" suction connection • 3" discharge connection • 4.93 (integral or pinion or eternal gear box) gear ratio • Weight • Dims

1 of 25
  • 40 HP
  • 75 RPM
  • 243 GPM
  • 250 PSI
  • Ratio: 4.9300
  • Stock No: 56225
Positive Displacement Pump Reciprocating Pump
243
250
75
40
4.9300
1 of 12
Used Gaso 1740 Duplex Pump Complete Pump

Used NOV 1740 duplex pump with the following features: • 10" stroke • 120 HP • Flat gasket fluid end • capable of 171 gpm @ 1040 psi @ 85 rpm with a 4" piston and 637 gpm @ 295 psi @ 85 rpm with a 7 1/2" piston • 6" suction connection • 4" discharge connection • 5.846 (integral or pinion or eternal gear box) gear ratio • Weight • Dims

1 of 12
  • 120 HP
  • 85 RPM
  • 275 GPM
  • 665 PSI
  • Ratio: 5.8460
  • Stock No: 57123
Positive Displacement Pump Reciprocating Pump
275
665
85
120
5.8460
1 of 13
Rebuilt Gaso 1742 Duplex Pump Complete Pump

Rebuilt Gaso 1742 Duplex pump

1 of 13
  • 120 HP
  • 85 RPM
  • 260 GPM
  • 665 PSI
  • Stock No: 58759
Positive Displacement Pump Reciprocating Pump
260
665
85
120
1 of 28
Used Oilwell 510-P Duplex Pump

Used Oilwell 510-P duplex pump with the following features: • 10" stroke • 120 HP • Cast steel fluid end • 5" pistons and liners • 4" 300 lb suction connection • 3" 300 lb discharge connection • 5.05 (integral or pinion or eternal gear box) gear ratio • Weight • Dims

1 of 28
  • 120 HP
  • 85 RPM
  • 275 GPM
  • 1500 PSI
  • Ratio: 5.0500
  • Stock No: 58668
Positive Displacement Pump Reciprocating Pump
275
1500
85
120
5.0500
1 of 16
Used Oilwell 510-P Duplex Pump

Used Oilwell 510-P duplex pump fluid end only with the following features: • 10" stroke • 120 HP • Duplex stainless steel fluid end • Plungers • 6" 300lb suction connection • 3" 600lb discharge connection • Weight • Dims

1 of 16
  • 120 HP
  • 85 RPM
  • 275 GPM
  • 1500 PSI
  • Ratio: 5.0500
  • Stock No: 58675
Positive Displacement Pump Reciprocating Pump
275
1500
85
120
5.0500