The GB-425 Series™ external gear pump is the cleanest solution for pipeline injection applications. The rebuildable design makes repair quick without having to leave the field and features new advanced materials on critical internal wear surfaces. It can handle flows up to 685 GPM.
Features & Benefits
REBUILDABLE DESIGN & INCREASED DURABILITY
- New advanced materials on critical internal wear surfaces
- Enhanced wear resistance and durability extend pump life
- All internal wear components are replaceable
- Simple disassembly and reassembly process saves time and money
- Complete rebuild kit brings the pump back to as-new operating condition
REDUCED MAINTENANCE
- Back pull-out Type 2 bellows seal design and spacer coupling eliminate the need to disturb piping or pump and motor placement during seal changes
- Robust axial thrust control bearing reduces premature seal failure due to elevated inlet pressure, starts, stops, and other unique application conditions
- Rigid structural steel base with milled mounting pads and jacking bolts for ease of field alignment
- No pulsation dampeners, gear reducers, belt drives, or additional equipment to service and maintain
MODULAR PORT DESIGN
- 6”, 180° 3000 Series square flange ports standard
- Weldneck port adapter design allows for multiple interchangeable flange options
- Common Port Location (CPL) feature allows for installation of lower flow rate pumps when well production decreases without welding or piping modifications
COMPACT FOOTPRINT
- 11’ unit length on largest pump and motor assembly for significantly smaller foot print than the competition
- Motor speed operation eliminates the need for gear reducers or belt drives
- Units include small, rigid formed steel baseplate complete with spacer coupling and coupling guard
Capacity
to 24,050 BPD (700 GPM)
Viscosity
to 550 cP
Pressure
to 1,500 PSI
Temperature
0 to +350°F
Options
Porting
6” 4-bolt port for 3000 series square flange
Drives
D Drive (Base Mounted)
Mounting
Foot Mount
Sealing
Mechanical Seals
Specifications
Pump Model (Ductile Iron Externals | Port Size (Inch) | Nominal Flow @ 750 PSI (1190 RPM) on 4 cP | Nominal Flow @ 1500 PSI (1190 RPM) on 4 cP | Max Continuous Pressure (PSI) | Max Recommended Temperature (Def. F) | Approx. Shipping Weight (Pump Only, LBS) |
---|---|---|---|---|---|---|
GB-425021 | 6" | 170 GPM / 245 BPH / 5,890 BPD | 150 GPM / 212 BPH / 5,100 BPD | 1500 | 350 | 1,375 |
GB-425052 | 6" | 345 GPM / 490 BPH / 11,770 BPD | 298 GPM / 425 BPH / 10,200 BPD | 1500 | 350 | 1,786 |
GB-425073 | 6" | 515 GPM / 735 BPH / 17,655 BPD | 446 GPM / 368 BPH / 15,300 BPD | 1500 | 350 | 2,473 |
GB-425051 | 6" | 340 GPM / 488 BPH / 11,720 BPD | - | 750 | 350 | 1,500 |
GB-425102 | 6" | 685 GPM / 975 BPH / 23,440 BPD | - | 750 | 350 | 2,037 |
Photos
Videos

Crude Oils
This is a very generic term for unrefined oils typically being recovered from the ground. Some crude oil may contain particulates from the oil well or recovery method. They are considered to be flammable liquids. Crude oils are later refined and used for everything from making plastics to gasoline.
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TSM / Catalog / Flyers / Brochures
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Repair Resources
Rebuilding a GB-425 Series™ Pipeline Injection Pump
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DRAWINGS
GB425021 - 6" 3000 Series Square Butt Weld Flanges PDF
GB425021 - 6" 3000 Series Square Butt Weld 444/449T PDF
GB425021 - 6" 3000 Series Square Butt Weld 404/405T PDF
GB425021 - 6" 3000 Series Square Butt Weld 364/365T PDF
GB425051 - 6" 3000 Series Square Butt Weld Flanges PDF
GB425051 - 6" 3000 Series Square Butt Weld 444/449T PDF
GB425052 - 6" 3000 Series Square Butt Weld Flanges PDF
GB425052 - 6" 3000 Series Square Butt Weld 444/449T PDF
GB425052 - 6" 3000 Series Square Butt Weld 586/589T PDF
GB425073 - 6" 3000 Series Square Butt Weld Flanges PDF
GB425073 - 6" 3000 Series Square Butt 444/449T PDF
GB425073 - 6" 3000 Series Square Butt Weld 586/589T PDF
GB425102 - 6" 3000 Series Square Butt Weld Flanges PDF
GB425102 - 6" 3000 Series Square Butt 444/449T PDF
GB425102 - 6" 3000 Series Square Butt Weld 586/589T PDF
