Skip to main content
Service
Pumps
Contact
Search
Featured Image for GP7128-0021

WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Specification US Metric
Flow17.9 GPM67.7 L/min
Maximum Discharge Pressure5800 PSI400 bar
Crankshaft Speed750 RPM
Power71.4 HP53.2 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 1-1/4" NPT
Discharge Port Size(2) 3/4" NPT
Plunger Diameter1.1 in.28 mm
Stroke2.1 in.52 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter1.9 in.48 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.6 in.14 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US1.6 Gal. 6.0 L
Weight375 lbs.170 kg
Volumetric Efficiency89
Mechanical Efficiency83
Manifold Material Stainless Steel
The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.
ITEM# PART# DESCRIPTION Qty.
Plunger Packing Kit – Part #09464-0021
38A 06577 O-Ring 3
38B 07693 Support Ring 3
38C 06776 O-Ring 3
38D 12056 Support Ring 3
39A 13228 Grooved Ring 3
42 13369-0020 V-Sleeve 6
43 06862 Sleeve Support Ring 3
Valve Assembly Kit – Part #09520
51B 05193 O-Ring 3
51C 04725 Inlet Valve Seat 3
51D 13130 Valve Plate 3
51E 07062-0100 Valve Spring 3
52B 05193 O-Ring 3
52C 04726 Discharge Valve Seat 3
52D 13130 Valve Plate 3
52E 07062-0100 Valve Spring 3
58A 07700 O-Ring 3
58B 07693 Support Ring 3
Optional Teflon Packing Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Horsepower Specifications

RPM GPM 3000 PSI 4000 PSI 5000 PSI 5800 PSI
300 7.2 14.9 19.9 24.8 28.8
400 9.6 19.9 26.5 33.1 38.4
550 13.1 27.1 36.1 45.2 52.4
600 14.3 29.6 39.5 49.3 57.2
650 15.5 32.1 42.8 53.5 62.0
700 16.7 34.6 46.1 57.6 66.8
750 17.9 37.0 49.4 31.7 71.6

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7128-0021 Exploded View
  • GP7128-0021 Parts List

Literature

Documents open in new window/tab.

  • Pump Assembly Instructions
  • Giant Industries Limited Warranty
  • GP7128-0021 Installation Instructions
  • GP7128-0021 Repair Instructions

Sample Pump

Our Company

For 50 years, Giant Pumps has offered the most dependable positive displacement high-pressure triplex pumps available. Designed and built to the highest quality standards, customers count on Giant Pumps products to keep their equipment running. Every design detail of Giant Pumps products is optimized for long-life and reliable performance, making Giant Pumps the most trusted name in high-pressure pumps and systems.

Learn More

Join Our Newsletter

Get the latest updates from Giant Pumps delivered right to your inbox!

Subscribe to the Giant Newsletter

Back to Top