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A German-made reciprocating triplex plunger pump.

Features:
Spheroidal cast iron crankcase with sight glass and vented dipstick; forged, through-hardened, ground and polished crankshaft; bronze connecting rods; hardened stainless steel plunger bases; solid ceramic plungers; nitrile seals with fabric reinforcing; stainless steel valves and nickel-plated Spheroidal cast iron manifold.

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
Flow43.5 GPM164.6 L/min
Maximum Discharge Pressure1450 PSI100 bar
Crankshaft Speed750 RPM
Power45.0 HP33.6 KW
Max Temperature140 °F60 °C
Inlet Port Size(3) 1-1/2" NPT
Discharge Port Size(2) 1" NPT
Plunger Diameter1.77 in.45 mm
Stroke1.81 in.46 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter35 mm
Crankshaft RotationTop of Pulley Towards Manifold
Crankshaft MountingEither Side
Crankcase Oil Capacity1.21 gal 4.6 L
Weight179 lbs.81 kg
Manifold Material Nickel-Plated Spheroidal Cast Iron
Crankcase Material Spheroidal Cast Iron
Plunger Material Solid Ceramic Oxide
Valve Material Stainless Steel/Plastic Retainer
Seal Material Nitrile with Fabric Reinforcing
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 #09228
35A 13286 O-Ring 3
35B 08183 O-Ring 3
36 13290 Grooved Ring 3
40 13294 V-Sleeve 6
Inlet Valve Assembly Kit – Part #09231
46A 12055 O-Ring 1
46B 08059 O-Ring 1
46C 13304 Valve Seat 1
46D 13306 Valve Plate 1
46E 13307 Valve Spring 1
Discharge Valve Assembly Kit – Part #09232
47A 13289 O-Ring 1
47B 07700 O-Ring 1
47C 13314 Valve Seat 1
47D 13306 Valve Plate 1
47E 13307 Valve Spring 1
Complete Valve Repair Kit – Part #09812
46A 12055 O-Ring 3
46B 08059 O-Ring 3
46C 13304 Inlet Valve Seat 3
46D 13306 Valve Plate 3
46E 13307 Valve Spring 3
46F 13308 Spring Tension Cap 3
46G 13309 Spacer Pipe 3
47A 13289 O-Ring 3
47B 07700 O-Ring 3
47C 13314 Discharge Valve Seat 3
47D 13306 Valve Plate 3
47E 13307 Valve Spring 3
47F 13308 Spring Tension Cap 3
48B 07740 O-Ring 3
Oil Seal Kit – Part #09230
31 13284 Oil Seal 3

Horsepower Specifications

RPM GPM 725 PSI 1000 PSI 1200 PSI 1300 PSI 1450 PSI
400 23.2 11.6 16.0 19.2 20.8 23.2
500 29.0 14.5 20.0 24.0 26.0 29.0
600 34.8 17.4 24.0 28.8 31.2 34.8
650 37.7 18.9 26.0 31.2 33.8 37.7
700 40.6 20.3 28.0 33.6 36.4 40.6
750 43.5 21.8 30.0 36.0 39.0 43.5

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP5145 Exploded View
  • GP5145 Parts List
  • GP5145 Torque Specifications

Literature

Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP5145 Installation Instructions
  • GP5145 Repair Instructions
  • Troubleshooting Guide

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.

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