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Featured Image for GP7255A-5000

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
Flow65.8 GPM250 L/min
Maximum Discharge Pressure1500 PSI100 bar
Crankshaft Speed700 RPM
Power68.1 HP50.8 KW
Max Temperature140 °F60 °C
Inlet Port Size(2) 2-1/2" BSP
Discharge Port Size(2) 1-1/4" BSP
Plunger Diameter2.17 in.55 mm
Stroke2.05 in.52 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter48 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.55 in.14 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity1.9 gal 7.3 L
Weight474 lbs.215 kg
Manifold Material Stainless Steel
Crankcase Material Spheroidal Cast Iron
Plunger Material Solid Ceramic Oxide
Valve Material Stainless Steel
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.
Seal Repair Kit – Part #09220
38A 13156 O-Ring 3
38B 07721 O-Ring 3
39A 07723 Grooved Ring 3
41 13158 Support Ring 3
42 07711 V-Sleeve 6
Valve Assembly Kit – Part #09659
51 05594 Inlet Valve Assembly 1
56A 07658 O-Ring 1
56B 07635 Support Ring 1
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Horsepower Specifications

RPM GPM 800 PSI 1000 PSI 1300 PSI 1500 PSI
479 45.0 24.8 31.0 40.3 46.6
531 49.9 27.5 34.4 44.7 51.6
585 55.0 30.3 37.9 49.3 56.9
638 60.0 33.1 41.4 53.8 62.1
700 65.8 36.3 45.4 59.0 68.1

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP7255A-5000 Exploded View
  • GP7255A-5000 Parts List

Literature

Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP7255A-5000 Installation Instructions
  • GP7255A-5000 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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