GP7145GB

A German-made reciprocating triplex plunger pump.

Features
Attached gearbox; spheroidal cast iron crankcase with 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.

  • GP7145GB Exlpoded View
  • GP7145GB Parts List
  • GP7145GB Torque Specifications
  • Giant Industries Limited Warranty
  • GP7145GB Installation Instructions
  • GP7145GB Repair Instructions
  • Troubleshooting Guide

SPECIFICATIONS

U.S. Metric
Flow (Continuous) 47.5 GPM 180 L/min
Flow (Intermittent) 60 GPM 227 L/min
Maximum Discharge Pressure (Intermittent) 3000 PSI 207 bar
Crankshaft Speed (Continuous) 750 RPM
Crankshaft Speed (Intermittent) 947 RPM
Maximum Inlet Pressure 145 PSI 10 bar
Maximum Temperature 140 °F 60 °C
Plunger Diameter 1.77″ 45 mm
Stroke 2.05″ 52 mm
Crankshaft Diameter 48 mm
Crankshaft Rotation Top of Pulley Towards Manifold
Key Width 0.6″ 14 mm
Crankshaft Mounting Either Side
Inlet Ports (2) 2-1/2″ NPT
Discharge Ports (2) 1-1/4″ NPT
Crankcase Oil Capacity 1.7 gal 6.3 L
Weight 418 lbs. 190 kg
Key Component Material
 Manifold Nickel-Plated Cast Iron
Plungers Solid Ceramic Oxide
Valves Stainless Steel
Seals Nitrile with Fabric Reinforcing
Gear End Spheroidal Cast Iron

Click the image to enlarge


HORSEPOWER SPECIFICATIONS

RPM GPM 800 PSI 1000 PSI 1500 PSI 2000 PSI 3000 PSI*
300 19.0 10.5 13.1 19.7 26.2 39.3*
400 25.3 14.0 17.4 26.2 34.9 52.3*
500 31.7 17.5 21.9 32.8 43.7 65.6*
600 38.0 21.0 26.2 39.3 52.4 78.6*
750 47.5 26.2 32.8 49.1 65.5 98.3*
789 50.0 27.6 34.5 51.7 69.0 103.4*
947* 60.0* 33.1* 41.4* 62.1* 82.8* 124.1*

*Intermittent Duty Only

Horsepower Requirements

The ratings shown are the power requirements for the pump. Gas engine power outputs must be approximately twice the pump power requirements shown above.

We recommend a 1.15 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsepower requirements use the following formulas:

Electric HP = (GPM X PSI)/1450

Gas HP = (GPM X PSI)/1100

*Engine power varies based on horizontal or vertical orientation, as well as by makes and models from each manufacturer.


REPAIR KITS

ITEM# PART# DESCRIPTION Qty.
Plunger Packing Kit – Part #09603
38A 13156 O-Ring 3
38B 06258 O-Ring 3
39A 13290 Grooved Ring 3
41 13296 Support Ring 3
42 13294 V-Sleeve 9
Valve Repair Kit – Part # 09661
51B 07732-0100 Valve Spring 1
51C 05314 Valve Plate 1
51D 05136A Valve Seat 1
51E/56D 07653 O-Ring 2
51F/56C 13166 Support Ring 2
56A 07658 O-Ring 2
56B 07635 Support Ring 2
Oil Seal Kit – Part #09221
32 07624 Radial Shaft Seal 3
33A 07627 O-Ring 3

Repair Kits Available

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.

PUMP CATEGORIES:
Service & Repair

Giant provides service on each pump and accessory that we sell. Many basic repair procedures are covered in the Giant repair manual. For all other questions on service or repair needs please contact your local Giant distributor.