GP8135

A German-made reciprocating triplex plunger pump.

Features:
Attached gearbox; spheroidal cast iron crankcase with vented dipstick; forged, through-hardened, ground and polished crankshaft and pinion shaft; bronze connecting rods; hardened stainless steel plunger bases; solid ceramic plungers; nitrile seals with fabric reinforcing; stainless steel valves and machined stainless steel manifold. Comes equipped with an integrated oil cooling system.

  • GP8135 Exploded View
  • GP8135 Parts List
  • Giant Industries Limited Warranty
  • GP8135 Installation Instruction
  • GP8135 Repair Instructions
  • Troubleshooting Guide

SPECIFICATIONS

U.S. Metric
Flow 29.1 GPM 110 L/min
Maximum Discharge Pressure 7250 PSI 500 bar
Crankshaft Speed 580 PSI
Power Consumption 142 BHP 106 kW
Maximum Inlet Pressure 29 PSI 2 bar
Maximum Temperature 86 °F 30 °C
Plunger Diameter 1.38″ 35 mm
Stroke 2.83″ 72 mm
Pinion Shaft Diameter 45 mm
Pinion Shaft Rotation Towards Gear End of Pump
Key Width 14 mm x 70 mm
Crankshaft Mounting Either Side
Inlet Ports (2) 2″ NPT
Discharge Ports (2) 1″ NPT
Crankcase Oil Capacity 4.2 gal 16.0 L
Weight 800 lbs. 363 kg
NPSHR 27.8 ft.-head 8.5 mWs
Key Component Material
Manifold Stainless Steel Manifold
Plungers Solid Ceramic Plungers
Valves Stainless Steel Valves
Seals Nitrile Seals with Fabric Reinforcing
Gear End Cast Iron Crankcase

Click the image to enlarge


HORSEPOWER SPECIFICATIONS

RPM gpm 1000 PSI 2500 PSI 5000 PSI 7250 PSI
300 15.1 10.4 26.0 52.1 75.5
400 20.1 13.9 34.7 69.3 100.5
500 25.1 17.3 43.3 86.6 125.5
580 29.1 20.1 50.2 100.3 145.5

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 #09707
38A 05408 O-Ring 6
39A 05617 O-Ring 3
40 05744 Sleeve 3
40A 05745 O-Ring 3
41A 05747 Guide Ring 3
42 05748 Rope Packing 6
44 05751 Support Ring 6
Inlet Valve Assembly Kit – Part #09709
51 05837 Inlet Valve Assembly 3
56A 05408 O-Ring 3
Discharge Valve Kit – Part #09710
52 05839 Discharge Valve Assembly 1
Oil Seal Kit – Part #09584
32 05058 Radial Shaft Seal 3
33A 05056 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.