GP7142

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 cast aluminum bronze manifold.

  • GP7142 Exploded View
  • GP7142 Parts List
  • GP7142 Torque Specifications
  • Giant Industries Limited Warranty
  • GP7142 Installation Instructions
  • GP7142 Repair Instructions
  • Troubleshooting Guide

SPECIFICATIONS

U.S. Metric
Max Flow (Continuous) 38.4 GPM 145.3 L/min
Max Discharge Pressure (Continuous) 2610 PSI 180 bar
Max Speed (Continuous) 700 RPM
Inlet Pressure -4.35 to 140 PSI -0.3 to 10 bar
Plunger Diameter 1.7″ 42 mm
Stroke 2.0″ 52 mm
Max Temp @ 1000 RPM 140 °F 60 °C
Crankshaft Diameter 1.9″ 48 mm
Crankcase Capacity 1.6 gal 6.0 L
Weight 375 lbs. 170 kg
NPSHR 28 ft. of head  8.5 m of head
Inlet Ports (2) 2-1/2″ NPT
Discharge Ports (2) 1-1/4″ NPT
Shaft Rotation Top of Pulley Towards Manifold
Shaft Mounting Either Side
Key Component Material
Manifold Aluminum Bronze
Plungers Solid Ceramic Oxide
Valves Duplex 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 2610 PSI
300 16.5 9.1 11.4 17.1 22.8 29.7
400 21.9 12.1 15.1 22.7 30.2 39.4
500 27.4 15.1 18.9 28.3 37.8 49.3
600 32.9 18.2 22.7 34.0 45.4 59.2
700 38.4 21.9 27.4 41.1 54.9 69.1

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

as 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 #09766
38A 13156 O-Ring 3
38B 13141 O-Ring 3
39A 04323 Compact Ring 3
42 07745 V-Sleeve 6
Valve Repair Kit – Part #09765
51B 07732-0100 Valve Spring 6
51C 05314 Valve Plate 6
51D 05136A Valve Seat 6
51E 07653 O-Ring 6
51F 13166 Support Ring 6
56A 07658 O-Ring 6
56B 07635 Support Ring 6
56C 13166 Support Ring 3
56D 07653 O-Ring 3
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.