LP121A-5100

A German-made triplex plunger positive displacement pump with reciprocating plungers for belt drive applications.

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 316 stainless steel manifold.

  • LP121A-5100 Exploded View
  • LP121A-5100 Parts List
  • LP121A-5100 Torque Specifications
  • Giant Industries Limited Warranty
  • LP121A-5100 Installation Instructions
  • LP121A-5100 Repair Instructions
  • Troubleshooting Guide

SPECIFICATIONS

U.S. Metric
Max Flow (Continuous) 32.5 GPM 123.1 L/min
Max Discharge Pressure (Continuous) 1740 PSI 120 bar
Max Speed (Continuous) 1000 RPM
Inlet Pressure 90 PSI 6.2 bar
Plunger Diameter 1.42″ 36 mm
Stroke 1.65″ 42 mm
Max Temp @ 1000 RPM 140 °F 60 °C
Max Temp @ 500 RPM 160 °F 71°C
Crankshaft Diameter 35 mm
Crankcase Capacity 118 fl. oz. 3.5 L
Weight 119 lbs. 54 kg
Inlet Ports (3) 1-1/2″ BSP
Discharge Ports (3) 1″BSP
Shaft Rotation Top of Pulley Towards Manifold
Shaft Mounting Either Side
Key Component Material
Manifold  316 Stainless Steel Manifold
Plungers  Solid Ceramic Plungers
Valves  Stainless Steel Valves
Seals  Nitrile Seals
Gear End Spheroidal Cast Iron

Click the image to enlarge


HORSEPOWER SPECIFICATIONS

RPM GPM 500 PSI 1000 PSI 1500 PSI 1740 PSI
500 16.3 5.6 11.3 16.9 19.6
640 20.8 7.2 14.4 21.7 25.1
750 24.4 8.5 16.9 25.4 29.5
805 26.2 9.1 18.2 27.3 31.6
865 28.1 9.8 19.5 29.3 34.0
920 29.9 10.4 20.8 31.1 36.1
1000 32.5 11.3 22.6 33.9 39.3

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 #09720
36 13291 Leakage Seal 3
38 07140 O-Ring 6
40 07144 V-Sleeve 6
Valve Assembly Kit – Part #09196-0100
44A 07150 O-Ring 9
44B 06266 Support Ring 3
46A 07064-0100 Valve Seat 6
46B 07063-0100 Valve Plate 6
46C 07062-0100 Valve Spring 6
Oil Seal Kit – Part #09577
31 07133 Oil Seal 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.