A German-made reciprocating triplex plunger pump.

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 special brass 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


U.S. Metric
Flow 9.8 GPM 37.0 L/min
Maximum Discharge Pressure 5800 PSI 400 bar
Crankshaft Speed 1000 RPM
Maximum Inlet Pressure 145 PSI 10 bar
Maximum Temperature 104 °F 40 °C
Plunger Diameter 0.79″ 20 mm
Stroke 1.65″ 42 mm
Crankshaft Diameter 35 mm
Crankshaft Rotation Top of Pulley Towards Manifold
Crankshaft Mounting Either Side
Inlet Ports (2) 1-1/4″ BSP
Discharge Ports (2) 1″ BSP
Crankcase Oil Capacity 101 fl. oz. 3.0 L
Weight 128 lbs. 58 kg
Key Component Material
Manifold Special Brass
Plungers Solid Ceramic Oxide
Valves Duplex Steel
Seals Nitrile With Fabric Reinforcing
Gear End Spheroidal Cast Iron

Click the image to enlarge


RPM GPM 3000 PSI 4000 PSI 5000 PSI 5800 PSI
600 5.9 12.1 16.2 20.2 23.4
700 6.8 14.1 18.9 23.6 27.4
800 7.8 16.2 21.6 27.0 31.3
900 8.8 18.2 24.3 30.3 35.2
1000 9.8 20.2 27.0 33.7 39.1

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
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.


Plunger Packing Kit – Part #09743
36 03214 Pressure Ring 3
37 07322 Sleeve 3
37A 05463 Sleeve 3
38 07270 Support Ring 3
Valve Assembly Kit – Part #09744
40 04118 O-Ring 3
40A 05523 O-Ring 3
44 04394 Valve Assembly 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.

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.