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

  • P201-4020 Exploded View
  • P201-4020 Parts List

Sorry, there are no accessories associated with this product.

  • Giant Industries Limited Warranty
  • P201-4020 Installation Instructions
  • P201-4020 Repair Instructions
  • Troubleshooting Guide


U.S. Metric
Flow 0.4 GPM 1.5 L/min
Maximum Discharge Pressure 3300 PSI 220 bar
Crankshaft Speed 1450 RPM
Power Consumption 0.94 HP 0.7 kW
Maximum Temperature 140 ºF 60 ºC
Plunger Diameter 0.47″ 12 mm
Stroke 0.13″ 3.4 mm
Crankshaft Diameter 0.98″ 24 mm
Crankshaft Rotation Top of Pulley Towards Manifold
Key Width 0.31″ 8 mm
Shaft Mounting Either Side
Inlet Ports (2) 1/4″ BSP
Discharge Ports (2) 1/4″ BSP
Crankcase Oil Capacity 9.5 fl. oz. 0.28 L
Weight 11.9 lbs. 5.4 kg
Dimensions 9″x7″x4″ 230x178x100mm
Key Component Material
Manifold Special Brass
Plungers Solid Ceramic Oxide
Valves High Grade Stainless Steel
Seals Nitrile With Fabric Reinforcing

Click the image to enlarge


RPM GPM 500 PSI 1000 PSI 2000 PSI 3200 PSI
725 0.20 0.07 0.14 0.28 0.44
900 0.25 0.09 0.17 0.35 0.55
1200 0.33 0.11 0.23 0.46 0.73
1450 0.40 0.14 0.28 0.55 0.88

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.


Seal Repair Kit – Part #09768
22 06717 Seal Ring, gray 6
22A 05858 Seal Ring, black 6
24 07770 O-Ring 6
29 05871 O-Ring 3
30 12017 O-Ring 3
Oil Seal Repair Kit – Part #09768
19 08356-0010 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.