An American-made triplex plunger positive displacement pump with reciprocating plungers for belt drive applications.

Aluminum 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; Teflon nitrile seals with EPDM O-Rings; stainless steel valves and stainless steel 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

  • CP230-5123 Exploded View
  • CP230-5123 Parts List
  • CP230-5123 Torque Specifications
  • CP230-5123 Technical Information

Sorry, there are no accessories associated with this product.

  • Limited Warranty
  • CP230-5123 Installation Instructions
  • CP230-5123 Repair Instructions
  • Troubleshooting Guide


U.S. Metric
Maximum Flow 0.45 GPM 1.7 L/min
Maximum Pressure 2030 PSI 140 bar
Crankshaft Speed 750 RPM
Power Consumption 0.7 hp 0.5 kW
Inlet Pressure 580 PSI 40 bar
Maximum Temperature -40 ºF to 32 ºF -40 ºC to 0 ºC
Plunger Diameter 0.71″ 18 mm
Stroke 0.13″ 3.4 mm
Crankshaft Diameter 24 mm
Shaft Rotation Top of Pulley Towards Manifold
Shaft Mounting Either Side
Inlet Ports (2) 3/8″ BSP
Discharge Ports (2) 3/8″ BSP
Crankcase Oil Capacity 8.1 fl. oz. 0.24 L
Weight 13.2 lbs. 6 kg
Key Component Material
Manifold Stainless Steel
Plungers Solid Ceramic Oxide
Valves High Grade Stainless Steel
Seals Teflon and Nitrile with EPDM O-Rings
Gear End Aluminum

Click the image to enlarge


RPM GPM 500 PSI 1000 PSI 1500 PSI 2030 PSI
200 0.1 0.0 0.1 0.1 0.1
300 0.2 0.1 0.1 0.2 0.3
400 0.3 0.1 0.2 0.3 0.4
500 0.3 0.1 0.2 0.3 0.4
600 0.4 0.1 0.3 0.4 0.6
750 0.5 0.2 0.3 0.5 0.7

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 #CP09554-5123
21 CP06815 O-Ring 3
23 CP08087 V-Sleeve, Weep 3
23A CP08087-0020 V-Sleeve, Brown 3
23B CP06163 Drip Shield 3
24 CP07904 Pressure Ring 3
Valve Assembly Kit – Part #CP09556-0123
26A CP04273 Valve Assembly, Complete 6
31 CP06817 O-Ring 6
33 CP06818 O-Ring 6
Oil Seal Kit – Part #CP09144
19 CP08356 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.