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A German-made reciprocating triplex plunger pump.

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; nitrile seals (with fabric reinforcing); stainless steel valves; and forged brass manifold.

Gearbox and bell housings (to connect to gasoline, diesel, electric or hydraulic drive) and pulsator valve.

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

Specification US Metric
Flow5.5 GPM20.8 L/min
Maximum Discharge Pressure4000 PSI275 bar
Crankshaft Speed1450 RPM
Power15.3 HP11.4 KW
Max Temperature160 °F70 °C
Inlet Port Size(2) 3/4" NPT
Discharge Port Size(2) 3/4" NPT
Plunger Diameter0.71 in.18 mm
Stroke0.79 in.20 mm
Maximum Inlet Pressure145 PSI10 bar
Crankshaft Diameter1.1 in.28 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.32 in.8 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity30 fl. oz. 0.89 L
Weight36.7 lbs.16.6 kg
Volumetric Efficiency0.95
Mechanical Efficiency0.82
NPSHR0.82 Ft.-head
Manifold Material Forged Brass
Crankcase Material Aluminum
Plunger Material Solid Ceramic Oxide
Valve Material High Grade Stainless Steel
Seal Material Nitrile with Fabric Reinforcing
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.
Plunger Packing Kit – Part #09141
21 07266 O-Ring 3
22 08059 O-Ring 3
23 08477 V-Sleeve 6
24 07929 Pressure Ring 3
Valve Assembly Kit – Part #09142
27A 06810 Valve Assembly Complete 6
33 06487 O-Ring 6
33 07489 O-Ring 6
Oil Seal Kit – Part #09306
19 08366 Oil Seal 3
Optional Viton Seal Kit – #09456
23 07902-0010 V-Sleeve w/support ring, Viton 6
24 07904 Pressure Ring 6

Horsepower Specifications

RPM GPM 1000 PSI 2000 PSI 3000 PSI 4000 PSI
920 3.5 2.4 4.9 7.3 9.7
1050 4.0 2.8 5.5 8.3 11.1
1185 4.5 3.1 6.3 9.4 12.5
1315 5.0 3.5 6.9 10.4 13.9
1450 5.5 3.8 7.7 11.5 15.3

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • P440A Exploded View
  • P440A Parts List


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • P440A Installation Instructions
  • P440A Repair Instructions
  • Troubleshooting Guide

Sample Pump

Our Company

For 50 years, Giant Pumps has offered the most dependable positive displacement high-pressure triplex pumps available. Designed and built to the highest quality standards, customers count on Giant Pumps products to keep their equipment running. Every design detail of Giant Pumps products is optimized for long-life and reliable performance, making Giant Pumps the most trusted name in high-pressure pumps and systems.

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