Giant Pump 5.6 GPM 3000 PSI Pressure Washer Pump – 1610 RPM, 24mm Shaft

Model: P-55W
Category: Pressure Washer Pumps → Triplex Plunger Pumps
Type: Giant Pump 5.6 GPM 3000 PSI Pressure Washer Pump – 1610 RPM, 24mm Shaft

The Giant Pump P55W Reciprocating Triplex Plunger Pump is a heavy-duty pressure washer pump engineered for dependable performance in commercial and industrial cleaning applications. Built with a forged brass manifold, solid ceramic plungers, and an aluminum crankcase with sight glass and vented dipstick, this pump is designed for durability, smooth operation, and long service life under demanding conditions.

Key Features

• Genuine Giant Pump P55W reciprocating triplex plunger pump

• Rated up to 4.9 GPM @ 2320 PSI @ 1420 RPM continuous duty

• Intermittent rating up to 6.0 GPM @ 1000 PSI @ 1750 RPM

• Durable forged brass manifold for long-term reliability

• Solid ceramic plungers and hardened stainless steel plunger bases

• Aluminum crankcase with sight glass and vented dipstick

• Bronze connecting rods and forged, hardened crankshaft

• Dual 1/2" NPT inlet ports and dual 3/8" NPT discharge ports

• Handles pumped fluid temperatures up to 160°F

• Built for commercial and industrial pressure washer applications

Technical Specifications

Product Name: Reciprocating Triplex Plunger Pump
Manufacturer: Giant Pump
Model: P55W

Flow Rate: 4.9 GPM Continuous / 6.0 GPM Intermittent
Max Pressure: 2320 PSI Continuous / 3000 PSI Listing Reference
RPM: 1420 RPM Continuous / 1750 RPM Intermittent
Inlet Pressure: Up to 145 PSI
Plunger Diameter: 18mm
Stroke: 18.1mm
Crankcase Oil Capacity: 12.5 fl. oz. (370 ml)
Max Fluid Temperature: 160°F (71°C)

Inlet Ports: (2) 1/2" NPT
Discharge Ports: (2) 3/8" NPT
Crankshaft Mounting: Either
Shaft Rotation: Top of pulley towards fluid end
Crankshaft Diameter: 24mm
Weight: 18 lbs.

Volumetric Efficiency @ 1420 RPM: 0.94
Mechanical Efficiency @ 1420 RPM: 0.86
Condition: New

Construction Details

• 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

• Forged brass manifold

Typical Applications

• Commercial pressure washer systems

• Industrial cleaning and washdown equipment

• Pump replacements for compatible belt-drive pressure washers

• Equipment requiring a triplex plunger pump with brass manifold

• High-demand systems needing reliable continuous-duty performance