RKA45G40HN 4.5 GPM 4000 PSI | Heavy-Duty Triplex

Product Summary

• RKA45G40HN industrial triplex plunger pump engineered for demanding commercial cleaning and high-uptime wash programs.
• Delivers 4.5 GPM at 4000 PSI at 1750 RPM for cooler operation, reduced wear, and extended service intervals.
• 18,000 ECU output supports fast rinsing, strong impact force, and efficient job completion on heavy soils.
• 24 mm solid shaft supports robust belt-drive builds and controlled-speed systems tuned to the duty point.
• Backed by a 5-year limited manufacturer warranty for long-term confidence in professional environments.

System Configuration

• Triplex crankshaft-drive architecture designed for smooth, low-pulsation delivery under sustained load.
• Low-speed 1750 RPM platform supports cooler running temperatures and longer seal life.
• 24 mm solid crankshaft supports belt-and-pulley configurations for flexible packaging and alignment.
• Optimized for contractor rigs, wash bays, and OEM frames where reliability and rebuildability are required.
• Built to operate within industrial duty cycles when supplied with clean water and proper filtration.

Performance Specifications

• Model: RKA45G40HN.
• Rated Flow: 4.5 gallons per minute.
• Rated Pressure: 4000 PSI.
• Operating Speed: 1750 RPM.
• Crankshaft: 24 mm diameter solid shaft.
• Pump Type: Triplex plunger pump.
• ECU Rating: 18,000.
• Warranty: 5-year limited manufacturer warranty.

Included Components

• Pump supplied with pre-filled break-in oil.
• Oil sight glass and vented dipstick for easy oil monitoring and service access.
• Operation manual and parts schematic for installation, service, and rebuild planning.
• Configured as a pump-only solution to pair with the unloader and accessories matched to your build.

Packaging & Deployment

• Designed for belt-drive integration where pulley ratio sets final pump RPM and operating point.
• 24 mm shaft supports common hub and pulley options used in industrial skid and trailer builds.
• Low-speed design supports longer runtime and lower thermal load in wash bay environments.
• Documentation supports consistent installation, parts identification, and planned maintenance.

Materials & Quality Control

• Ceramic plungers selected for wear resistance and stable sealing performance at high pressure.
• Industrial-duty sealing system designed to retain pressure and reduce leakage under continuous operation.
• Precision-machined internal components built to maintain consistent output and long service life.
• Oil-bath crankcase supports stable lubrication and bearing life at 1750 RPM duty cycles.
• Factory assembly and function verification performed prior to packaging and distribution.

Manufacturing Standards of RKA45G40HN

• Manufactured to industrial-duty triplex pump production standards.
• Designed to meet published performance ratings at 1750 RPM operation.
• Service documentation included to support maintenance planning and long-term ownership.
• Warranty coverage supports contractor and fleet users running scheduled wash programs.

Operating Guidance

• Confirm belt alignment, pulley condition, and guarding prior to startup on belt-drive installations.
• Use clean water supply and proper inlet filtration to protect valves, packings, and plungers.
• Verify supply flow is adequate for 4.5 GPM operation before extended runtime.
• Pair with an unloader/regulator sized to 4.5 GPM and set pressure at the nozzle for accurate control.
• Follow the operator’s manual for break-in procedure, oil service intervals, and winterization.

Service & Maintenance

• Monitor oil level through the sight glass and service oil per manufacturer intervals.
• Inspect inlet strainers frequently to prevent cavitation and pressure instability.
• Check fittings and plumbing connections for leaks and air ingestion during routine inspections.
• Inspect packings and valves on a schedule matched to duty cycle and water quality.
• Use the parts schematic to plan rebuild kits and reduce downtime during service events.

Applications

• Heavy machinery and construction equipment washing.
• Concrete surface preparation, restoration, and cleanup.
• Fleet maintenance programs for trucks, trailers, buses, and service vehicles.
• Industrial wash bays and contractor trailer / skid-mounted pressure washer rigs.
• Manufacturing and facility maintenance where high-output, low-RPM reliability is required.