RKA65G20HN 6.5 GPM 2000 PSI | Industrial Triplex Pump

Annovi Reverberi RKA65G20HN Triplex Plunger Pump

Overview

The Annovi Reverberi RKA65G20HN is a commercial-duty triplex plunger pump engineered
for applications that demand high flow, moderate pressure, and long-term reliability.
Producing up to 6.6 GPM at 2,000 PSI while operating at a controlled
1,750 RPM, this pump is optimized for continuous-duty cleaning systems where
coverage speed, rinse efficiency, and equipment longevity are more important than extreme
cutting pressure.

As part of the RKA Series (228), the RKA65G20HN is built around a slow-speed,
industrial architecture that minimizes heat, vibration, and mechanical stress. Its
24 mm solid shaft (HN configuration) is designed for belt-drive or gear-drive
systems, making it an excellent choice for fixed wash stations, skid-mounted systems,
and OEM equipment where drive flexibility and durability are critical.

Performance & Operating Profile

The RKA65G20HN sits squarely in the “high-flow / mid-pressure” performance range.
At 6.6 GPM, it moves a significant volume of water, allowing operators to rinse large
surfaces quickly and flush debris efficiently. The 2,000 PSI pressure rating provides
enough mechanical force to remove grease, dirt, and buildup without damaging painted,
coated, or sensitive surfaces.

• Flow Output: Up to 6.6 GPM for fast coverage and efficient rinsing.
• Pressure Rating: 2,000 PSI (138 bar) for controlled, effective cleaning.
• Speed: 1,750 RPM to reduce wear and extend service life.
• Power Requirement: Approximately 9 EBHP for efficient motor or engine pairing.

Key Specifications

• Pump Type: Triplex plunger
• Series: 228 (RKA)
• Maximum Flow: 6.6 GPM (25 L/min)
• Maximum Pressure: 2,000 PSI (138 bar)
• Operating Speed: 1,750 RPM
• Shaft: 24 mm solid shaft (HN – neutral/natural shaft)
• Orientation: Horizontal
• Head Material: Nickel-plated brass
• Connecting Rods: Bronze
• Plungers: Solid ceramic
• Inlet Port: 1/2″ Female
• Outlet Port: 3/8″ Female
• Oil Capacity: 15 oz
• Maximum Fluid Temperature: 140°F
• Weight: Approximately 20 lbs

Construction & Materials

The RKA65G20HN is constructed using materials selected for durability in demanding
commercial environments. Its nickel-plated brass manifold provides superior
resistance to corrosion, detergents, and mineral-rich water compared to standard brass
heads. This makes the pump well suited for frequent washdown cycles, reclaimed water,
and chemical-assisted cleaning.

Internally, the pump uses solid ceramic plungers that maintain smooth sealing
surfaces over thousands of operating hours. Ceramic plungers resist abrasion and heat,
helping to protect seals and maintain consistent pressure output. The use of
bronze connecting rods adds strength and fatigue resistance, supporting
continuous-duty operation under load.

Drive End & Lubrication System

Designed for belt-drive and gear-drive configurations, the 24 mm solid shaft provides
excellent torque transfer and alignment stability. The slow-speed 1,750 RPM design
reduces dynamic loads on bearings and rods, which is a major contributor to long pump
life in industrial systems.

• Oil-bath crankcase lubricates all critical moving components.
• 15 oz oil capacity supports stable temperatures during long run times.
• Oil sight glass allows quick visual inspection of oil level and condition.
• Vented dipstick supports proper crankcase pressure regulation.

Installation & System Integration

The RKA65G20HN is intended for professional system builds where drive flexibility is
required. Its solid shaft design allows easy integration with belt-drive pulleys,
gear reducers, or flexible couplings. This makes it ideal for installations where
motor speed reduction, vibration isolation, or custom layouts are necessary.

• Compatible with belt-drive and gear-drive power transmission.
• Standard inlet and outlet ports simplify plumbing.
• Works with unloaders, regulators, and safety relief valves.
• Compact footprint supports skid-mounted and stationary systems.

Typical Applications

Thanks to its high flow, moderate pressure, and durable construction, the RKA65G20HN
is widely used in commercial and light industrial environments:

• Fleet washing: Trucks, buses, trailers, and heavy vehicles.
• Equipment cleaning: Construction, agricultural, and industrial machinery.
• Commercial washdown: Warehouses, loading docks, and service bays.
• Municipal facilities: Public works equipment and maintenance areas.
• OEM systems: Skid-mounted or fixed wash systems requiring reliable throughput.

Why Choose the RKA65G20HN

The Annovi Reverberi RKA65G20HN is designed for operators who prioritize
uptime, efficiency, and predictable maintenance. Its triplex plunger design
delivers smoother flow than axial pumps, while the slow-speed architecture and premium
materials significantly reduce lifecycle costs.

• High-flow efficiency for faster cleaning and rinsing.
• Reduced heat and vibration for extended component life.
• Nickel-plated brass head and ceramic plungers for durability.
• Bronze connecting rods for strength under continuous duty.
• Excellent foundation for commercial-grade pressure washer systems.

Conclusion

The Annovi Reverberi RKA65G20HN delivers up to 6.6 GPM at 2,000 PSI
in a rugged, slow-speed triplex plunger design built for commercial reliability.
With its 24 mm solid shaft, nickel-plated brass manifold, ceramic plungers, and
service-friendly lubrication system, it is an ideal pump for belt-driven and
gear-driven cleaning systems where long service life and consistent performance
are essential.