RK2120N 5.5 GPM 2900 PSI | 1450 RPM Triplex Pump

RK2120N — 5.5 GPM, 2900 PSI Triplex Pump, 1450 RPM

Overview

The Annovi Reverberi RK2120N triplex plunger pump is a high-efficiency, professional-grade solution designed for users who demand strong cleaning performance, smooth operation, and long-term durability. Delivering an impressive 5.5 gallons per minute at 2900 PSI, this pump strikes an excellent balance between water volume and pressure, making it well suited for residential, commercial, and light industrial cleaning applications. Built on Annovi Reverberi’s proven RK series platform, the RK2120N is engineered to perform reliably in environments where consistent results and minimal downtime are essential.

Operating at a low and controlled 1450 RPM, the RK2120N offers a significant advantage over higher-speed pumps. Reduced operating speed lowers internal friction, heat buildup, and vibration, all of which contribute to extended component life and smoother overall performance. This design makes the pump ideal for frequent-use or extended-run applications where longevity and reliability are critical.

With an ECU (Effective Cleaning Units) rating of 16,450, the RK2120N delivers outstanding real-world cleaning efficiency. The combination of high flow and substantial pressure ensures fast coverage of large areas while maintaining the impact force required to remove dirt, grease, mildew, and stubborn buildup. This balance allows operators to work more efficiently, reducing cleaning time without compromising results.

Performance & Cleaning Efficiency

The RK2120N’s 5.5 GPM flow rate makes it particularly effective for applications where water volume plays a major role in productivity. Higher flow improves rinsing power, detergent application, and debris removal, making it easier to clean wide surfaces quickly and evenly. When paired with 2900 PSI, the pump delivers strong cleaning force suitable for both delicate surfaces and tougher cleaning tasks.

This performance profile makes the RK2120N a versatile choice for everything from residential driveways and siding to commercial properties and fleet washing operations. The high ECU rating reflects the pump’s ability to deliver efficient, consistent cleaning power across a wide range of real-world applications.

Triplex Plunger Technology

At the core of the RK2120N is a triplex plunger pump design, widely recognized as the industry standard for durability and performance. The system uses three ceramic plungers driven by a precision-machined crankshaft to produce smooth, consistent water flow with minimal pressure pulsation.

Compared to axial cam pumps, triplex pumps offer longer service life, improved efficiency, and better performance under continuous-duty conditions. Reduced pulsation helps protect hoses, fittings, unloaders, and spray guns, improving overall system reliability and reducing maintenance costs over time.

Construction & Durability

The RK2120N is constructed with high-quality materials selected for strength, wear resistance, and long-term reliability. Ceramic plungers provide exceptional hardness and resistance to abrasion, ensuring reliable sealing performance even during extended use. Premium internal components are engineered to withstand the stresses of high flow and pressure while maintaining smooth operation.

This rugged construction makes the pump well suited for demanding residential use, commercial cleaning services, and light industrial environments. By minimizing wear and maintaining consistent performance, the RK2120N helps operators achieve dependable results day after day.

Low-Speed Operation & Longevity

Operating at 1450 RPM, the RK2120N runs significantly slower than many standard pressure washer pumps. This low-speed operation reduces stress on seals, bearings, and valves, helping extend service life and reduce the frequency of repairs. Lower RPM also results in quieter operation and less vibration, improving operator comfort and reducing strain on mounting structures and system components.

For users who rely on their equipment regularly, these benefits translate into lower operating costs, fewer interruptions, and greater overall system longevity.

Installation & Maintenance

The RK2120N is designed for straightforward installation and easy maintenance. The pump ships from the factory pre-filled with pump oil, allowing for quick startup once installed. An integrated oil sight glass provides a convenient way to monitor oil levels at a glance, helping ensure proper lubrication at all times.

A vented dipstick supports proper crankcase ventilation and simplifies routine oil checks and changes. These user-friendly maintenance features make the RK2120N accessible for both professional technicians and end users, helping keep the pump operating at peak performance with minimal effort.

Key Specifications

• Model: RK2120N
• Pump Type: Triplex Plunger Pump
• Flow Rate: 5.5 GPM
• Maximum Pressure: 2900 PSI
• Operating Speed: 1450 RPM
• Effective Cleaning Units (ECU): 16,450
• Application Range: Residential, Commercial, Light Industrial
• Warranty: 5-Year Manufacturer Coverage

What’s Included

• Factory pre-filled pump oil
• Oil sight glass for easy monitoring
• Vented dipstick for proper lubrication
• Operation manual and detailed schematic
• 5-year manufacturer warranty
• Access to nationwide Annovi Reverberi service centers

Typical Use Cases

• Residential cleaning: patios, driveways, decks, siding
• Vehicle washing: cars, trucks, RVs, boats, and fleets
• Commercial cleaning services
• Fleet and equipment maintenance
• High-flow surface cleaning for large outdoor areas

Why Choose the RK2120N?

The RK2120N delivers professional-grade cleaning performance with an excellent balance of flow, pressure, and efficiency. Its triplex plunger design ensures smooth, reliable operation, while ceramic plungers and premium components enhance durability. The high ECU rating allows operators to clean faster and more effectively, especially when working on large or heavily soiled surfaces.

Backed by Annovi Reverberi’s extensive service network and a 5-year manufacturer warranty, the RK2120N is built to provide long-term value and dependable performance for users who demand consistent results.

Final Thoughts

With a powerful output of 5.5 GPM at 2900 PSI and an impressive ECU rating of 16,450, the Annovi Reverberi RK2120N triplex pump is a versatile, efficient solution for a wide range of cleaning applications. Its low-speed 1450 RPM operation, durable construction, and user-friendly maintenance features make it an excellent choice for residential, commercial, and light industrial pressure washing systems where reliability and performance matter most.