RKA4G40HNLV Viton Triplex Pump | 4.0 GPM 4000 PSI

RKA4G40HNLV — Annovi Reverberi High-Pressure Triplex Pump with Viton Seals

The Annovi Reverberi RKA4G40HNLV is a premium, commercial-grade triplex plunger pump engineered for high-pressure cleaning systems that demand reliability, chemical resistance, and long service life. Delivering a balanced combination of 4.0 GPM and up to 4,000 PSI, this pump is ideal for professional pressure washing, industrial cleaning, surface preparation, and equipment maintenance applications where consistent pressure and durability are essential.

Designed to operate at a standard 1,750 RPM, the RKA4G40HNLV integrates seamlessly with gasoline or electric power units through its factory-installed gearbox. This gearbox ensures correct pump speed, smooth torque transfer, and reduced mechanical stress, making it an excellent choice for skid-mounted systems, mobile pressure washers, and OEM equipment builds.

Key Specifications

Performance

• Flow rate: 4.0 GPM for efficient, professional-grade cleaning.
• Maximum pressure rating: 4,000 PSI for demanding high-pressure applications.
• Operating speed: 1,750 RPM, optimized for long service life and reduced vibration.

Designed for High-Pressure Efficiency

The RKA4G40HNLV is built around Annovi Reverberi’s proven triplex plunger architecture, which provides smoother flow and reduced pulsation compared to axial or wobble pumps. This balanced pumping action minimizes vibration, protects downstream components, and delivers more consistent cleaning performance at high pressures.

With its ability to sustain high PSI without excessive heat buildup, this pump is well suited for continuous-duty commercial use. Contractors and facilities benefit from improved efficiency, quieter operation, and longer component life, even in demanding daily-use environments.

Mechanical Design

• Drive: Factory-installed gearbox ensures smooth engine coupling, proper speed reduction, and optimal torque transfer.
• Shaft: 24mm solid keyed left-hand shaft, ideal for reverse-drive or mirrored system layouts.
• Head / manifold: Nickel-plated forged brass for exceptional corrosion resistance and structural strength.
• Plungers: Precision ceramic plungers reduce friction and deliver extended wear life.
• Bearings: Oversized ball bearings provide crankshaft stability under continuous high-pressure loads.
• Valves: Stainless steel valves ensure consistent sealing, fast response, and long-term reliability.

Nickel-Plated Brass Manifold

The pump head is constructed from nickel-plated forged brass, combining the strength of brass with enhanced corrosion resistance provided by the nickel finish. This makes the RKA4G40HNLV suitable for harsh environments, variable water quality, and chemical-assisted cleaning processes.

The forged construction improves fatigue resistance under high-pressure cycling, while the smooth internal passages promote efficient water flow and reduced turbulence. These features contribute directly to improved pump efficiency and longer service intervals.

Viton Seals for Chemical and Heat Resistance

Equipped with Viton seals, the RKA4G40HNLV is designed to withstand aggressive detergents, chemicals, and elevated operating temperatures. Viton elastomers offer superior resistance to swelling, cracking, and chemical attack compared to standard sealing materials.

This makes the pump an excellent choice for contractors and facilities that regularly use cleaning chemicals, degreasers, or hot-water systems. The result is improved uptime, fewer seal replacements, and lower long-term maintenance costs.

Precision Ceramic Plungers

The pump’s ceramic plungers provide a smooth, wear-resistant surface that significantly extends seal life and maintains consistent pressure output over time. Ceramic is highly resistant to abrasion and thermal stress, making it ideal for high-pressure applications where reliability is critical.

Combined with the triplex design, these plungers help ensure smooth operation and reduced pulsation, improving both pump longevity and overall system performance.

Integrated Gearbox Advantage

A key advantage of the RKA4G40HNLV is its factory-installed gearbox. This gearbox allows the pump to be paired with higher-speed engines or motors while maintaining the ideal pump RPM. Proper speed reduction reduces internal wear, lowers operating temperatures, and ensures optimal hydraulic performance.

By eliminating the need for external belt drives or custom reduction systems, the gearbox simplifies installation, improves alignment, and enhances reliability in mobile and stationary systems alike.

What’s Included with the RKA4G35NL-CR

• Factory-installed gearbox for simplified setup and precise alignment.
• Pre-installed break-in oil for proper lubrication during initial operation.
• Vented dipstick to maintain balanced crankcase pressure.
• Oil sight glass for quick, accurate oil level monitoring.
• Owner’s manual, exploded schematic, and factory performance test sheet.
• 5-year commercial warranty with U.S.-based support and service.

Ideal Applications

The Annovi Reverberi RKA4G40HNLV is well suited for commercial pressure washing, industrial equipment cleaning, surface preparation, fleet washing, and facility maintenance. Its combination of high pressure, moderate flow, Viton sealing, and gearbox-driven efficiency makes it a dependable choice for professionals who require consistent performance under demanding conditions.

For operators seeking a rugged, high-pressure triplex pump with advanced sealing materials and simplified installation, the RKA4G40HNLV delivers the durability, efficiency, and reliability expected from Annovi Reverberi’s commercial pump lineup.