RKV35G40HF24C2I | 3.5 GPM 4000 PSI Triplex Pump Unloader Installed

RKV35G40HF24C2I by Annovi Reverberi — RK Series High-Pressure Triplex Plunger Pump with Gymatic Unloader and Chemical Injector | 3.5 GPM | 4,000 PSI | Bronze Connecting Rods | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive

The RKV35G40HF24C2I by Annovi Reverberi is a high-pressure RK Series triplex ceramic plunger pump engineered for gas and diesel engine-driven commercial and industrial pressure washing systems requiring 3.5 GPM at 4,000 PSI with integrated downstream chemical application capability. Rated at 3.5 GPM and 4,000 PSI at 3,400 RPM, the RKV35G40HF24C2I delivers 14,000 cleaning units — combining 3.5 GPM focused output with 4,000 PSI maximum penetrating impact that tackles baked-on mud, grease, road film, and industrial grime on steel, concrete, and heavy machinery — through a reinforced crankcase with bronze connecting rods, solid ceramic plungers, precision-machined brass manifold, stainless steel check valves, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV35G40HF24C2I features the C2 Gymatic unloader with an active factory-integrated downstream chemical injector, delivering the complete two-mode wash platform — 4,000 PSI high-pressure rinse and low-pressure detergent pre-soak — from a single factory-configured, factory-approved assembly.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV35G40HF24C2I arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with the factory-matched C2I unloader and active downstream chemical injector, and packaged with mounting bolts and fasteners, a vented dipstick, operator’s manual, and full parts schematic, this pump is ready to install from the moment it arrives. Protected by a 5-year US limited warranty through AR North America and built to be fully rebuilt rather than replaced, the RKV35G40HF24C2I is a long-term investment capable of a decade of productive commercial service life.

Factory-Matched and Approved — The RKV35G40HF24C2I Complete Assembly Advantage

No Mismatches. No Guesswork. No Warranty Risk. Just Install and Run.

Every RKV35G40HF24C2I ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly — the C2I unloader and chemical injector selected, calibrated, and installed by Annovi Reverberi as a validated system for this pump’s 3.5 GPM / 4,000 PSI operating point:

• Factory-matched C2I for this operating point — the C2I unloader and integrated chemical injector on the RKV35G40HF24C2I are factory-calibrated by AR North America for the 3.5 GPM / 4,000 PSI duty point. This factory-installed configuration is AR’s approved specification for this pump model. Verify the C2 unloader specification at 4,000 PSI with AR North America before installation — see the unloader section below.
• Factory-approved configuration — the complete RKV35G40HF24C2I assembly is the AR North America-approved specification for this pump model. Operating with the factory-installed components maintains full 5-year warranty coverage. Substituting the factory-installed unloader with aftermarket components voids warranty protection and may produce unsafe system behavior at 4,000 PSI.
• Factory-installed and tested — every RKV35G40HF24C2I undergoes a rigorous six-minute factory test at half load, full load, and up to 150% of rated performance, verifying flow, pressure, and leak-free operation before the pump leaves the AR manufacturing facility
• Eliminates mismatch returns — the factory-matched RKV35G40HF24C2I assembly arrives as a complete, calibrated system. No field assembly variables, no injector plumbing uncertainty, no first-run surprises at maximum operating pressure.
• Stress-free installation — mount the pump to the engine, connect system hoses, connect the detergent supply line to the injector port, add fuel, and start. The RKV35G40HF24C2I arrives engineered, assembled, and ready for field deployment.

Decoding the RKV35G40HF24C2I Model Number

What Every Segment of This AR Pump Designation Tells You

• RKV — Pump series: RK Series triplex plunger pump — AR’s industrial pump platform with reinforced crankcase and front-access piston packing and valve serviceability
• 35G — Flow rate: 3.5 GPM
• 40 — Maximum pressure: 4,000 PSI — 3.5 × 4,000 = 14,000 cleaning units
• H — Pump variant designation: specific pump head or construction variant per AR model code. Verify exact H designation with AR North America for this model — same flag as the adjacent RKV35G40HF24VR3.
• F24 — Flange type: SAE J609A direct-drive flange for RK Series ‘D’ version pumps — close coupling to gas or diesel engines with a 1″ I.D. cylindrical shaft (AR part AR41866)
• C2 — Unloader code: Gymatic — factory-matched and factory-approved unloader assembly for this pump’s 3.5 GPM / 4,000 PSI operating point, with integrated downstream chemical injector. AR’s approved specification for this model.
• I — Chemical injector: Included — downstream soap and chemical injector factory-integrated into the Gymatic C2 unloader assembly, enabling low-pressure detergent application without a separate injector fitting

Key Specifications

RKV35G40HF24C2I Technical Details at a Glance

• Flow Rate: 3.5 GPM (gallons per minute)
• Maximum Pressure: 4,000 PSI
• Cleaning Units: 14,000 (GPM × PSI)
• Operating Speed: 3,400 RPM
• Pump Type: RK Series triplex ceramic plunger pump — three-piston crankshaft-driven design for smooth, low-pulsation high-pressure output
• Pump Variant: H designation — verify specific construction detail with AR North America
• Manifold Material: Precision-machined brass — corrosion-resistant construction for sustained 4,000 PSI cycle integrity
• Plungers: Solid ceramic — exceptional hardness, wear resistance, and thermal shock resistance across extended high-pressure commercial hours
• Connecting Rods: Bronze — premium fatigue strength and wear resistance at 3.5 GPM / 4,000 PSI continuous duty cycles
• Valves: Stainless steel check valves — pre-installed for reliable sealing under continuous high-pressure operation
• Serviceability: Front-access piston packings and valve assemblies; oil sight glass and vented dipstick
• Lubrication: Oil-bath crankcase for continuous bearing and journal lubrication
• Flange: F24 — SAE J609A direct-drive flange, 1″ shaft, gas and diesel engine compatible (AR part AR41866)
• Unloader System: Gymatic C2 with integrated downstream chemical injector — factory-matched and factory-installed for this pump’s 3.5 GPM / 4,000 PSI operating point; AR’s approved specification for this model
• Chemical Injector: Included — I-series downstream venturi injector factory-integrated into C2 Gymatic assembly
• Warranty: 5-year limited warranty — US-based coverage through AR North America; maintained with factory-installed components

What’s Included in the Box

A Complete, Factory-Configured RKV35G40HF24C2I Assembly Ready for Installation

• Factory-matched C2I Gymatic unloader with active chemical injector — factory-installed and calibrated by AR North America for the RKV35G40HF24C2I’s 3.5 GPM / 4,000 PSI operating point; injector port ready for detergent supply line connection
• AR factory break-in oil — crankcase pre-filled to the correct operating level for first startup
• Vented dipstick — fast, accurate crankcase oil level checks with proper crankcase pressure relief
• Clear oil sight glass — at-a-glance visual verification of crankcase lubrication level
• Stainless steel check valves and premium seals — factory-installed for reliable sealing under continuous 4,000 PSI operation
• Mounting bolts and fasteners — hardware sized for F24 SAE J609A direct-drive flange installation on compatible 1″ shaft gas or diesel engines
• Operator’s manual — complete installation, startup, operating, and maintenance procedures for the RKV35G40HF24C2I including oil change intervals, chemical injector care, and winterization protocol
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable RKV35G40HF24C2I component
• Factory test certification — every RKV35G40HF24C2I load-tested in a rigorous six-minute factory test at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

C2I Unloader — Two-Mode Chemical Platform at 4,000 PSI

Factory-Matched. Adjustable. Integrated Chemical Feed. AR Approved.

The C2I Gymatic unloader on the RKV35G40HF24C2I is the factory-installed and factory-approved control assembly for this pump’s 3.5 GPM / 4,000 PSI operating point — calibrated and installed by AR North America as the correct specification for this model:

• Factory-approved for 4,000 PSI operation — the C2I unloader on the RKV35G40HF24C2I is AR North America’s approved specification for this pump model, factory-calibrated for the 3.5 GPM / 4,000 PSI duty point. Do not substitute the factory-installed unloader without AR North America guidance, as doing so voids warranty coverage.
• Integrated downstream injection — the factory-integrated injector in the C2 assembly draws detergent, degreaser, or pre-soak solution from a supply container when the operator switches to low-pressure application mode on the RKV35G40HF24C2I. No separate injector hardware required.
• Two-mode workflow at 3.5 GPM / 4,000 PSI — chemical pre-soak breaks down heavy contamination; full 4,000 PSI / 3.5 GPM rinse removes loosened material at 14,000 cleaning units of maximum-pressure output. Switch between modes without changing equipment or tools on the RKV35G40HF24C2I.
• Adjustable pressure regulation — C2 unloader adjustment on the RKV35G40HF24C2I allows operators to tune working pressure for different nozzle sizes, surface types, and cleaning requirements
• Smooth bypass at 3.5 GPM — trigger-off bypass redirects the full 3.5 GPM flow, protecting the pump from dead-heading during idle intervals. Minimize extended trigger-off idle time.
• Injector maintenance — flush the RKV35G40HF24C2I injector circuit with clean water after every detergent session to preserve long-term venturi function

RK Series Construction — Built for 4,000 PSI Maximum Pressure Commercial Duty

Solid Ceramic. Precision Brass. Bronze Connecting Rods. Front-Access Service.

• Solid ceramic plungers reduce friction, resist heat and abrasion, and protect seal surfaces on the RKV35G40HF24C2I, extending packing life across continuous 4,000 PSI commercial operation. Individual replacement when service limits are reached.
• Bronze connecting rods provide excellent fatigue resistance and strength under continuous high-load 4,000 PSI operation on the RKV35G40HF24C2I, making the pump suitable for long workdays in busy commercial wash environments
• Precision-machined brass manifold is engineered for accurate internal flow paths and tight sealing on the RKV35G40HF24C2I, ensuring reliable 4,000 PSI performance in wet or chemically harsh environments
• Stainless steel check valves maintain tight sealing at 4,000 PSI, helping the RKV35G40HF24C2I hold its performance curve under continuous high-pressure cycling
• Triplex three-plunger design minimizes pulsation, helping spray guns, hoses, and accessories last longer while delivering a consistent spray pattern that speeds up 4,000 PSI cleaning tasks

Front-Access Serviceability and Maintenance

Protecting the RKV35G40HF24C2I Investment Through Planned Maintenance

• Front-access piston packings and valve assemblies — straightforward service procedures on the RKV35G40HF24C2I with widely available AR replacement parts, accessible from the front of the pump with standard tools
• Oil sight glass and vented dipstick — at-a-glance oil level confirmation and simplified oil change procedures on the RKV35G40HF24C2I without removing the pump from service
• Oil service on schedule — break-in oil change at 50 hours; full service every 500 hours or 3–5 months. Clean oil and correct level are especially critical at 4,000 PSI maximum operating pressure.
• Chemical injector circuit flushing — flush the RKV35G40HF24C2I injector circuit with clean water after every detergent session to prevent chemical residue buildup in the venturi passage
• All accessories must be rated above 4,000 PSI — verify hoses, guns, quick couplers, and fittings are rated above the RKV35G40HF24C2I’s maximum operating pressure before operation
• Winterization is mandatory — protect the RKV35G40HF24C2I with RV-grade environmentally safe antifreeze for storage and transport in cold conditions to prevent cracked manifolds and destroyed seals

Typical Applications

Where the RKV35G40HF24C2I Delivers Best Results

• Construction equipment — concrete mixers, forms, excavators, and loaders where 4,000 PSI maximum impact with integrated chemical pre-treatment handles heavy concrete, mud, and jobsite debris on the RKV35G40HF24C2I
• Fleet services — trucks, trailers, buses, and delivery vehicles where high-pressure focused cleaning with two-mode chemical capability handles heavy road film and grease efficiently
• Industrial facilities — plant equipment, wash bays, and production areas where the RKV35G40HF24C2I’s 4,000 PSI output and integrated injector handle greasy industrial residue and contamination
• Agricultural operations — tractors, sprayers, harvesters, and farm implements where the RKV35G40HF24C2I’s integrated chemical injection and maximum pressure handle heavy organic and chemical contamination
• Marine and dockside — boat hulls, dock structures, and marina washdown where 4,000 PSI cleaning and the RKV35G40HF24C2I’s brass manifold construction support effective results in harsh moisture-rich environments
• Mobile contractors — trailer- and truck-mounted rigs serving residential, commercial, and municipal accounts where the RKV35G40HF24C2I’s compact F24 direct-drive footprint and two-mode capability support diverse professional cleaning work

For operators who prefer a fully configured direct-drive system rather than a bare pump assembly, WSHPWR also carries complete gas and diesel engine pump packages ready to mount on a frame or trailer.

5-Year US Warranty, Full Rebuildability, and Wholesale Pricing

Maximum-Pressure RK Series Performance Backed by Domestic Support

The RKV35G40HF24C2I is protected by Annovi Reverberi’s 5-year limited warranty through AR North America’s US-based warranty and service network. Warranty coverage is maintained by operating the RKV35G40HF24C2I with the factory-installed components and following published installation and maintenance requirements. Every internal wear component — solid ceramic plungers, bronze connecting rods, brass manifold seals and o-rings, stainless check valve seats and springs, C2I Gymatic unloader service parts, piston packing kits, and crankcase bearings — is stocked domestically through AR’s authorized distribution channels. Contractors, rental fleet operators, municipal purchasing departments, resellers, and volume buyers are invited to contact the WSHPWR wholesale team for pricing on the RKV35G40HF24C2I and the complete Annovi Reverberi pump and unloader assembly line. WSHPWR maintains one of the most complete AR North America inventories available through any US web store — with thousands of AR products in stock and a continually expanding catalog.

14,000 Cleaning Units. 4,000 PSI. 3.5 GPM. Factory-Matched C2I. Two-Mode Chemical Capability.

Italian Engineering. Maximum-Pressure Factory-Approved Assembly. US Warranty Coverage.

For contractors, industrial maintenance teams, fleet operators, agricultural operations, and mobile professionals who need 3.5 GPM at 4,000 PSI maximum operating pressure — in a factory-matched, factory-approved, and factory-tested complete pump and unloader assembly with integrated downstream chemical injection for two-mode wash capability, verified for flow and pressure through a rigorous six-minute multi-stage factory test, and backed by full 5-year US warranty coverage from one of the global pressure pump industry’s most trusted manufacturers — the RKV35G40HF24C2I is a maximum-pressure two-mode professional cleaning solution. Fourteen thousand cleaning units. Direct drive. One-inch keyway shaft. Factory-matched C2I bypass with integrated injector. Front-access service design. Five years of US warranty. A decade of service life.

Volume buyers, resellers, and rental fleet operators can reach the WSHPWR wholesale team directly at wholesale@wshpwr.com to discuss pricing for quantity purchases across the complete Annovi Reverberi lineup — including pumps, unloader assemblies, and service parts.