RKV4G30ADF24C2I | 4.0 GPM 3000 PSI Triplex Pump, Unloader

RKV4G30ADF24C2I by Annovi Reverberi — RK Series Triplex Plunger Pump with Gymatic Unloader and Chemical Injector | 4.0 GPM | 3,000 PSI | Aluminum Connecting Rods | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive

The RKV4G30ADF24C2I by Annovi Reverberi is a commercial-duty RK Series triplex ceramic plunger pump engineered for gas and diesel engine-driven contractor, fleet, and industrial pressure washing systems requiring 4.0 GPM high-volume output at 3,000 PSI with integrated downstream chemical application capability. Rated at 4.0 GPM and 3,000 PSI at 3,400 RPM, the RKV4G30ADF24C2I delivers 12,000 cleaning units through a reinforced crankcase with oversized bearings, hardened crankshaft, aluminum connecting rods, solid ceramic plungers, brass manifold, stainless steel valves, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV4G30ADF24C2I carries the Gymatic (C2) unloader with active integrated downstream chemical injector — delivering the complete two-mode wash platform from a single factory-configured, factory-matched assembly. At 3,000 PSI the C2 Gymatic operates with a full 650 PSI of headroom below its 3,650 PSI rated ceiling — producing stable, confident bypass regulation that extends unloader service intervals in high-cycle commercial environments. The integrated injector enables detergent draw without separate downstream hardware, consolidating pressure regulation and chemical application into a single compact unit that simplifies system plumbing and reduces potential leak points.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV4G30ADF24C2I arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with the factory-matched Gymatic 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 RKV4G30ADF24C2I is a long-term investment in a high-output RK Series commercial pump platform capable of a decade of productive service life.

Factory-Matched and Approved — The RKV4G30ADF24C2I Complete Assembly Advantage

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

Every RKV4G30ADF24C2I ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly — not a collection of separately sourced components assembled in the field:

• Factory-matched unloader and injector — the Gymatic C2I unloader and integrated chemical injector on the RKV4G30ADF24C2I are selected and calibrated by Annovi Reverberi specifically for this pump’s 4.0 GPM / 3,000 PSI operating point. Flow capacity, bypass response, pressure regulation, and injector draw characteristics are engineered as a complete system — not approximated from separate component catalogs.
• Factory-approved configuration — the complete RKV4G30ADF24C2I assembly is validated and approved by AR North America for this duty point. Operating with the factory-installed components maintains full 5-year warranty coverage. Substituting aftermarket or mismatched unloader or injector components can void warranty protection and create unpredictable system behavior.
• Factory-installed and tested — every RKV4G30ADF24C2I exits the AR manufacturing facility with the unloader and injector mounted, calibrated, and load-tested at 50%, 100%, and 150% of rated output. No field assembly, no calibration from scratch, no uncertainty about whether bypass response and chemical draw are correct for this pump.
• Eliminates component mismatch returns — mismatched unloader specifications and incorrectly plumbed injector circuits are among the most common sources of pump system returns and warranty disputes. The factory-matched RKV4G30ADF24C2I assembly eliminates these failure modes before the pump leaves the box.
• Stress-free installation — mount the pump to the engine, connect system hoses and inlet supply, connect the detergent supply line to the injector port, add fuel, and start. The RKV4G30ADF24C2I arrives engineered, assembled, and ready. No additional sourcing, no assembly variables, no first-run surprises.

Decoding the RKV4G30ADF24C2I 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, oversized bearings, and front-access piston packing and valve serviceability
• 4G30 — Performance rating: 4.0 GPM flow rate at 3,000 PSI maximum operating pressure — 12,000 cleaning units
• A — Connecting rod material: Aluminum — per AR North America’s model designation system (A = Aluminum connecting rods)
• D — Shaft version: Direct Gas/Diesel Drive — 1″ hollow keyway crankshaft bore for direct coupling to gasoline or diesel engine 1″ output shafts
• 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 (C2 = Gymatic per AR suffix designation) — Gymatic 3/B series internal bypass unloader, brass body, adjustable pressure regulation, rated to 3,650 PSI. At 3,000 PSI the C2 provides 650 PSI of operating headroom — well within AR’s accepted variance for this pairing.
• I — Chemical injector: Included — a downstream soap and chemical injector is factory-integrated into the Gymatic unloader assembly, enabling low-pressure detergent application without a separate injector fitting

RKV4G30ADF24C2I vs RKV4G30ADF24C2G — The RKV 3,000 PSI Platform Variants

Both pumps share the same RK Series platform, F24 flange, 1″ keyway shaft, oversized bearings, hardened crankshaft, aluminum connecting rods, and 4.0 GPM / 3,000 PSI / 12,000 CU output. The injector is the key difference:

• RKV4G30ADF24C2I (this model) — Gymatic C2 with integrated downstream chemical injector active. Factory-matched two-mode wash capability: 3,000 PSI rinse and low-pressure detergent pre-soak from a single factory-assembled unit.
• RKV4G30ADF24C2G — Gymatic C2G non-injector variant. Straight 3,000 PSI water output for external chemical management or clean water applications.

Key Specifications

RKV4G30ADF24C2I Technical Details at a Glance

• Flow Rate: 4.0 GPM (gallons per minute)
• Maximum Pressure: 3,000 PSI
• Cleaning Units: 12,000 (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
• Crankshaft Bore: 1″ hollow keyway — direct engagement with gas or diesel engine 1″ output shaft
• Crankcase: Reinforced with oversized bearings and hardened crankshaft for continuous commercial duty
• Manifold Material: Brass — corrosion-resistant construction for sustained 3,000 PSI cycle integrity
• Plungers: Solid ceramic — exceptional hardness, dimensional stability, and wear resistance across extended commercial operating hours
• Connecting Rods: Aluminum (A designation) — engineered for the RKV4G30ADF24C2I’s 3,000 PSI commercial duty point
• Valves: Stainless steel — clean seating and rapid response for consistent discharge pressure under high-frequency trigger cycling
• Serviceability: Front-access piston packings and valve assemblies; external oil fill, drain, and sight glass
• Lubrication: Oil-bath crankcase for continuous bearing and journal lubrication during extended operation
• Flange: F24 — SAE J609A direct-drive flange, RK Series ‘D’ version, 1″ shaft, gas and diesel engine compatible (AR part AR41866)
• Unloader System: Gymatic (C2 code) with integrated downstream chemical injector — brass body, adjustable bypass regulation, rated to 3,650 PSI; 650 PSI operating headroom above 3,000 PSI output; factory-matched and factory-installed
• Chemical Injector: Included — downstream venturi injector factory-integrated into Gymatic unloader assembly (“I” suffix confirmed)
• 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 RKV4G30ADF24C2I Assembly Ready for Installation

• Factory-matched Gymatic C2I unloader with active chemical injector — selected, calibrated, and installed by AR North America specifically for the RKV4G30ADF24C2I’s 4.0 GPM / 3,000 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
• 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 RKV4G30ADF24C2I including oil change intervals, chemical injector care, water supply requirements, and winterization protocol
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable RKV4G30ADF24C2I component
• Factory test certification — every RKV4G30ADF24C2I load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

Factory-Matched C2I Unloader — 650 PSI Headroom with Integrated Chemical Feed

Stable Bypass. Two-Mode Capability. Pressure Control and Chemical in One Unit.

The Gymatic (C2I) unloader on the RKV4G30ADF24C2I is factory-matched to this pump’s 4.0 GPM / 3,000 PSI operating point — rated to 3,650 PSI with 650 PSI of operating headroom:

• 650 PSI headroom — stable operating zone — the C2 at 3,000 PSI operates well below its rated ceiling, producing confident, stable bypass regulation throughout continuous production wash cycles on the RKV4G30ADF24C2I
• Venturi-driven downstream injection — the factory-integrated injector draws detergent, degreaser, or pre-soak solution from a supply container when the RKV4G30ADF24C2I operator switches to low-pressure application mode. No separate injector hardware or additional plumbing required.
• Two-mode workflow at 4.0 GPM / 3,000 PSI — chemical pre-soak breaks down grease, road film, and embedded contamination on fleet vehicles, construction equipment, and commercial surfaces; full 3,000 PSI / 4.0 GPM rinse removes loosened material at 12,000 cleaning units of productive output
• Simplified plumbing — consolidating pressure regulation and chemical injection into a single factory-installed unit on the RKV4G30ADF24C2I reduces the total fitting count, minimizes potential leak points, and simplifies troubleshooting compared to separately plumbed injector configurations
• Adjustable then tamper-resistant — locked operating pressure maintained consistently across every operator and every job cycle without re-adjustment or drift
• Smooth internal bypass at 4.0 GPM — trigger-off bypass smoothly redirects the full 4.0 GPM flow, preventing deadhead pressure spikes during idle intervals on production wash jobs
• Injector maintenance — flush the RKV4G30ADF24C2I injector circuit with clean water after every detergent session to preserve long-term venturi function as detailed in the included operator’s manual

RK Series Construction — Built for 3,000 PSI High-Volume Commercial Duty

Solid Ceramic. Brass Manifold. Oversized Bearings. Hardened Crankshaft. Front-Access Service.

• Solid ceramic plungers provide a hard, dimensionally stable sealing surface on the RKV4G30ADF24C2I, supporting long seal life and stable volumetric efficiency under high pressure across extended commercial operating hours. Individual replacement when service limits are reached.
• Aluminum connecting rods (A designation) on the RKV4G30ADF24C2I are engineered for the reciprocating loads of triplex operation at 3,400 RPM at this pump’s 3,000 PSI commercial duty point
• Oversized bearings handle the combined radial and axial loads produced by triplex plunger motion at 3,400 RPM on the RKV4G30ADF24C2I, extending bearing service life under continuous commercial operation
• Hardened crankshaft provides reliable, fatigue-resistant reciprocating load transfer at the RKV4G30ADF24C2I’s commercial duty speed and pressure
• Brass manifold resists corrosion, maintains sealing tolerances, and supports long-term structural stability in harsh commercial cleaning environments — including chemical wash bays and outdoor installations on the RKV4G30ADF24C2I
• Stainless steel valves deliver rapid response and clean seating to stabilize pressure during rapid trigger cycling, resisting scale and chemical exposure throughout the RKV4G30ADF24C2I’s service life
• Triplex three-plunger design reduces pulsation and ensures consistent discharge pressure for precise cleaning control across varied surfaces, tools, and spray patterns

Front-Access Serviceability and Maintenance

Planned Maintenance Protects the RKV4G30ADF24C2I Investment.

• Front-access piston packings and valve assemblies — service technicians can access seals, valves, and plungers on the RKV4G30ADF24C2I with standard hand tools from the front of the pump without full crankcase disassembly
• External oil service points — external oil fill, drain plug, and sight glass on the RKV4G30ADF24C2I simplify preventive maintenance routines and daily oil level confirmation
• 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 critical for bearing and crankshaft durability on the RKV4G30ADF24C2I.
• Chemical injector circuit flushing — flush the RKV4G30ADF24C2I injector circuit with clean water after every detergent session to prevent chemical residue buildup in the venturi passage
• Inlet filtration is standard service — maintain the inlet strainer on the same schedule as oil changes to protect valves and packing from debris-induced wear
• Winterization is mandatory — protect the RKV4G30ADF24C2I with RV-grade environmentally safe antifreeze for storage and transport in cold conditions to prevent cracked manifolds and destroyed seals

Typical Applications

Where the RKV4G30ADF24C2I Delivers Best Results

• Fleet maintenance and vehicle washing — trucks, buses, delivery vans, and service vehicles where the RKV4G30ADF24C2I’s integrated injector enables detergent-assisted road film removal at 4.0 GPM / 3,000 PSI without additional hardware
• Construction and heavy equipment cleaning — loaders, excavators, backhoes, and support machinery exposed to mud, clay, and hydraulic oil where chemical pre-treatment through the factory-integrated injector handles maximum contamination efficiently
• Agricultural equipment washdown — tractors, implements, livestock facilities, and farm support vehicles using appropriate detergents and sanitizers applied through the RKV4G30ADF24C2I’s integrated system
• Industrial shop floors and facility cleaning — production bays, loading docks, and workshop environments where compact engine-driven rigs must deliver consistent high-output two-mode performance
• Professional mobile pressure washing rigs — contractor trailers and skids handling mixed residential, commercial, and industrial work where the RKV4G30ADF24C2I’s factory-matched chemical injection and F24 direct-drive architecture provide fast setup and reliable daily operation

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

Factory-Matched Performance Backed by Domestic Support

The RKV4G30ADF24C2I 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 RKV4G30ADF24C2I with the factory-installed components and following published installation and maintenance requirements. Every internal wear component — solid ceramic plungers, brass manifold seals and o-rings, stainless valve seats and springs, Gymatic C2I 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 RKV4G30ADF24C2I 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.

12,000 Cleaning Units. 3,000 PSI. 4.0 GPM. Factory-Matched C2I. Two-Mode Chemical Capability.

Italian Engineering. Factory-Approved Assembly. No Mismatches. US Warranty Coverage.

For contractors, fleet operators, agricultural teams, and industrial maintenance professionals who need 4.0 GPM high-volume output at 3,000 PSI — in a factory-matched, factory-approved, and factory-tested complete pump and unloader assembly with integrated downstream chemical injection that eliminates mismatch risk, simplifies installation, and maintains full 5-year warranty protection from day one — the RKV4G30ADF24C2I delivers a properly engineered, stress-free two-mode wash solution from one of the global pressure pump industry’s most trusted manufacturers. Twelve thousand cleaning units. Direct drive. One-inch keyway shaft. Factory-matched Gymatic 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.