RKV4G30ADF24C1I 4.0 GPM 3000 PSI Triplex Pump | 3400 RPM

RKV4G30ADF24C1I by Annovi Reverberi — RK Series Triplex Plunger Pump with Gymatic VR35 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 RKV4G30ADF24C1I by Annovi Reverberi is a professional-grade RK Series triplex ceramic plunger pump engineered for gas and diesel engine-driven commercial and industrial pressure washing systems requiring 4.0 GPM high-volume output at 3,000 PSI with the elevated bypass regulation capacity of the Gymatic VR35 unloader and integrated downstream chemical application capability. Rated at 4.0 GPM and 3,000 PSI at 3,400 RPM, the RKV4G30ADF24C1I delivers 12,000 cleaning units through a reinforced crankcase with oversized bearings, hardened crankshaft, aluminum connecting rods, solid ceramic plungers, brass manifold, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV4G30ADF24C1I carries the C1 unloader designation — confirming the Gymatic VR35 (AR22287), AR’s elevated-capacity Gymatic variant rated to 4,000 PSI and 5 GPM. At 3,000 PSI the VR35 provides 1,000 PSI of operating headroom — the most generous unloader-to-pump margin in this entire product library. This exceptional headroom delivers the most stable, longest-service bypass regulation available at the 3,000 PSI commercial duty point, combined with the active downstream chemical injector for the complete two-mode wash platform from a single factory-configured 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 RKV4G30ADF24C1I arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with the factory-matched Gymatic VR35 C1I 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 RKV4G30ADF24C1I 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 RKV4G30ADF24C1I Complete Assembly Advantage

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

Every RKV4G30ADF24C1I ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly — the Gymatic VR35 unloader and integrated chemical injector selected, calibrated, and installed by Annovi Reverberi specifically for this pump’s 4.0 GPM / 3,000 PSI operating point:

• Factory-matched VR35 and injector — the C1I assembly on the RKV4G30ADF24C1I is not a general-purpose unloader fitted to a pump in the field. Flow capacity, bypass response, pressure regulation range, and chemical injector draw characteristics are all factory-engineered as a complete system for this specific pump’s output.
• Factory-approved configuration — the complete RKV4G30ADF24C1I 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 introduce unpredictable system behavior.
• Factory-installed and tested — every RKV4G30ADF24C1I exits the AR manufacturing facility with the C1I unloader 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.
• 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 RKV4G30ADF24C1I 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 RKV4G30ADF24C1I arrives engineered, assembled, and ready.

Decoding the RKV4G30ADF24C1I 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 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)
• C1 — Unloader variant: Gymatic VR35 — AR’s elevated-capacity Gymatic unloader family rated to 4,000 PSI and 5 GPM. At 3,000 PSI the VR35 provides 1,000 PSI of operating headroom — the most generous margin in this product library. Unloader part reference: AR22287 (adjustable Gymatic VR35, 4,000 PSI, 5 GPM, brass body).
• I — Chemical injector: Included — a downstream soap and chemical injector is factory-integrated into the Gymatic VR35 unloader assembly, enabling low-pressure detergent application without a separate injector fitting

Key Specifications

RKV4G30ADF24C1I 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 — 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 — hard, dimensionally stable sealing surface for long seal life and stable volumetric efficiency
• Connecting Rods: Aluminum (A designation) — engineered for the RKV4G30ADF24C1I’s 3,000 PSI commercial duty point
• Valves: Heavy-duty check valves — stainless construction for consistent sealing 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
• Flange: F24 — SAE J609A direct-drive flange, RK Series ‘D’ version, 1″ shaft, gas and diesel engine compatible (AR part AR41866)
• Unloader System: Gymatic VR35 (C1 code, AR22287) with integrated downstream chemical injector — brass body, adjustable pressure regulation, rated to 4,000 PSI and 5 GPM; 1,000 PSI operating headroom above 3,000 PSI output; factory-matched and factory-installed
• Chemical Injector: Included — downstream venturi injector factory-integrated into Gymatic VR35 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 RKV4G30ADF24C1I Assembly Ready for Installation

• Factory-matched Gymatic VR35 C1I unloader with active chemical injector (AR22287) — selected, calibrated, and installed by AR North America for the RKV4G30ADF24C1I’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 RKV4G30ADF24C1I 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 RKV4G30ADF24C1I component
• Factory test certification — every RKV4G30ADF24C1I load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

Gymatic VR35 C1I — 1,000 PSI Headroom. The Most Generous Pairing in This Library.

Maximum Stability. Maximum Service Life. Two-Mode Chemical Capability.

The Gymatic VR35 (AR22287) on the RKV4G30ADF24C1I is rated to 4,000 PSI and 5 GPM — operating with 1,000 PSI of headroom above 3,000 PSI. No pump in this product library pairs a Gymatic unloader with a wider margin between operating pressure and rated ceiling:

• 1,000 PSI headroom — the widest margin in the library — the VR35 at 3,000 PSI operates 25% below its rated ceiling, producing the most stable, predictable bypass regulation of any unloader configuration at this pressure point. Bypass transitions are smooth and consistent at every trigger release throughout continuous commercial operation on the RKV4G30ADF24C1I.
• Longest unloader service intervals in this pressure class — bypass valve components and seating surfaces in the VR35 operating at 3,000 PSI against a 4,000 PSI-rated circuit experience minimal cumulative stress across high-cycle commercial operation, extending the rebuild interval on the RKV4G30ADF24C1I substantially compared to tighter pairings
• Venturi-driven downstream injection — the factory-integrated injector in the VR35 assembly draws detergent, degreaser, or pre-soak solution from a supply container when the RKV4G30ADF24C1I 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; full 3,000 PSI / 4.0 GPM rinse removes loosened material at 12,000 cleaning units of productive output. The VR35’s stability ensures consistent pressure at the trigger across both modes throughout each work cycle on the RKV4G30ADF24C1I.
• Adjustable then tamper-resistant — operating pressure set on-site and locked before production, 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 RKV4G30ADF24C1I 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 — Oversized Bearings, Hardened Crankshaft, Front-Access Service

Solid Ceramic. Brass Manifold. Aluminum Connecting Rods. Engineered for Continuous Duty.

• Solid ceramic plungers provide a hard, dimensionally stable sealing surface on the RKV4G30ADF24C1I, 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 RKV4G30ADF24C1I 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, extending bearing service life under continuous commercial operation on the RKV4G30ADF24C1I
• Hardened crankshaft provides reliable, fatigue-resistant reciprocating load transfer at the RKV4G30ADF24C1I’s commercial duty speed and pressure
• Brass manifold resists corrosion and maintains sealing tolerances in harsh commercial cleaning environments including chemical wash bays and outdoor installations
• Heavy-duty check valves and seals — factory-installed on the RKV4G30ADF24C1I for immediate startup; deliver consistent sealing and rapid response under high-frequency trigger cycling
• Triplex three-plunger design produces smooth, low-pulsation flow that reduces vibration and component fatigue on hoses, spray guns, and accessories throughout the wash system

Front-Access Serviceability and Maintenance

Protecting the RKV4G30ADF24C1I Investment Through Planned Maintenance

• Front-access piston packings and valve assemblies — packings, valves, and seals on the RKV4G30ADF24C1I are accessible with standard hand tools from the front of the pump without full crankcase disassembly, minimizing service time in commercial and field environments
• External oil service points — oil sight glass and vented dipstick on the RKV4G30ADF24C1I enable at-a-glance level confirmation and simplified oil change procedures 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 critical for bearing and crankshaft durability under commercial duty.
• Chemical injector circuit flushing — flush the RKV4G30ADF24C1I injector circuit with clean water after every detergent session to prevent chemical residue buildup in the VR35 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 on the RKV4G30ADF24C1I
• Winterization is mandatory — protect the RKV4G30ADF24C1I with RV-grade environmentally safe antifreeze for storage and transport in cold conditions to prevent cracked manifolds and destroyed seals

Typical Applications

Where the RKV4G30ADF24C1I Delivers Best Results

• Vehicle and fleet washing — cars, trucks, buses, and fleet wash systems where the RKV4G30ADF24C1I’s factory-integrated injector enables detergent-assisted road film removal at 4.0 GPM / 3,000 PSI without additional hardware
• Construction equipment cleaning — excavators, loaders, bulldozers, and site machinery where chemical pre-treatment through the RKV4G30ADF24C1I’s integrated system handles maximum contamination efficiently
• Agricultural washdown — tractors, sprayers, harvesters, and farm equipment where on-demand detergent application through the factory-integrated C1I assembly handles varied agricultural contamination
• Concrete and hard surface cleaning — sidewalks, driveways, shop floors, and yards where 12,000 CU high-volume output with two-mode chemical capability provides productive commercial cleaning results
• Industrial facilities and heavy-duty wash bays — factories, maintenance shops, and production floor cleaning where the RKV4G30ADF24C1I’s front-access serviceability and VR35 bypass stability minimize maintenance downtime
• Mobile contractor rigs — trailer- and truck-mounted pressure wash systems where the RKV4G30ADF24C1I’s factory-matched assembly, compact F24 direct-drive footprint, and integrated chemical capability support 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 RKV4G30ADF24C1I 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 RKV4G30ADF24C1I 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, heavy-duty check valves and seals, Gymatic VR35 unloader service parts (AR22287), 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 RKV4G30ADF24C1I 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. VR35 — 1,000 PSI Headroom. Factory-Matched. Two-Mode.

Italian Engineering. Maximum Unloader Stability. Factory-Approved Assembly. 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 featuring the Gymatic VR35’s exceptional 1,000 PSI operating headroom for maximum bypass regulation stability and the longest unloader service intervals in this pressure class, integrated downstream chemical injection for two-mode wash capability, and stress-free installation that eliminates mismatch risk and maintains full warranty coverage — the RKV4G30ADF24C1I delivers a properly engineered, completely rebuildable assembly from one of the global pressure pump industry’s most trusted manufacturers. Twelve thousand cleaning units. Direct drive. One-inch keyway shaft. Factory-matched VR35 bypass with integrated injector. One thousand PSI headroom. 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.