RKV4G35HDF24C2G 4.0 GPM 3500 PSI Triplex Pump | 3400 RPM

RKV4G35HDF24C2G by Annovi Reverberi — RK Series Heavy-Duty Triplex Plunger Pump with Gymatic Unloader | 4.0 GPM | 3,500 PSI | Bronze Connecting Rods | Reinforced Crankcase | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive | No Chemical Injector

The RKV4G35HDF24C2G by Annovi Reverberi is a professional-grade RK Series heavy-duty 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 3,500 PSI with dependable Gymatic bypass pressure regulation and straight high-pressure water delivery. Rated at 4.0 GPM and 3,500 PSI at 3,400 RPM, the RKV4G35HDF24C2G delivers 14,000 cleaning units through a reinforced heavy-duty crankcase with bronze connecting rods, solid ceramic plungers, forged brass manifold, stainless steel valves, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV4G35HDF24C2G carries the C2G unloader designation — confirming the Gymatic assembly configuration in a non-injector arrangement. As the source documentation makes explicit: the C2G is a non-injector style unloader, correct for operators who plan to apply detergent through a separate downstream chemical injector or whose applications require straight high-pressure water output without integrated chemical feed. The Gymatic C2G provides the same adjustable bypass pressure regulation as the standard C2 configuration — rated to 3,650 PSI with 150 PSI of operating headroom above 3,500 PSI — in a specific Gymatic assembly variant.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV4G35HDF24C2G arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with a Gymatic C2G unloader, 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 RKV4G35HDF24C2G is a long-term investment in a high-output RK Series commercial pump platform capable of a decade of productive service life.

Decoding the RKV4G35HDF24C2G 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 for continuous commercial duty
• 4G35 — Performance rating: 4.0 GPM flow rate at 3,500 PSI maximum operating pressure — 14,000 cleaning units
• HD — Heavy Duty specification: elevated internal construction standard — reinforced crankcase and bronze connecting rods for high-output continuous duty in demanding environments
• 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)
• C2G — Unloader code: Gymatic assembly (C2 = Gymatic, G = Gymatic assembly confirmed designation) — non-injector Gymatic unloader configuration, brass body, adjustable pressure regulation, rated to 3,650 PSI. At 3,500 PSI the C2G provides 150 PSI of operating headroom — well within AR’s accepted upside variance for this pairing. Source documentation confirms: no built-in detergent injector.
• No trailing I suffix — consistent with the C2G non-injector designation, this pump delivers straight 3,500 PSI water output without an integrated downstream chemical injector

RKV4G35HDF24C2G vs RKV4G35HD-F24C2 — The RK Series 3,500 PSI HD Non-Injector Variants

Both pumps share the same RK Series HD platform, F24 flange, 1″ keyway shaft, reinforced crankcase, bronze connecting rods, front-access serviceability, and 4.0 GPM / 3,500 PSI / 14,000 CU output without a chemical injector. The C2G suffix distinguishes the specific Gymatic assembly variant:

• RKV4G35HDF24C2G (this model) — C2G Gymatic assembly variant, non-injector confirmed in source documentation. The G suffix identifies the specific Gymatic assembly configuration for this model.
• RKV4G35HD-F24C2 — C2 Gymatic standard designation, non-injector. Same fundamental Gymatic bypass architecture at the same pressure and flow.

Both deliver equivalent Gymatic bypass pressure regulation at 3,500 PSI with 150 PSI of comfortable headroom. Confirm with AR North America if a specific assembly preference between C2 and C2G is relevant for your application before specifying.

Key Specifications

RKV4G35HDF24C2G Technical Details at a Glance

• Flow Rate: 4.0 GPM (gallons per minute)
• Maximum Pressure: 3,500 PSI
• Cleaning Units: 14,000 (GPM × PSI)
• Operating Speed: 3,400 RPM
• Pump Type: RK Series heavy-duty triplex ceramic plunger pump — three-piston crankshaft-driven design for smooth, consistent high-pressure output
• Build Specification: HD (Heavy Duty) — reinforced crankcase and bronze connecting rods
• Crankshaft Bore: 1″ hollow keyway — direct engagement with gas or diesel engine 1″ output shaft
• Crankcase: Reinforced (HD) — heavy-duty construction for continuous commercial duty operation
• Manifold Material: Forged brass — dense, pore-free construction for corrosion resistance and sustained 3,500 PSI cycle integrity
• Plungers: Solid ceramic — exceptional hardness, wear resistance, and thermal shock resistance across extended commercial operating hours
• Connecting Rods: Bronze (HD) — premium fatigue strength and wear resistance at 4.0 GPM / 3,500 PSI continuous duty cycles
• Valves: Stainless steel — precise seating geometry, scale resistance, and reliable performance under continuous cycling
• Serviceability: Front-access piston packings and valve assemblies for simplified field maintenance
• Lubrication: Oil-bath crankcase lubrication with vented dipstick and sight glass
• Flange: F24 — SAE J609A direct-drive flange, RK Series ‘D’ version, 1″ shaft, gas and diesel engine compatible (AR part AR41866)
• Unloader System: Gymatic C2G — non-injector Gymatic assembly, brass body, adjustable bypass regulation, rated to 3,650 PSI; 150 PSI operating headroom above 3,500 PSI output
• Chemical Injector: Not included — C2G is a non-injector configuration; no downstream injector port
• Warranty: 5-year limited warranty — US-based coverage through AR North America

What’s Included in the Box

A Complete, Factory-Configured RKV4G35HDF24C2G Assembly Ready for Installation

• Factory-installed Gymatic C2G unloader — pre-mounted and calibrated for field-ready operation; non-injector configuration confirmed, no downstream injector port on this RKV4G35HDF24C2G variant
• 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 RKV4G35HDF24C2G including oil change intervals, packing and valve service guidance, and winterization protocol
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable RKV4G35HDF24C2G component
• Factory test certification — every RKV4G35HDF24C2G load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

HD Heavy Duty Construction — Reinforced Crankcase and Bronze Connecting Rods

Built for High-Output Continuous Commercial Duty at 3,500 PSI

The RKV4G35HDF24C2G Heavy Duty specification elevates the internal construction at the two points most critical for sustained commercial operation:

Reinforced Crankcase

• Structural rigidity under sustained load — the reinforced crankcase handles the combined mechanical forces of 4.0 GPM volume and 3,500 PSI pressure at 3,400 RPM, maintaining crankshaft and bearing alignment under vibration and thermal expansion cycles during continuous duty operation
• Stable alignment for extended packing life — reinforced crankcase construction maintains plunger bore alignment across high-cycle commercial operation on the RKV4G35HDF24C2G, extending the service interval between packing replacements
• Heat management — appropriate thermal dissipation keeps operating temperatures at bearing and seal interfaces within the RKV4G35HDF24C2G’s design envelope during continuous high-RPM operation

Bronze Connecting Rods

• Fatigue strength at continuous duty — bronze connecting rods on the RKV4G35HDF24C2G resist the repeated load cycling of 4.0 GPM / 3,500 PSI operation, distributing force evenly across the crankshaft and extending connecting rod service life compared to aluminum alternatives in high-cycle commercial environments
• Wear resistance at bearing interfaces — bronze’s tribological properties reduce wear at connecting rod bearing surfaces under the sustained load conditions of continuous commercial operation

The Gymatic C2G Unloader — Non-Injector Gymatic Assembly at 3,500 PSI

Adjustable Bypass. Tamper-Resistant. Non-Injector. External Chemical Compatibility.

The Gymatic C2G unloader on the RKV4G35HDF24C2G is rated to 3,650 PSI with 150 PSI of operating headroom above 3,500 PSI — a well-supported, comfortable pairing confirmed within AR’s accepted variance for this pressure point:

• 150 PSI operating headroom — the C2G at 3,500 PSI operates within its rated envelope with comfortable headroom, producing stable, responsive bypass regulation across continuous production wash cycles on the RKV4G35HDF24C2G
• Non-injector confirmed — the C2G designation explicitly confirms no built-in detergent injection on the RKV4G35HDF24C2G. Operators requiring integrated chemical feed should select a pump with the “I” suffix. The RKV4G35HDF24C2G is correct when using a separate downstream chemical injector or when detergent is not required.
• Compatible with downstream external chemical injectors — the clean water output of the RKV4G35HDF24C2G is fully compatible with separately installed downstream chemical injectors, soft wash proportioners, and dedicated detergent systems when soap application is required
• Adjustable then tamper-resistant — operating pressure set on-site and locked before production operation, 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
• Overpressure protection — protects hoses, spray guns, and downstream accessories from over-pressurization at trigger release throughout the RKV4G35HDF24C2G operating range
• Engine load reduction in bypass — reduced back-pressure lowers engine load and fuel consumption during trigger-off idle intervals on full-day wash operations

RK Series Construction — Solid Ceramic, Forged Brass, Front-Access Service

Every RKV4G35HDF24C2G Component Specified for 3,500 PSI Continuous Commercial Duty

• Solid ceramic plungers in the RKV4G35HDF24C2G resist abrasion, thermal shock, and chemical attack at 3,500 PSI across extended commercial operating hours. Individual replacement when service limits are reached — no full pump replacement required.
• Forged brass manifold provides a dense, pore-free pressure vessel for sustained 3,500 PSI cycling and corrosion resistance in commercial cleaning environments
• Stainless steel check valves maintain precise seating geometry through high-cycle 3,500 PSI / 4.0 GPM operation, resisting calcium scale and pitting that cause pressure loss over time
• Heavy-duty seals and O-rings are selected for durability in harsh commercial wash environments with cleaning chemicals, grit, and frequent start-stop cycles on the RKV4G35HDF24C2G
• Triplex three-plunger design produces smooth, overlapping pressure pulses that reduce pulsation-induced fatigue stress on hoses, spray guns, and fittings connected to the RKV4G35HDF24C2G

Front-Access Serviceability — RK Series Maintenance Advantage

Packing and Valve Service Without Full Disassembly

• Front-access piston packings — packing replacement on the RKV4G35HDF24C2G is accessible from the front of the pump without requiring full crankcase disassembly, reducing time and labor for the most frequent seal maintenance event in high-cycle commercial operation
• Front-access valve assemblies — inlet and outlet valve inspection and replacement accessible without removing the RKV4G35HDF24C2G from the engine mount in most installations, enabling valve service during scheduled maintenance windows
• Reduced maintenance downtime — shorter service windows translate directly into faster return to productive operation for contractor rigs and commercial wash operations running the RKV4G35HDF24C2G at high output daily

F24 SAE J609A — Direct Drive for Gas and Diesel Engines

• Gasoline engine compatibility — direct bolt-up to commercial gas engines with a 1″ cylindrical output shaft and SAE J609A bolt pattern in the horsepower class appropriate for 4.0 GPM / 3,500 PSI loads. Verify engine horsepower before installation.
• Diesel engine compatibility — equally compatible with standard diesel engines equipped with a 1″ crankshaft and SAE J609A bolt pattern for contractor rigs and industrial equipment
• Direct close-coupling — the RKV4G35HDF24C2G mounts face-to-face against the engine with the 1″ hollow keyway crankshaft bore engaging the engine shaft directly, eliminating belt guards, pulleys, and tensioning hardware
• Compact footprint — ideal for skid frames, trailer rigs, and OEM platforms with limited installation space
• Included mounting hardware — bolts and fasteners sized for the F24 SAE J609A bolt pattern are supplied in the box with the RKV4G35HDF24C2G

Typical Applications

Where the RKV4G35HDF24C2G Delivers Best Results

• Heavy machinery and industrial equipment cleaning — construction, mining, and manufacturing equipment where 3,500 PSI penetrates heavy contamination and chemical delivery is managed through a separate downstream system on the RKV4G35HDF24C2G
• Fleet washing with external chemical systems — trucks, trailers, buses, and service vehicles where 4.0 GPM coverage speed and 3,500 PSI cleaning force handle heavy road film with chemical applied through a dedicated downstream injector
• Concrete and paved surface cleaning — sidewalks, parking lots, loading docks, and warehouse floors where 14,000 CU high-volume output provides productive commercial cleaning results
• Commercial facilities and properties — storefronts, shopping centers, garages, and building exteriors where the RKV4G35HDF24C2G’s non-injector architecture allows external chemical management flexibility
• Mobile contractor rigs — trailer and skid-mounted systems where the RKV4G35HDF24C2G’s HD reinforced construction, front-access serviceability, and compact F24 direct-drive footprint support maximum daily uptime
• Agricultural operations — tractors, implements, livestock areas, and processing equipment on gas or diesel engine-powered rigs where maximum volume and elevated pressure handle large surface areas
• Soft wash system rinse supply — the RKV4G35HDF24C2G provides clean 3,500 PSI / 4.0 GPM rinse water while a dedicated soft wash proportioner manages chemical delivery independently

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

Heavy-Duty RK Series Performance Backed by Domestic Support

The RKV4G35HDF24C2G is protected by Annovi Reverberi’s 5-year limited warranty through AR North America’s US-based warranty and service network. Every internal wear component of the RKV4G35HDF24C2G — solid ceramic plungers, bronze connecting rods, forged brass manifold seals and o-rings, stainless valve seats and springs, Gymatic C2G unloader service parts, piston packing kits, and crankcase bearings — is stocked domestically through AR’s authorized distribution channels.

With consistent maintenance — break-in oil change at 50 hours, scheduled oil changes every 500 hours or 3–5 months, regular valve and packing inspection using the front-access design at the service frequency appropriate for 3,500 PSI continuous-duty cycles, and proper winterization using RV-grade environmentally safe antifreeze — the RKV4G35HDF24C2G is engineered for 10 or more years of productive commercial service life. AR North America’s domestic parts depth ensures rebuild kits, plunger sets, packing kits, and Gymatic unloader service components for the RKV4G35HDF24C2G are typically available same-week.

Contractors, rental fleet operators, municipal purchasing departments, resellers, and volume buyers are invited to contact wholesale@wshpwr.com for wholesale and special pricing on the RKV4G35HDF24C2G 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. 3,500 PSI. 4.0 GPM. HD Construction. Gymatic C2G. Non-Injector.

Italian Engineering. Heavy-Duty Platform. Front-Access Service. US Warranty Coverage.

For contractors, fleet operators, industrial maintenance teams, and OEM rig builders who need 4.0 GPM high-volume output at 3,500 PSI — with HD reinforced crankcase and bronze connecting rod construction for continuous commercial duty, Gymatic C2G non-injector bypass regulation with 150 PSI of comfortable headroom, RK Series front-access piston packing and valve serviceability, and straight water output for external chemical management or clean water applications — the RKV4G35HDF24C2G delivers a factory-tested, fully documented, and completely rebuildable assembly from one of the global pressure pump industry’s most trusted manufacturers. Fourteen thousand cleaning units. Direct drive. One-inch keyway shaft. Gymatic C2G bypass. Non-injector configuration. 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.