RKV35G40HDF24C2 3.5 GPM 4000 PSI Triplex Pump | 3400 RPM

RKV35G40HDF24C2 by Annovi Reverberi — RK Series Heavy-Duty Triplex Plunger Pump with Gymatic Unloader | 3.5 GPM | 4,000 PSI | Forged Brass Manifold | Bronze Connecting Rods | Oversized Crankcase | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive | No Chemical Injector

The RKV35G40HDF24C2 by Annovi Reverberi is a heavy-duty 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 the elevated structural construction of the HD specification and dependable Gymatic bypass pressure regulation. Rated at 3.5 GPM and 4,000 PSI at 3,400 RPM, the RKV35G40HDF24C2 delivers 14,000 cleaning units — concentrated 4,000 PSI penetrating impact combined with 3.5 GPM focused output for stripping heavy soil, grease, and buildup from concrete, steel, equipment frames, and fleet vehicles — through an oversized reinforced crankcase with oversized bearings, balanced crankshaft, bronze connecting rods, solid ceramic plungers, forged brass manifold, stainless steel check valves, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV35G40HDF24C2 HD (Heavy Duty) designation elevates the construction standard at the points most critical for sustained maximum-pressure operation — oversized crankcase, oversized bearings, and forged brass manifold. The Gymatic (C2) unloader with internal recirculation is AR North America’s factory-approved specification for this 4,000 PSI model. No chemical injector — straight 4,000 PSI water output for operators managing chemical delivery externally or running hot-water systems where chemical is introduced upstream.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV35G40HDF24C2 arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with the factory-matched Gymatic C2 unloader with internal recirculation, 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 RKV35G40HDF24C2 is a long-term investment in a heavy-duty maximum-pressure RK Series commercial platform capable of a decade of productive service life.

Factory-Matched and Approved — The RKV35G40HDF24C2 Complete Assembly Advantage

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

Every RKV35G40HDF24C2 ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly — the Gymatic C2 unloader with internal recirculation selected, calibrated, and installed by Annovi Reverberi specifically for this pump’s 3.5 GPM / 4,000 PSI operating point:

• Factory-matched C2 for 4,000 PSI — the C2 unloader with internal recirculation on the RKV35G40HDF24C2 is AR North America’s factory-approved specification for this model. Pressure regulation response, bypass characteristics, and internal recirculation routing are factory-calibrated for the 3.5 GPM / 4,000 PSI HD duty point — not approximated from a lower-pressure configuration.
• Factory-approved configuration — the complete RKV35G40HDF24C2 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 the factory-installed unloader voids warranty protection and may produce unsafe pressure behavior at 4,000 PSI.
• Factory-installed and tested — every RKV35G40HDF24C2 exits the AR manufacturing facility with the C2 unloader mounted, calibrated, and load-tested before shipment. The pump arrives verified for flow, pressure, and leak-free operation — no field assembly, no calibration guesswork at maximum operating pressure.
• Eliminates component mismatch returns — the factory-matched RKV35G40HDF24C2 assembly eliminates the most common source of performance problems on 4,000 PSI builds — incorrectly specified or separately sourced unloader components — before the pump leaves the box.
• Stress-free installation — mount the pump to the engine, connect system hoses and inlet supply, add fuel, and start. The RKV35G40HDF24C2 arrives engineered, assembled, and ready. No additional component sourcing, no assembly variables, no first-run surprises.

Decoding the RKV35G40HDF24C2 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
• HD — Heavy Duty construction specification: oversized reinforced crankcase, oversized bearings, balanced crankshaft, and forged brass manifold — the elevated structural standard for sustained maximum-pressure commercial duty. Distinguished from the H (Nickel Plated pump head) designation in other RKV35G40 models.
• F24 — Flange type: SAE J609A direct-drive flange — close coupling to gas or diesel engines with a 1″ I.D. cylindrical shaft (AR part AR41866)
• C2 — Unloader code: Gymatic — AR’s factory-approved unloader specification for this 4,000 PSI HD model, with internal recirculation for bypass thermal management
• No trailing I suffix — model terminates at C2, confirming straight 4,000 PSI water output without a factory-installed downstream chemical injector

Key Specifications

RKV35G40HDF24C2 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 heavy-duty triplex ceramic plunger pump — three-piston crankshaft-driven design for smooth, low-pulsation high-pressure output
• Build Specification: HD (Heavy Duty) — oversized reinforced crankcase, oversized bearings, and balanced crankshaft for sustained 4,000 PSI commercial duty
• Crankshaft Bore: 1″ hollow keyway — direct engagement with gas or diesel engine 1″ output shaft
• Crankcase: Oversized reinforced HD — manages heat and load for continuous-duty maximum-pressure operation
• Bearings: Oversized — support combined radial and axial loads at 4,000 PSI / 3,400 RPM continuous commercial operation
• Manifold Material: Forged brass — dense, pore-free construction for maximum corrosion resistance and pressure cycle integrity at 4,000 PSI
• 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, vented fill cap, and dipstick for easy servicing
• Lubrication: Oil-bath crankcase for continuous bearing and journal lubrication at maximum operating pressure
• Flange: F24 — SAE J609A direct-drive flange, 1″ shaft, gas and diesel engine compatible (AR part AR41866)
• Unloader System: Gymatic C2 with internal recirculation — factory-matched and factory-installed as AR’s approved specification for this 4,000 PSI HD model; adjustable pressure regulation
• Chemical Injector: Not included — no factory-installed downstream injector; chemical delivery managed externally
• 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 RKV35G40HDF24C2 Assembly Ready for Installation

• Factory-matched Gymatic C2 unloader with internal recirculation — selected, calibrated, and installed by AR North America for the RKV35G40HDF24C2’s 3.5 GPM / 4,000 PSI HD operating point; no downstream injector port on this variant
• AR factory break-in oil — crankcase pre-filled to the correct operating level for first startup; installers can mount, plumb, and run initial tests without performing a crankcase fill first
• Vented dipstick and sight glass — daily oil level checks at a glance; operators can spot low-oil conditions before damage occurs on the RKV35G40HDF24C2
• Stainless steel check valves and quality packings — factory-installed for reliable sealing and consistent pressure from first startup
• 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 RKV35G40HDF24C2 including oil change intervals, water supply requirements, and winterization protocol
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable RKV35G40HDF24C2 component
• Factory test certification — every RKV35G40HDF24C2 load-tested before leaving the AR manufacturing facility

HD Heavy Duty Construction — Built for 4,000 PSI Continuous Commercial Duty

Forged Brass. Oversized Bearings. Balanced Crankshaft. Bronze Rods. Maximum Pressure Architecture.

The RKV35G40HDF24C2 HD specification elevates the structural construction at the points most critical for sustained 4,000 PSI operation:

Oversized Reinforced Crankcase with Oversized Bearings

• Oversized crankcase — increased internal volume supports better heat dissipation during continuous 4,000 PSI / 3,400 RPM operation, helping manage operating temperatures across long duty cycles on the RKV35G40HDF24C2
• Oversized bearings — larger bearing contact surfaces distribute the combined radial and axial loads of triplex plunger motion at 4,000 PSI across a wider interface, reducing unit bearing stress and extending bearing service intervals in high-cycle commercial environments
• Balanced crankshaft — precision crankshaft balancing reduces vibration and rotational imbalance at 3,400 RPM, improving bearing life, seal geometry stability, and operator comfort during sustained maximum-pressure operation

Forged Brass Manifold

• Dense, pore-free construction — forged brass eliminates the internal porosity of cast alternatives on the RKV35G40HDF24C2, providing a structurally uniform pressure vessel for 4,000 PSI cycling and maximum corrosion resistance in harsh commercial cleaning environments
• Precision-machined internal flow paths — forged manifold machining maintains tighter dimensional tolerances on valve seat interfaces and plunger cylinder bores, supporting consistent pressure performance over thousands of operating hours

Bronze Connecting Rods and Solid Ceramic Plungers

• Bronze connecting rods on the RKV35G40HDF24C2 provide the fatigue resistance and load-bearing strength required for continuous 4,000 PSI operation, distributing reciprocating forces evenly across the crankshaft
• Solid ceramic plungers resist heat, abrasion, and scoring across extended 4,000 PSI commercial cycles — protecting seals and extending service intervals. Individual replacement when service limits are reached.

The Gymatic Unloader with Internal Recirculation — 4,000 PSI Clean Water Output

Factory-Approved. Thermally Managed Bypass. Adjustable. No Injector.

• AR-approved specification at 4,000 PSI — the C2 Gymatic unloader with internal recirculation is AR North America’s factory-approved configuration for the RKV35G40HDF24C2. Do not substitute without AR North America guidance, as doing so voids warranty coverage.
• Internal recirculation for thermal management — the C2’s internal recirculation on the RKV35G40HDF24C2 senses backpressure and diverts flow into controlled recirculation channels when the trigger is released, holding system pressure at the set point while managing bypass water temperature to reduce heat buildup during idle cycles at 4,000 PSI
• Simplified plumbing — internal recirculation eliminates the external bypass return lines required by non-recirculating designs, simplifying system layout on skid frames and trailers and reducing potential leak points at maximum operating pressure
• Adjustable pressure regulation — dial in the ideal PSI for the nozzle size, surface type, and cleaning task on the RKV35G40HDF24C2; compatible with hot-water skids, surface cleaners, turbo/rotary nozzles, and other productivity accessories when components are rated above 4,000 PSI
• No factory-installed downstream injector — the RKV35G40HDF24C2 delivers straight 4,000 PSI water output. Chemical delivery managed externally through a dedicated downstream system, or upstream via hot-water skid burner chemistry.
• Engine load reduction in bypass — reduced back-pressure lowers engine load and fuel consumption during trigger-off idle intervals on full-day wash operations

Typical Applications

Where the RKV35G40HDF24C2 Delivers Best Results

• Fleet yards and rental equipment depots — the RKV35G40HDF24C2’s 4,000 PSI output and HD heavy-duty construction support dependable high-pressure washing every day across high-volume production wash operations
• Construction companies and concrete contractors — stripping heavy soil, grease, and buildup from concrete pads, equipment frames, forms, and loading docks; compatible with surface cleaners and rotary nozzles for flatwork production cleaning
• Municipalities and industrial plants — plant equipment cleaning, wash bays, production floor washdown, and facility maintenance operations where the RKV35G40HDF24C2’s HD construction, oversized bearings, and balanced crankshaft support continuous multi-shift production
• Agricultural operations — tractors, sprayers, harvesters, and livestock equipment where the RKV35G40HDF24C2’s 4,000 PSI penetrating impact handles the heaviest agricultural contamination on gas or diesel engine-powered rigs
• Professional contractors with external chemical systems — degreasing, graffiti removal, concrete restoration, parking lot and sidewalk cleaning, dumpster pad sanitation, and surface preparation prior to coating or line striping where chemical is delivered through a dedicated downstream system
• Hot-water skid systems — the RKV35G40HDF24C2 is compatible with hot-water skids when supplied with properly rated burner coils and relief devices, making it suitable for the most demanding commercial degreasing applications

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

Heavy-Duty Maximum-Pressure Performance Backed by Domestic Support

The RKV35G40HDF24C2 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 RKV35G40HDF24C2 with the factory-installed components and following published installation and maintenance requirements. Every internal wear component — solid ceramic plungers, bronze connecting rods, forged brass manifold seals and o-rings, stainless check valve seats and springs, Gymatic C2 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 RKV35G40HDF24C2 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. HD Construction. Forged Brass. Factory-Matched C2. No Injector.

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

For contractors, fleet operators, industrial maintenance teams, municipalities, and OEM rig builders who need 3.5 GPM at 4,000 PSI maximum operating pressure — with HD oversized crankcase and bearing construction for sustained continuous-duty operation, forged brass manifold for maximum structural integrity and corrosion resistance, factory-matched Gymatic C2 unloader with internal recirculation as AR’s approved specification for this model, straight water output for external chemical management or hot-water skid integration, and stress-free installation that eliminates mismatch risk and maintains full warranty coverage — the RKV35G40HDF24C2 delivers a properly engineered, completely rebuildable heavy-duty maximum-pressure solution from one of the global pressure pump industry’s most trusted manufacturers. Fourteen thousand cleaning units. Direct drive. One-inch keyway shaft. Factory-matched C2 bypass with internal recirculation. HD construction. No fixed injector. 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.