RKV4G30AD-F24C2 | 4.0 GPM 3000 PSI Triplex Pump, Unloader

RKV4G30AD-F24C2 by Annovi Reverberi — RK Series Triplex Plunger Pump with Gymatic Unloader | 4.0 GPM | 3,000 PSI | Aluminum Connecting Rods | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive | No Chemical Injector

The RKV4G30AD-F24C2 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 dependable Gymatic bypass pressure regulation and straight high-pressure water delivery. Rated at 4.0 GPM and 3,000 PSI at 3,400 RPM, the RKV4G30AD-F24C2 delivers 12,000 cleaning units through a reinforced crankcase with oversized bearings, aluminum connecting rods, solid ceramic plungers, precision brass manifold, stainless check valves, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV4G30AD-F24C2 carries the Gymatic (C2) unloader with internal recirculation — factory-matched and factory-installed for this pump’s 4.0 GPM / 3,000 PSI operating point. 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 and meaningful unloader service life margin in high-cycle commercial environments. No chemical injector — chemical delivery managed externally through a dedicated downstream system when soap application is required.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV4G30AD-F24C2 arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with the factory-matched Gymatic C2 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 RKV4G30AD-F24C2 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 RKV4G30AD-F24C2 Complete Assembly Advantage

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

Every RKV4G30AD-F24C2 ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly — the Gymatic C2 unloader selected, calibrated, and installed by Annovi Reverberi specifically for this pump’s 4.0 GPM / 3,000 PSI operating point:

• Factory-matched unloader — the C2 unloader on the RKV4G30AD-F24C2 is not a general-purpose fitting applied in the field. Flow capacity, bypass response characteristics, and internal recirculation routing are factory-engineered to match this pump’s 4.0 GPM design, ensuring predictable pressure behavior across the full range of tools and operating conditions.
• Factory-approved configuration — the complete RKV4G30AD-F24C2 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 components can void warranty protection and introduce unpredictable system behavior.
• Factory-installed and tested — every RKV4G30AD-F24C2 exits the AR manufacturing facility with the C2 unloader mounted, calibrated, and load-tested at 50%, 100%, and 150% of rated output. No field calibration from scratch, no uncertainty about whether bypass response is correct for this pump.
• Eliminates component mismatch returns — incorrect unloader specification and improperly matched bypass capacity are among the most common sources of pump system returns and warranty disputes. The factory-matched RKV4G30AD-F24C2 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, add fuel, and start. The RKV4G30AD-F24C2 arrives engineered, assembled, and ready. No additional component sourcing, no assembly variables, no first-run surprises.

Decoding the RKV4G30AD-F24C2 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 with internal recirculation, 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.
• No trailing I or G suffix — model terminates at C2, confirming straight 3,000 PSI water output without a factory-installed downstream chemical injector. Chemical delivery managed externally when required.

The RKV4G30A Family — Four Configurations at 3,000 PSI

The RKV 4.0 GPM / 3,000 PSI aluminum rod family includes four configurations on the same platform:

• RKV4G30AD-F24C2 (this model) — Gymatic C2, no injector. 650 PSI headroom. Factory-matched for external chemical management or clean water output.
• RKV4G30ADF24C2G — Gymatic C2G assembly variant, no injector. 650 PSI headroom. G designates the specific Gymatic assembly variant.
• RKV4G30ADF24C2I — Gymatic C2 with integrated injector. 650 PSI headroom. Two-mode wash capability.
• RKV4G30ADF24C1I — Gymatic VR35 (C1) with integrated injector. 1,000 PSI headroom. Maximum unloader stability + two-mode capability.

Key Specifications

RKV4G30AD-F24C2 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 — 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 for continuous commercial duty
• Manifold Material: Precision brass — corrosion-resistant, dimensionally stable under high-pressure and thermal cycles
• Plungers: Solid ceramic — hard, dimensionally stable sealing surface for long seal life across extended commercial hours
• Connecting Rods: Aluminum (A designation) — engineered for the RKV4G30AD-F24C2’s 3,000 PSI commercial duty point
• Valves: Stainless check valves — 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
• 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 internal recirculation — 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: 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 RKV4G30AD-F24C2 Assembly Ready for Installation

• Factory-matched Gymatic C2 unloader with internal recirculation — selected, calibrated, and installed by AR North America for the RKV4G30AD-F24C2’s 4.0 GPM / 3,000 PSI 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
• 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 RKV4G30AD-F24C2 including oil change intervals, water supply requirements, and winterization protocol
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable RKV4G30AD-F24C2 component
• Factory test certification — every RKV4G30AD-F24C2 load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

Factory-Matched C2 Unloader — 650 PSI Headroom with Internal Recirculation

Stable Bypass. Thermal Management. Clean Water Output. Set It. Lock It.

The Gymatic C2 unloader on the RKV4G30AD-F24C2 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 and internal recirculation for thermal management:

• 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 RKV4G30AD-F24C2. Bypass transitions are smooth, protecting hoses, spray guns, and downstream accessories at every trigger release.
• Internal recirculation for thermal management — the C2’s internal recirculation helps manage bypass water temperature during intermittent trigger cycling on the RKV4G30AD-F24C2, reducing thermal stress on seals and extending service intervals in high-frequency stop-start commercial use
• Reduced external plumbing complexity — the compact factory-integrated C2 unloader on the RKV4G30AD-F24C2 reduces the number of external hoses, tees, and fittings needed compared to traditional external unloader installations, simplifying system layout and minimizing potential leak points
• 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
• No factory-installed downstream injector — the RKV4G30AD-F24C2 delivers straight 3,000 PSI water output. Compatible with downstream external chemical injectors and soft wash systems when soap application is required.
• 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 — Built for 3,000 PSI High-Volume Commercial Duty

Solid Ceramic. Precision Brass. Oversized Bearings. Front-Access Service.

• Solid ceramic plungers provide dimensional stability and a hard sealing surface on the RKV4G30AD-F24C2, supporting long seal life and stable volumetric efficiency across extended commercial operating hours. Individual replacement when service limits are reached.
• Aluminum connecting rods (A designation) on the RKV4G30AD-F24C2 transmit reciprocating loads from the crankshaft to the plungers 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 on the RKV4G30AD-F24C2, extending bearing service life under continuous commercial operation
• Precision brass manifold resists corrosion, maintains sealing tolerances, and supports structural stability under repeated high-pressure and thermal cycles in demanding commercial cleaning environments
• Stainless check valves deliver rapid response and clean seating for consistent discharge pressure under high-frequency trigger cycling on the RKV4G30AD-F24C2
• Triplex three-plunger design produces low-pulsation output that helps maintain consistent impact at the nozzle across the full spray pattern, reducing streaking and rework on large surface areas
• Internal porting optimized for efficiency — the RKV4G30AD-F24C2’s internal flow path is designed to reduce turbulence and pressure losses, supporting efficient energy transfer from engine to spray impact

Front-Access Serviceability and Maintenance

Planned Maintenance Keeps the RKV4G30AD-F24C2 Running.

• Front-access piston packings and valve assemblies — packings, seals, and valves on the RKV4G30AD-F24C2 are accessible with standard tools from the front of the pump without full crankcase disassembly, minimizing service time in commercial and field environments
• External oil service points — external oil fill, drain plug, and sight glass on the RKV4G30AD-F24C2 simplify preventive maintenance routines and daily level confirmation
• Oil service on schedule — break-in oil change at 50 hours; full service every 500 hours or 3–5 months. Following recommended intervals is critical to preserving bearing and crankshaft integrity in continuous-duty applications on the RKV4G30AD-F24C2.
• Inlet filtration is standard service — maintain the inlet strainer on the same schedule as oil changes. Debris-laden inlet water is a leading cause of valve and packing wear on the RKV4G30AD-F24C2.
• Maintain correct RPM — govern engine speed to the RKV4G30AD-F24C2’s rated 3,400 RPM. Overspeed accelerates wear; underspeed reduces output pressure and flow.
• Winterization is mandatory — protect the RKV4G30AD-F24C2 with RV-grade environmentally safe antifreeze for storage and transport in cold conditions to prevent cracked manifolds and destroyed seals

Typical Applications

Where the RKV4G30AD-F24C2 Delivers Best Results

• Fleet washing — trucks, buses, and delivery vehicles where the RKV4G30AD-F24C2’s consistent 4.0 GPM output and stable C2 pressure regulation deliver reliable high-throughput results with chemical applied through an external downstream system
• Agricultural machinery cleaning — tractors, sprayers, harvesters, and support equipment in mud, dust, and chemical environments where the RKV4G30AD-F24C2’s 12,000 CU output handles large agricultural surface areas on gas or diesel engine-powered rigs
• Construction equipment washdown — loaders, skid steers, excavators, and site machinery exposed to dirt, clay, and hydraulic oil where 3,000 PSI with external chemical management provides effective contamination removal
• Industrial wash bays and facility maintenance — plant maintenance stations, production floor cleaning, and regular equipment washdown where the RKV4G30AD-F24C2’s front-access serviceability and factory-matched unloader minimize maintenance downtime
• Mobile contractor rigs and OEM skids — trailer- and truck-mounted systems built for professional contractors and OEM builders who need a compact, direct-drive pump with factory-matched integrated C2 unloader control and a standardized F24 interface that supports multiple engine configurations
• Soft wash system rinse supply — the RKV4G30AD-F24C2 provides clean 3,000 PSI / 4.0 GPM rinse water while a dedicated soft wash proportioner manages chemical delivery independently

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 RKV4G30AD-F24C2 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 RKV4G30AD-F24C2 with the factory-installed components and following published installation and maintenance requirements. Every internal wear component — solid ceramic plungers, precision 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 RKV4G30AD-F24C2 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 C2. 650 PSI Headroom. Clean Water Output.

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

For contractors, fleet operators, agricultural teams, industrial maintenance professionals, and OEM rig builders 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 internal recirculation for thermal management, straight water output for external chemical systems, RK Series oversized bearing construction with front-access serviceability, and stress-free installation that eliminates mismatch risk and maintains full warranty coverage — the RKV4G30AD-F24C2 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 Gymatic C2 bypass. Non-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.