RKV4G30ADF24C2G 4.0 GPM 3000 PSI Triplex Pump | 3400 RPM

RKV4G30ADF24C2G 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 RKV4G30ADF24C2G 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 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 RKV4G30ADF24C2G 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 RKV4G30ADF24C2G carries the C2G unloader designation — confirming the Gymatic assembly configuration in a non-injector arrangement. At 3,000 PSI the Gymatic C2G operates with a comfortable 650 PSI of headroom below its 3,650 PSI rated ceiling — well within AR’s accepted variance — delivering stable, confident bypass regulation with meaningful service life margin. 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 RKV4G30ADF24C2G 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 RKV4G30ADF24C2G 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 RKV4G30ADF24C2G Complete Assembly Advantage

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

Every RKV4G30ADF24C2G ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly — not a collection of separately sourced components that happen to share a parts bin. This distinction matters operationally and financially:

• Factory-matched components — the Gymatic C2G unloader on the RKV4G30ADF24C2G is selected and calibrated by Annovi Reverberi specifically for this pump’s 4.0 GPM / 3,000 PSI operating point. Flow capacity, bypass response, and pressure regulation characteristics are engineered as a system — not approximated from a general-purpose unloader catalog.
• Factory-approved configuration — the complete RKV4G30ADF24C2G assembly is validated and approved by AR North America as the correct specification 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 create unpredictable system behavior.
• Factory-installed and tested — every RKV4G30ADF24C2G exits the AR manufacturing facility with the unloader mounted, calibrated, and load-tested at 50%, 100%, and 150% of rated output. No field assembly, no unloader calibration from scratch, no guesswork about whether the bypass response is correct for this pump.
• Eliminates component mismatch returns — the most common source of pump system returns and warranty disputes is incorrect unloader specification — an unloader rated too low for the operating pressure, a bypass capacity that doesn’t match the pump’s flow, or a pressure setting that can’t be properly adjusted for the installed nozzle. The factory-matched RKV4G30ADF24C2G assembly eliminates all of these failure modes before the pump leaves the box.
• Stress-free installation — mount the pump to the engine, connect the system hoses and inlet supply, add fuel, and start. The RKV4G30ADF24C2G arrives engineered, assembled, and ready. No additional components to source, no assembly variables to manage, no first-run surprises.

Decoding the RKV4G30ADF24C2G 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)
• 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 3,000 PSI the C2G provides 650 PSI of operating headroom — well within AR’s accepted variance.
• No trailing I suffix — model terminates at C2G, confirming straight 3,000 PSI water output without a factory-installed downstream chemical injector

Key Specifications

RKV4G30ADF24C2G 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, consistent 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 operation
• Manifold Material: Brass — corrosion-resistant construction for sustained 3,000 PSI cycle integrity
• Plungers: Solid ceramic — exceptional hardness, wear resistance, and dimensional stability across extended commercial operating hours
• Connecting Rods: Aluminum (A designation) — engineered for the RKV4G30ADF24C2G’s 3,000 PSI duty point
• Valves: Stainless steel — rapid response and consistent sealing under high-frequency trigger cycling
• Serviceability: Front-access piston packings and valve assemblies for simplified field maintenance
• Lubrication: Oil-bath crankcase lubrication with external fill, drain plug, 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; 650 PSI operating headroom above 3,000 PSI output; factory-matched and factory-installed
• Chemical Injector: Not included — C2G is a non-injector configuration
• 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 RKV4G30ADF24C2G Assembly Ready for Installation

• Factory-matched and factory-installed Gymatic C2G unloader — selected, calibrated, and installed by AR North America specifically for the RKV4G30ADF24C2G’s 4.0 GPM / 3,000 PSI operating point; non-injector confirmed
• 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 RKV4G30ADF24C2G including oil change intervals, water supply requirements, packing and valve service guidance, and winterization protocol
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable RKV4G30ADF24C2G component
• Factory test certification — every RKV4G30ADF24C2G load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

The Gymatic C2G Unloader — 650 PSI Headroom at 3,000 PSI

Factory-Matched for This Pump. Adjustable. Tamper-Resistant. Non-Injector.

The Gymatic C2G unloader on the RKV4G30ADF24C2G is factory-selected and factory-installed for this pump’s specific 4.0 GPM / 3,000 PSI operating point — rated to 3,650 PSI with 650 PSI of operating headroom above 3,000 PSI:

• 650 PSI headroom — stable operating zone — the C2G at 3,000 PSI operates well below its rated ceiling, producing stable, confident bypass regulation throughout continuous production wash cycles on the RKV4G30ADF24C2G. Bypass transitions are smooth, protecting hoses, spray guns, and downstream accessories at every trigger release.
• Internal recirculation for thermal management — the C2G’s internal recirculation helps moderate bypass water temperature during intermittent trigger cycling, reducing thermal stress on seals and extending service intervals in high-frequency stop-start commercial use
• Adjustable pressure setting — tune working pressure at the unloader knob to match specific tool requirements: rotary surface cleaners, turbo nozzles, lance-mounted tips, and specialty cleaning attachments on the RKV4G30ADF24C2G
• Tamper-resistant once set — 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
• Non-injector configuration — the RKV4G30ADF24C2G delivers straight 3,000 PSI water output. Chemical delivery managed externally through a dedicated downstream injector or soft wash system when soap application is required.
• Standardized F24 interface — the RKV4G30ADF24C2G’s standardized flange pattern supports interchangeability across multiple engine models in a commercial fleet, simplifying replacement and service planning

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 maintain low wear rates under heat and pressure in the RKV4G30ADF24C2G, improving volumetric efficiency over the pump’s service life and extending the interval between packing replacements. Individual replacement when service limits are reached.
• Aluminum connecting rods (A designation) on the RKV4G30ADF24C2G provide reliable transfer of reciprocating loads at 3,400 RPM at the 3,000 PSI commercial duty point, engineered specifically for this operating specification
• Oversized bearings handle the combined radial and axial loads produced by triplex plunger motion at 3,400 RPM on the RKV4G30ADF24C2G, extending bearing service life under continuous commercial operation
• Hardened crankshaft provides reliable, fatigue-resistant reciprocating load transfer at the RKV4G30ADF24C2G’s commercial duty speed and pressure
• Brass manifold resists corrosion, maintains sealing tolerances, and supports long-term structural stability in harsh commercial cleaning environments
• Stainless steel valves deliver rapid response and clean seating to stabilize pressure during rapid trigger cycling on the RKV4G30ADF24C2G, resisting scale and pitting that cause pressure loss over time
• Triplex three-plunger design reduces pulsation and ensures consistent discharge pressure for precise cleaning control across varied surfaces and tools

Front-Access Serviceability — RK Series Maintenance Advantage

Planned Maintenance Keeps the RKV4G30ADF24C2G Running.

• Front-access piston packings and valve assemblies — packing and valve service on the RKV4G30ADF24C2G is accessible with standard tools from the front of the pump without full crankcase disassembly, reducing time and labor for the most frequent maintenance events
• Oil-bath crankcase with external service points — external oil fill, drain plug, and sight glass on the RKV4G30ADF24C2G simplify preventive maintenance routines and visual condition monitoring 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 protect bearings and crankshaft components under commercial duty.
• Inlet filtration is standard service — clean the RKV4G30ADF24C2G’s inlet strainer on the same schedule as oil changes. Debris-laden inlet water is the most common cause of premature valve and packing wear.
• Winterization is mandatory — flush and protect the RKV4G30ADF24C2G with RV-grade environmentally safe antifreeze for storage and transport in cold conditions to prevent cracked manifolds and destroyed seals.

Typical Applications

Where the RKV4G30ADF24C2G Delivers Best Results

• Fleet washing — trucks, vans, buses, and heavy service vehicles requiring consistent daily cleaning cycles where the RKV4G30ADF24C2G’s 4.0 GPM coverage speed and 3,000 PSI cleaning force deliver fast, reliable throughput
• Construction equipment washdown — loaders, skid steers, backhoes, and support machinery operating in harsh environments where 12,000 CU output handles heavy contamination efficiently
• Agricultural maintenance — tractors, implements, livestock facility sanitation, and general farm equipment where the RKV4G30ADF24C2G’s stable output supports both high-pressure washdown and rinsing on gas or diesel engine-powered rigs
• Industrial bay and facility cleaning — production floors, loading docks, and workshop environments where continuous-duty performance and front-access serviceability minimize maintenance downtime
• Mobile contractor rigs and OEM engine-driven skids — compact F24 direct-drive installations where the RKV4G30ADF24C2G’s factory-matched C2G unloader assembly, standardized flange interface, and simplified plumbing reduce build complexity for contractors and OEM system builders
• Surface cleaner applications — the RKV4G30ADF24C2G’s 4.0 GPM output supports stable rotation on surface cleaners sized for the 3,000 PSI / 4.0 GPM performance envelope

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 RKV4G30ADF24C2G 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 RKV4G30ADF24C2G with the factory-installed components and following published installation and maintenance requirements. Every internal wear component of the RKV4G30ADF24C2G — solid ceramic plungers, 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. Contractors, rental fleet operators, municipal purchasing departments, resellers, and volume buyers are invited to contact the WSHPWR wholesale team for pricing on the RKV4G30ADF24C2G 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 C2G. Non-Injector. Front-Access Service.

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

For contractors, fleet operators, industrial maintenance teams, and OEM system 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 that eliminates component mismatch risk, simplifies installation, and maintains full 5-year warranty protection from day one — the RKV4G30ADF24C2G delivers a properly engineered, stress-free 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 C2G bypass. Non-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.