RKV4G32D-F24C1 I 4.0 GPM 3200 PSI Triplex Pump | 3400 RPM

RKV4G32D-F24C1 by Annovi Reverberi — RK Series Triplex Plunger Pump with Gymatic VR35 Unloader | 4.0 GPM | 3,200 PSI | Bronze Connecting Rods | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive | No Chemical Injector

The RKV4G32D-F24C1 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 3,200 PSI with the elevated bypass regulation capacity of the Gymatic VR35 unloader and straight high-pressure water delivery. Rated at 4.0 GPM and 3,200 PSI at 3,400 RPM, the RKV4G32D-F24C1 delivers 12,800 cleaning units — through a reinforced crankcase with bronze 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 RKV4G32D-F24C1 carries the C1 unloader designation — confirming the Gymatic VR35, AR’s elevated-capacity Gymatic variant rated to 4,000 PSI and 5 GPM. At 3,200 PSI the VR35 provides 800 PSI of operating headroom — the most generous unloader margin in this entire product library. This substantial headroom delivers the most stable, long-service bypass regulation available at the 3,200 PSI commercial duty point. Unloader part reference: AR22287 (adjustable Gymatic VR35, 4,000 PSI, 5 GPM, brass body). No chemical injector — straight high-pressure water output for operators managing chemical delivery through an external system.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV4G32D-F24C1 arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with a Gymatic VR35 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 RKV4G32D-F24C1 is a long-term investment in a high-output RK Series commercial pump platform capable of a decade of productive service life.

Decoding the RKV4G32D-F24C1 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
• 4G32 — Performance rating: 4.0 GPM flow rate at 3,200 PSI maximum operating pressure — 12,800 cleaning units
• 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 3,200 PSI the VR35 provides 800 PSI of operating headroom — the most generous unloader margin in this product lineup, delivering maximum bypass regulation stability and the longest unloader service intervals at this pressure point. Unloader part reference: AR22287.
• No trailing I suffix — the model terminates at C1, confirming straight 3,200 PSI water output without a factory-installed downstream chemical injector

RKV4G32D-F24C1 — The VR35 Configuration at 3,200 PSI

The RKV 4.0 GPM / 3,200 PSI family includes four configurations. The RKV4G32D-F24C1 is the VR35 no-injector variant — the preferred unloader specification at this pressure point for maximum bypass stability:

• RKV4G32D-F24C1 (this model) — Gymatic VR35 (C1), rated 4,000 PSI, 800 PSI operating headroom. No injector. Maximum unloader stability and longest service intervals in the RKV 3,200 PSI family.
• RKV4G32D-F24C2 — Gymatic 3/B (C2), rated 3,650 PSI, 450 PSI operating headroom. No injector.
• RKV4G32D-F24C2G — Gymatic C2G assembly variant, 450 PSI headroom. No injector.
• RKV4G32D-F24C2I — Gymatic C2 with integrated injector, 450 PSI headroom. Two-mode wash capability.

Key Specifications

RKV4G32D-F24C1 Technical Details at a Glance

• Flow Rate: 4.0 GPM (gallons per minute)
• Maximum Pressure: 3,200 PSI
• Cleaning Units: 12,800 (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 — RK Series construction for continuous commercial duty
• Manifold Material: Brass — corrosion-resistant construction for sustained 3,200 PSI cycle integrity
• Plungers: Solid ceramic — exceptional hardness, wear resistance, and thermal shock resistance across extended commercial operating hours
• Connecting Rods: Bronze — premium fatigue strength and wear resistance at 4.0 GPM / 3,200 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 VR35 (C1 code, AR22287) — brass-body internal bypass unloader, adjustable pressure regulation, rated to 4,000 PSI and 5 GPM; 800 PSI operating headroom above 3,200 PSI output
• Chemical Injector: Not included — model terminates at C1 with no injector suffix
• Warranty: 5-year limited warranty — US-based coverage through AR North America

What’s Included in the Box

A Complete, Factory-Configured RKV4G32D-F24C1 Assembly Ready for Installation

• Factory-installed Gymatic VR35 unloader (C1, AR22287) — pre-mounted and calibrated; no downstream injector port on this RKV4G32D-F24C1 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 RKV4G32D-F24C1 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 RKV4G32D-F24C1 component
• Factory test certification — every RKV4G32D-F24C1 load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

The Gymatic VR35 at 3,200 PSI — 800 PSI Headroom. Maximum Stability in the RKV Lineup.

The Most Generous Unloader Margin in This Product Library. Set It. Lock It. All Day.

The Gymatic VR35 (AR22287) on the RKV4G32D-F24C1 is rated to 4,000 PSI and 5 GPM — operating with 800 PSI of headroom above 3,200 PSI. No other pump in this library pairs a pump and unloader with this degree of separation between operating pressure and rated ceiling:

• 800 PSI headroom — maximum stability zone — the VR35 at 3,200 PSI operates substantially below its rated ceiling, producing the most stable, predictable bypass regulation behavior of any unloader configuration in the RKV 3,200 PSI family. Bypass transitions are smooth and consistent at every trigger release, protecting hoses, spray guns, and downstream accessories throughout every work cycle on the RKV4G32D-F24C1.
• Longest unloader service intervals in this pressure class — bypass valve components, springs, and seating surfaces in the VR35 operating at 3,200 PSI against a 4,000 PSI-rated circuit experience minimal cumulative stress across high-cycle commercial operation on the RKV4G32D-F24C1, extending the service interval between unloader rebuilds substantially compared to tighter pairings
• Consistent working pressure — stable bypass regulation on the RKV4G32D-F24C1 maintains more consistent system pressure during cleaning cycles, improving spray gun performance, surface cleaner rotation, and cleaning consistency on large-surface production jobs
• 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. Minimize extended trigger-off idle time to prevent heat buildup in the bypass circuit.
• No factory-installed downstream injector — the RKV4G32D-F24C1 delivers straight 3,200 PSI water output. Chemical delivery managed externally through a dedicated downstream injector, soft wash system, or separate chemical application method.
• Engine load reduction in bypass — reduced back-pressure lowers engine load and fuel consumption during trigger-off idle intervals on full-day wash operations

Water Supply and Installation Best Practices

Stable Inlet. Clean Filtration. Correct Speed. Long Service Life.

• Supply volume must exceed 4.0 GPM — size tank-fed and gravity-fed systems to sustain flow above the RKV4G32D-F24C1’s demand with margin for surge. Inlet starvation causes cavitation that accelerates valve and packing wear.
• Inlet filtration is routine service — a 50-mesh minimum inline strainer at the RKV4G32D-F24C1 inlet intercepts debris before it reaches valve seats and plunger seal interfaces. Service the strainer on the same schedule as oil changes.
• Low-restriction suction plumbing — oversized suction hose and short, straight inlet runs improve prime stability. Avoid hard 90° elbows immediately at the pump inlet.
• Airtight suction connections — air ingestion through loose fittings or cracked hose causes pressure fluctuation and accelerated packing and valve wear on the RKV4G32D-F24C1. Inspect and retorque suction connections regularly.
• Govern to rated RPM — operate the RKV4G32D-F24C1 at its rated 3,400 RPM. Overspeed reduces packing service life; underspeed reduces output pressure and flow.
• Rigid, square mounting — maintain tight, even flange fasteners to minimize vibration transmission to bearings and shaft alignment under sustained commercial load.

RK Series Construction — Built for 3,200 PSI High-Volume Commercial Duty

• Solid ceramic plungers provide high wear resistance and thermal stability in demanding pressure washing operation on the RKV4G32D-F24C1 across extended commercial operating hours. Individual replacement when service limits are reached.
• Bronze connecting rods support strength and fatigue resistance for long duty cycles at rated speed, distributing forces evenly across the crankshaft of the RKV4G32D-F24C1
• Brass manifold provides corrosion resistance and long-term sealing integrity under fluctuating pressure in commercial wash environments
• Stainless steel valves maintain consistent sealing for steady pressure output under frequent start-stop cycles on the RKV4G32D-F24C1
• Triplex three-plunger design supports smoother flow delivery that helps reduce pulsation stress on hoses, guns, and fittings compared with entry-level pump architectures

Front-Access Serviceability and Maintenance Priorities

Operational Habits That Protect the RKV4G32D-F24C1 Investment

• Front-access piston packings and valve assemblies — packing and valve service on the RKV4G32D-F24C1 is accessible from the front of the pump without full crankcase disassembly, reducing time and labor for the most frequent maintenance events in high-cycle commercial operation
• Daily checks — confirm oil level, inspect for leaks, verify inlet strainer condition, and confirm stable inlet supply before operation on the RKV4G32D-F24C1
• 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.
• Monitor for early packing seepage — minor seepage caught during routine inspection and addressed at a scheduled stop costs a fraction of the downtime from a full packing failure
• Bypass heat management — minimize extended trigger-off idle to reduce thermal stress on seals and extend packing service life on the RKV4G32D-F24C1
• Winterization is mandatory — flush and protect the RKV4G32D-F24C1 with RV-grade environmentally safe antifreeze for storage and transport in cold conditions to prevent cracked manifolds and destroyed seals

Typical Applications

Where the RKV4G32D-F24C1 Delivers Best Results

• Fleet washing — trucks, buses, delivery vans, service bodies, and equipment fleets where the RKV4G32D-F24C1’s consistent 4.0 GPM output and VR35 stable pressure regulation deliver reliable uptime across high-volume daily wash cycles
• Construction equipment and jobsite cleanup — equipment cleaning, concrete tools, machinery degreasing, and heavy-use cleanup where 3,200 PSI with 4.0 GPM coverage speed handles large surface areas efficiently
• Agricultural operations — tractors, implements, barns, wash racks, and sanitation tasks where strong cleaning power and rinse volume are both needed on gas or diesel engine-powered rigs
• Industrial facility wash bays — manufacturing maintenance, plant equipment cleaning, floor and dock washdown, and routine operations support where the RKV4G32D-F24C1’s front-access serviceability and VR35 bypass stability minimize maintenance downtime
• Marine and coastal work — dock and yard cleaning, marine equipment washdown, and coastal environments where professional-grade output and stable pressure control are required
• Soft wash system rinse supply — the RKV4G32D-F24C1 provides clean 3,200 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

High-Output RK Series Performance Backed by Domestic Support

The RKV4G32D-F24C1 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 RKV4G32D-F24C1 — solid ceramic plungers, bronze connecting rods, brass manifold seals and o-rings, stainless valve seats and springs, 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 RKV4G32D-F24C1 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.

12,800 Cleaning Units. 3,200 PSI. 4.0 GPM. VR35 — 800 PSI Headroom. Maximum Stability.

Italian Engineering. Highest Unloader Margin in the RKV Lineup. Front-Access Service. US Warranty Coverage.

For contractors, fleet operators, industrial maintenance teams, agricultural operations, and marine facility professionals who need 4.0 GPM high-volume output at 3,200 PSI — with the Gymatic VR35’s exceptional 800 PSI operating headroom for the most stable bypass regulation and longest unloader service intervals in this pressure class, straight water output for external chemical management, RK Series reinforced crankcase with front-access piston packing and valve serviceability, and bronze connecting rods for commercial-duty fatigue resistance — the RKV4G32D-F24C1 delivers a factory-tested, fully documented, and completely rebuildable assembly from one of the global pressure pump industry’s most trusted manufacturers. Twelve thousand eight hundred cleaning units. Direct drive. One-inch keyway shaft. VR35 bypass — 800 PSI headroom. No fixed 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.