RKV35G37D-F24C2 | 3400 RPM High-Pressure Triplex Pump Unloader

RKV35G37D-F24C2 by Annovi Reverberi — RK Series Triplex Plunger Pump with Gymatic Unloader | 3.5 GPM | 3,700 PSI | Bronze Connecting Rods | Brass Manifold | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive | No Chemical Injector

The RKV35G37D-F24C2 by Annovi Reverberi is a high-pressure RK Series triplex ceramic plunger pump engineered for gas and diesel engine-driven commercial and industrial pressure washing systems requiring 3.5 GPM at 3,700 PSI with factory-matched Gymatic bypass pressure regulation and straight high-pressure water delivery. Rated at 3.5 GPM and 3,700 PSI at 3,400 RPM, the RKV35G37D-F24C2 delivers 13,950 cleaning units — combining focused 3.5 GPM output with 3,700 PSI penetrating impact for removing heavy buildup, grease, mud, and debris from concrete, equipment, vehicles, and industrial surfaces — through a reinforced crankcase with bronze connecting rods, solid ceramic plungers, brass manifold, precision-machined internal components, and an F24 SAE J609A direct-drive flange for close-coupling to gasoline or diesel engines.

The RKV35G37D-F24C2 ships as a comprehensive, installation-ready package. The factory-installed C2 Gymatic adjustable unloader with internal recirculation provides stable pressure regulation and system protection from first startup. A garden hose adapter with inlet filter, fittings, couplers, mounting hardware, factory break-in oil, and complete documentation are all included — minimizing additional sourcing and simplifying integration into new or replacement pressure washer systems.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the RKV35G37D-F24C2 is protected by a 5-year US limited warranty through AR North America and built to be fully rebuilt rather than replaced. A long-term investment in a high-output RK Series commercial platform capable of a decade of productive service life.

Factory-Matched and Approved — The RKV35G37D-F24C2 Complete Assembly Advantage

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

Every RKV35G37D-F24C2 ships as a factory-matched, factory-approved, and factory-installed complete pump and unloader assembly:

• Factory-matched C2 for 3,700 PSI — the C2 Gymatic unloader with internal recirculation is factory-calibrated for this pump’s 3.5 GPM / 3,700 PSI operating point as a complete system. Pressure regulation response and bypass characteristics are set at the factory — not approximated in the field.
• Factory-approved configuration — the complete assembly is AR North America’s validated specification for this model. Operating with the factory-installed components maintains full 5-year warranty coverage.
• Factory-installed and tested — every unit exits the AR manufacturing facility with the C2 unloader mounted, calibrated, and tested for flow, pressure, and leak-free operation before shipment.
• Eliminates mismatch returns — incorrect unloader specification is the most common source of system returns. The factory-matched assembly eliminates this before the pump leaves the box.
• Stress-free installation — mount to the engine, connect system hoses, add fuel, and start. The RKV35G37D-F24C2 arrives engineered, assembled, and ready.

Decoding the RKV35G37D-F24C2 Model Number

What Every Segment of This AR Pump Designation Tells You

• RKV — Pump series: RK Series triplex plunger pump — AR’s commercial industrial pump platform with front-access piston packing and valve serviceability
• 35G — Flow rate: 3.5 GPM
• 37 — Maximum pressure: 3,700 PSI — 3.5 × 3,700 = 13,950 cleaning units
• D — Shaft version: Direct Gas/Diesel Drive — 1″ hollow keyway crankshaft bore for direct coupling to engine output shafts per AR North America model designation convention
• 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 model with internal recirculation for bypass thermal management
• No trailing I suffix — model terminates at C2, confirming straight 3,700 PSI water output without a factory-installed downstream chemical injector

Key Specifications

RKV35G37D-F24C2 Technical Details at a Glance

• Flow Rate: 3.5 GPM (gallons per minute)
• Maximum Pressure: 3,700 PSI
• Cleaning Units: 13,950 (GPM × PSI)
• Operating Speed: 3,400 RPM
• Pump Type: RK Series triplex ceramic plunger pump — three-piston crankshaft-driven design for smooth, low-pulsation output
• Crankshaft Bore: 1″ hollow keyway — direct engagement with engine 1″ output shaft
• Manifold Material: Brass — corrosion-resistant construction for sustained 3,700 PSI cycle integrity
• Plungers: Solid ceramic — exceptional wear resistance and thermal stability
• Connecting Rods: Bronze — premium fatigue strength and wear resistance at 3.5 GPM / 3,700 PSI continuous duty cycles
• Internal Components: Precision-machined for smooth operation and consistent performance under load
• Serviceability: Front-access piston packings and valve assemblies; oil sight glass and vented dipstick
• Lubrication: Oil-lubricated crankcase for reliable performance under load
• Flange: F24 — SAE J609A direct-drive flange, 1″ shaft, gas and diesel engine compatible (AR part AR41866)
• Unloader System: Gymatic C2 with internal recirculation — adjustable pressure regulation; factory-matched and factory-installed as AR’s approved specification for this model
• Chemical Injector: Not included — straight 3,700 PSI water output; chemical delivery managed externally
• Warranty: 5-year limited warranty — US-based coverage through AR North America

What’s Included in the Box

A Complete, Installation-Ready RKV35G37D-F24C2 Package

• Factory-matched Gymatic C2 unloader with internal recirculation — installed and calibrated by AR North America for the 3.5 GPM / 3,700 PSI operating point
• Garden hose adapter with inlet filter — simplifies water supply connection and provides first-stage inlet filtration at startup
• Required fittings and couplers — system integration hardware included to minimize additional sourcing
• Mounting bolts and hardware — sized for F24 SAE J609A direct-drive flange installation on compatible engines
• AR factory break-in oil — crankcase pre-filled to the correct operating level for first startup
• Oil sight glass and vented dipstick — daily oil level monitoring and simplified oil change procedures
• Operator’s manual — complete installation, startup, operating, and maintenance procedures
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable component

Gymatic C2 Unloader with Internal Recirculation — 3,700 PSI Pressure Control

Factory-Approved. Adjustable. Thermally Managed Bypass. Clean Water Output.

• Internal recirculation for bypass thermal management — the C2’s internal recirculation routes bypass water through controlled channels when the trigger is released on the RKV35G37D-F24C2, managing temperature during idle cycles and reducing stress on valves and seals compared to non-recirculating designs
• Simplified plumbing — internal recirculation eliminates the external bypass return lines required by non-recirculating unloader designs, reducing leak points and installation complexity on skid frames and trailer systems
• Adjustable pressure regulation — dial in the ideal operating PSI for different nozzle sizes, surface types, and cleaning tasks. Compatible with surface cleaners, rotary nozzles, and contractor spray tips when properly sized for 3,700 PSI.
• System protection — the C2 unloader diverts flow safely when the trigger is released, preventing dead-heading and protecting hoses, guns, and downstream accessories from pressure spikes throughout the RKV35G37D-F24C2’s operating range
• No factory-installed injector — straight 3,700 PSI water output. Chemical delivery managed externally through a dedicated downstream injector or soft wash system when soap application is required.

Typical Applications

Where the RKV35G37D-F24C2 Delivers Best Results

• Commercial pressure washing contractors — building exteriors, concrete surfaces, vehicle washing, and general commercial cleaning where focused 3,700 PSI impact with external chemical management delivers professional results
• Industrial facility and equipment cleaning — heavy machinery, production equipment, and facility surfaces where the RKV35G37D-F24C2’s 13,950 CU output handles industrial contamination efficiently
• Fleet, truck, and heavy vehicle washing — frames, undercarriages, and panel surfaces where 3,700 PSI penetrating impact handles road film and grease with chemical applied through an external system
• Municipal maintenance operations — the RKV35G37D-F24C2’s comprehensive included package and installation-ready configuration streamline deployment in municipal fleet and facility maintenance programs
• Construction site cleanup — concrete tools, forms, and jobsite equipment where high-pressure focused output handles heavy contamination between jobs
• OEM pressure washer manufacturing — compact F24 direct-drive footprint, factory-matched C2 assembly, and comprehensive included hardware make the RKV35G37D-F24C2 a practical platform for OEM pressure washer builds

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 RKV35G37D-F24C2 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 — solid ceramic plungers, bronze connecting rods, brass manifold seals and o-rings, precision-machined valve seats, 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 RKV35G37D-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.

13,950 Cleaning Units. 3,700 PSI. 3.5 GPM. Factory-Matched C2. Installation-Ready Package.

Italian Engineering. Factory-Approved Assembly. Comprehensive Included Hardware. US Warranty Coverage.

For contractors, fleet operators, industrial maintenance teams, municipalities, and OEM builders who need 3.5 GPM at 3,700 PSI in a factory-matched, factory-approved, and completely installation-ready package with Gymatic C2 internal recirculation bypass, garden hose adapter with inlet filter, required fittings and couplers, straight water output for external chemical management, and full 5-year US warranty coverage from one of the global pressure pump industry’s most trusted manufacturers, the RKV35G37D-F24C2 delivers a properly engineered, completely rebuildable high-pressure cleaning solution. Direct drive. One-inch keyway shaft. Factory-matched C2 bypass. No fixed injector. Five years of US warranty. A decade of service life.

Volume buyers can reach the WSHPWR wholesale team directly at wholesale@wshpwr.com to discuss pricing for quantity purchases across the complete Annovi Reverberi lineup.