RRA4G40-VRT-PKG-A | 4.0 GPM 4000 PSI Triplex Pump, Opposite Thermal Port

RRA4G40-VRT-PKG-A by Annovi Reverberi — Complete VRT Plumbed RRA Series Belt Drive Triplex Pump Package with Anodized Crankcase | 4.0 GPM | 4,000 PSI | Bronze Connecting Rods | Forged Brass Manifold | 24mm Solid Keyed Shaft | VRT Unloader with Easy Start | Auto-Reset Thermal Relief | Inlet Filter | 16,000 Cleaning Units

The RRA4G40-VRT-PKG-A by Annovi Reverberi is a complete, factory-assembled VRT plumbed RRA Series belt drive triplex ceramic plunger pump package engineered for belt and pulley-driven pressure washing systems requiring 4.0 GPM at 4,000 PSI with an anodized crankcase for enhanced surface hardness and corrosion resistance in chemically aggressive, high-humidity, and demanding industrial environments. Rated at 4.0 GPM and 4,000 PSI, the RRA4G40-VRT-PKG-A delivers 16,000 cleaning units — through bronze connecting rods, solid ceramic plungers, a forged brass manifold, stainless steel valves, dual redundant packing, oversized crankshaft bearings, an anodized aluminum crankcase, and a 24mm solid keyed shaft for belt drive pulley systems where operating speed is tuned through pulley ratio selection. As part of Annovi Reverberi’s pump and unloader assemblies stocked and supported by WSHPWR, the RRA4G40-VRT-PKG-A is the complete belt drive answer for contractors, OEM builders, and industrial operators who need 4,000 PSI with factory-integrated VRT pressure management, thermal protection, inlet filtration, and the elevated crankcase protection that aggressive operating environments demand.

The RRA4G40-VRT-PKG-A is a factory-engineered, factory-assembled, factory-tested complete system — designed by Annovi Reverberi in Modena, Italy and distributed across North America by AR North America. The VRT plumbed package format means the unloader is factory-plumbed with the bypass recirculation loop, automatic thermal relief valve, Easy Start bypass circuit, inlet filter, and all hardware connected and verified before shipment. Factory test documentation confirming PSI and GPM performance is included. Protected by a 5-year US limited warranty and built to be fully rebuilt rather than replaced, the RRA4G40-VRT-PKG-A is a decade-of-service investment in the most durable crankcase specification in the RRA belt drive lineup.

Everything in One Box — The RRA4G40-VRT-PKG-A Complete VRT Plumbed Package

Factory-Plumbed. Factory-Tested. Anodized Crankcase. Belt Drive Ready. Nothing Left to Source.

Open the RRA4G40-VRT-PKG-A box and find a complete, factory-plumbed, belt drive-ready installation with anodized crankcase protection:

• RRA4G40 triplex ceramic plunger pump with anodized crankcase and 24mm solid keyed shaft — factory-tested and pre-lubricated with break-in oil. Anodized aluminum crankcase, bronze connecting rods, solid ceramic plungers, forged brass manifold, stainless steel valves, dual redundant packing, oversized crankshaft bearings — factory-installed and factory-verified. 24mm solid keyed shaft accepts belt drive pulleys for operating speed tuned through pulley ratio to any engine platform.
• VRT external bypass unloader — factory-plumbed and pressure-set — the VRT unloader is factory-calibrated for the 4.0 GPM / 4,000 PSI duty point and plumbed into the complete bypass circuit before shipment. Smooth pressure regulation, controlled bypass, and stable output from first startup.
• Easy Start feature — at startup, the VRT bypass circuit opens and the pump starts against zero back pressure. The drive engages freely through belt and pulley without hydraulic resistance — belt tension, pulley loading, and startup torque are at their lowest stress point. Once operating speed is reached, the bypass closes and the system builds to 4,000 PSI. Easier starts. Reduced belt wear. Longer drive component life.
• Exterior bypass recirculation loop — factory-plumbed — the bypass recirculation circuit is factory-assembled and connected, providing controlled water flow during trigger-off intervals and protecting the pump from pressure spikes throughout the cleaning cycle.
• Automatic Thermal Relief Valve (TRV) — factory-installed in bypass circuit — the thermal sensing pill continuously monitors bypass water temperature. When bypass water reaches 124–145°F, the TRV opens automatically — hot water exits through the relief port, and ambient-temperature supply water flows in through the inlet filter to replace it. When temperature returns to the safe operating range, the TRV closes automatically. No manual reset. No intervention. Full thermal protection at all times.
• Inlet filter — factory-included — intercepts particulate and debris in the supply water before it reaches ceramic plungers, stainless valves, and dual redundant packing. Also serves as the ambient cooling water entry point during TRV thermal recovery. Pump protection from day one, already in the box.
• Mounting hardware and fittings — every fitting and fastener required for integration onto contractor skids, trailer frames, stationary platforms, and OEM belt drive installations. Organized in the box.
• Chemical injector and suction hose — not included — the RRA4G40-VRT-PKG-A delivers straight 4,000 PSI high-pressure water output. When detergent capability is required, a downstream chemical injector and suction assembly are sourced separately.
• Factory break-in oil — crankcase pre-filled. Oil sight glass and vented dipstick for ongoing monitoring.
• Factory test documentation — confirming PSI and GPM performance before shipment.
• Owner’s manual with diagrams and maintenance instructions — complete installation, operating, service, and rebuild procedures with Annovi Reverberi part numbers for every serviceable component.

Decoding the RRA4G40-VRT-PKG-A

What Every Segment of This Annovi Reverberi Package Designation Tells You

• RRA — Pump series: RRA Series triplex plunger pump — Annovi Reverberi’s commercial belt drive and pulley drive platform
• 4G — Pump series identifier for this RRA configuration
• 40 — Maximum pressure: 4,000 PSI — 4.0 × 4,000 = 16,000 cleaning units
• VRT — Unloader family: VRT Series external bypass unloader — factory-plumbed with Easy Start, bypass recirculation loop, auto-reset TRV thermal protection, and inlet filter
• PKG — Complete VRT plumbed package: pump plus fully integrated VRT plumbing assembly — everything in one factory-assembled, factory-tested box
• A — Crankcase specification: Anodized crankcase — electrochemically hardened aluminum oxide surface for enhanced corrosion resistance and surface durability in aggressive operating environments

A — The Anodized Crankcase at 4,000 PSI Belt Drive

Electrochemical Surface Hardening. Harder. More Corrosion Resistant. Built for Aggressive Belt Drive Environments.

The A designation on the RRA4G40-VRT-PKG-A identifies the same crankcase upgrade specification found on the RRV4G40-VRT-PKG-A gas engine platform — applied here to the RRA belt drive configuration for operators running the pump in environments where the crankcase exterior is exposed to corrosive chemistry, salt air, fertilizer residue, abrasive particulate, or high-humidity conditions:

• What anodizing is — anodizing is an electrochemical process that converts the surface layer of aluminum into aluminum oxide — a ceramic-like compound significantly harder than the base aluminum beneath it. The anodized layer is a transformation of the surface itself, not a coating. It cannot peel, flake, or chip under normal operating conditions. Every exposed aluminum crankcase surface on the RRA4G40-VRT-PKG-A carries this hardened treatment.
• Enhanced corrosion resistance for belt drive environments — belt drive installations are often exposed to outdoor conditions, agricultural chemical residue, salt air in coastal locations, and industrial vapors. The anodized aluminum oxide surface on the RRA4G40-VRT-PKG-A resists the surface pitting and degradation that affects standard aluminum crankcases in sustained exposure to these environments.
• Increased surface hardness against abrasive contact — in belt drive installations where abrasive debris, grit, or particulate contamination contacts crankcase surfaces during operation, the anodized surface resists the scratching and abrasion that standard aluminum accumulates over time.
• When to specify A over the standard RRA4G40-VRT-PKG — agricultural environments with fertilizer and chemical overspray; coastal and marine-adjacent installations with salt air exposure; industrial environments with airborne chemical or abrasive particulate; food processing facilities with caustic sanitation chemistry in the operating environment; and any belt drive installation where the crankcase exterior will experience sustained exposure to corrosive conditions. Standard aluminum is adequate for clean protected environments — the A anodized crankcase is the correct specification for the conditions above.

Key Specifications

RRA4G40-VRT-PKG-A Technical Details at a Glance

• Flow Rate: 4.0 GPM (gallons per minute)
• Maximum Pressure: 4,000 PSI
• Cleaning Units: 16,000 (GPM × PSI)
• Drive Type: Belt and pulley — operating speed set by pulley ratio selection
• Pump Type: RRA Series triplex ceramic plunger pump — smooth, low-pulsation output; approximately 93% volumetric efficiency
• Shaft: 24mm solid keyed crankshaft — belt drive pulley compatible
• Crankcase: Anodized aluminum — electrochemically hardened surface for enhanced corrosion resistance and surface durability
• Connecting Rods: Bronze — required specification for sustained 4,000 PSI continuous-duty operation
• Manifold: Forged brass — stability under thermal and pressure cycling
• Plungers: Solid ceramic — abrasion and heat resistance; long seal life in demanding duty cycles
• Valves: Stainless steel — reliable sealing and chemical compatibility
• Bearings: Oversized crankshaft — specified to handle belt side-loads and long-term high-duty operation
• Packing: Dual redundant — extended seal life and reduced leakage under high-pressure continuous duty
• Volumetric Efficiency: Approximately 93%
• Lubrication: Vented oil-bath crankcase — continuous lubrication; engineered venting reduces heat buildup and internal pressure spikes
• Unloader System: VRT external bypass — factory-plumbed, pressure-set, and verified
• Easy Start: Bypass-circuit zero-back-pressure startup — drive engages freely through belt and pulley; system builds to pressure at operating speed
• Thermal Relief Valve: Auto-open/auto-reset at 124–145°F — thermal sensing pill; hot water exits, ambient supply water replaces through inlet filter; no manual reset
• Inlet Filter: Included — debris protection and TRV thermal recovery cooling water entry point
• Factory Test Documentation: Included — confirms PSI and GPM performance before shipment
• Chemical Injector: Not included — straight 4,000 PSI water output
• Warranty: 5-year limited warranty — US-based coverage through Annovi Reverberi North America

Engine Sizing — What Drives the RRA4G40-VRT-PKG-A

24mm Solid Shaft. Belt Drive. Pulley Ratio Determines Speed. Size the Engine Correctly.

The RRA4G40-VRT-PKG-A‘s belt drive configuration allows builders to select pulley ratios that optimize engine and pump speed independently. At 4.0 GPM and 4,000 PSI, the engine must be sized appropriately for the duty point:

• Harbor Freight Predator 459cc / 15.8 HP Max Performance — the preferred single-cylinder Predator pairing for the RRA4G40-VRT-PKG-A. At 459cc, the Predator 459cc delivers the torque and displacement margin needed for sustained 4,000 PSI belt drive operation. Direct replacement for Honda GX390, Briggs & Stratton XR2100, and Kohler CH440 — sharing the same mounting pattern at a significantly lower cost.
• Harbor Freight Predator 420cc / 13 HP — compatible with the RRA4G40-VRT-PKG-A via belt drive pulley. Confirm engine HP is appropriate for the intended duty cycle at 4,000 PSI before building. The 459cc Max Performance is the preferred pairing for sustained continuous-duty operation at this pressure rating.
• Harbor Freight Predator 670cc / 22 HP V-Twin — for sustained 4,000 PSI continuous-duty belt drive operations requiring maximum engine overhead. Replaces Honda GX630/660/690 and Briggs & Stratton Vanguard at significant cost savings.
• Honda GX390 — 389cc, 1″ SAE J609a keyway shaft. Compatible via belt drive coupling with the RRA4G40-VRT-PKG-A 24mm solid shaft through pulley and belt arrangement.
• Briggs & Stratton XR2100 / Vanguard series — compatible via belt drive. Direct-mount via pulley arrangement.
• Kohler CH440 / Command series — compatible via belt drive. Direct-mount via pulley arrangement.
• Compatible diesel engines — any diesel engine with sufficient displacement and HP for 4,000 PSI belt drive operation is compatible with the RRA4G40-VRT-PKG-A through appropriate pulley and belt arrangement.

Typical Applications

Where the RRA4G40-VRT-PKG-A Delivers Best Results

• Agricultural belt drive wash systems with chemical and fertilizer exposure — the RRA4G40-VRT-PKG-A’s anodized crankcase provides the corrosion protection margin that standard aluminum cannot match in agricultural environments where chemical overspray, fertilizer residue, and high-humidity conditions are unavoidable
• Coastal and marine-adjacent belt drive installations — salt air accelerates aluminum surface corrosion. The anodized crankcase maintains structural and surface integrity in coastal contractor rigs and marine facility wash systems across extended seasonal service
• Industrial belt drive plant wash systems with airborne particulate — manufacturing environments where abrasive particulate or chemical vapors contact the pump crankcase during operation; the anodized surface resists both chemical attack and abrasive surface wear
• Contractor skid and trailer belt drive rigs — the RRA4G40-VRT-PKG-A’s complete VRT plumbed package, 4,000 PSI output, and anodized crankcase provide serious contractor cleaning performance with the environmental protection margin for demanding outdoor operating conditions
• Fleet wash facilities, agricultural operations, and industrial plant cleaning — belt drive belt drive systems where standardized anodized crankcase packages reduce long-term crankcase maintenance and support consistent equipment appearance across multi-unit installations
• Food and beverage processing facilities — caustic sanitation chemistry in the operating environment justifies the A anodized crankcase specification for sustained daily chemical exposure protection

5-Year US Warranty, National Parts Availability, and Wholesale Pricing

Built in Italy. Anodized Crankcase. Belt Drive Ready. Backed for Five Years.

The RRA4G40-VRT-PKG-A is protected by Annovi Reverberi’s 5-year limited warranty through the US-based warranty and service network administered by AR North America. Every internal wear component — solid ceramic plungers, bronze connecting rods, forged brass manifold seals and o-rings, stainless valve seats, VRT unloader service parts, dual redundant packing kits, replacement inlet filter elements, and oversized crankcase bearings — is stocked nationally through authorized AR North America distribution channels. Contractors, fleet operators, agricultural operations, industrial facility managers, OEM equipment builders, resellers, and volume buyers are invited to contact the WSHPWR wholesale team for pricing on the RRA4G40-VRT-PKG-A and the complete WSHPWR pump package lineup. WSHPWR maintains one of the most complete Annovi Reverberi inventories available through any US web store — with thousands of products in stock and a continually expanding catalog.

16,000 Cleaning Units. 4,000 PSI. 4.0 GPM. Anodized Crankcase. 24mm Belt Drive. VRT Plumbed. Easy Start. Auto-Reset TRV. Inlet Filter. Bronze Rods. Everything in One Box.

Italian Engineering. Anodized Belt Drive Platform. Complete VRT Plumbed Package. 5-Year US Warranty.

When the belt drive installation environment demands more than standard aluminum — the RRA4G40-VRT-PKG-A is the specification. Anodized crankcase. Bronze connecting rods. Forged brass manifold. Dual redundant packing. 93% volumetric efficiency. VRT unloader factory-plumbed. Easy Start zero-back-pressure startup. Automatic thermal relief at 124–145°F. Inlet filter included. Factory test documentation confirming performance. Every fitting and every bolt. Factory-tested. Pre-lubricated. Five-year US warranty. One box. Same-day install.

Volume buyers and OEM builders standardizing on the RRA4G40-VRT-PKG-A can reach the WSHPWR wholesale team directly at wholesale@wshpwr.com to discuss pricing across the complete Annovi Reverberi pump package lineup.