RG2125-VRT-PKG | Triplex Pump, 5.5 GPM 3600 PSI, 24mm Shaft, VRT Bypass

RG2125-VRT-PKG by Annovi Reverberi — Complete VRT Plumbed High-Flow Triplex Pump Package | 5.5 GPM | 3,600 PSI | Bronze Connecting Rods | Forged Brass Manifold | 24mm Solid Keyed Shaft | Belt Drive | VRT External Bypass Unloader with Easy Start | Auto-Reset Thermal Relief | 19,800 Cleaning Units

The RG2125-VRT-PKG by Annovi Reverberi is a complete, factory-assembled VRT plumbed RG Series high-flow triplex ceramic plunger pump package engineered for belt drive pressure washing systems requiring 5.5 GPM at 3,600 PSI — the output specification for serious concrete restoration, large-surface fleet washing, heavy agricultural sanitation, and high-cycle industrial cleaning programs where both volume and pressure are fully utilized simultaneously. Rated at 5.5 GPM and 3,600 PSI, the RG2125-VRT-PKG delivers 19,800 cleaning units — through bronze connecting rods, solid ceramic plungers, a forged brass manifold, stainless steel valves, dual redundant packing, oversized crankshaft bearings, and a 24mm solid keyed shaft for belt and pulley drive systems where operating speed is tuned precisely through pulley ratio selection to match any engine or motor platform. As part of Annovi Reverberi’s pump and unloader assemblies stocked and supported by WSHPWR, the RG2125-VRT-PKG is the complete high-flow belt drive answer for OEM builders, contractors, fleet operators, and industrial facilities who need 5.5 GPM at 3,600 PSI with factory-integrated VRT pressure management, Easy Start, and automatic thermal protection in one organized box.

The RG2125-VRT-PKG 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 RG2125-VRT-PKG is also a confirmed direct replacement for General Pump models TS2021N and HP5535 — making it the correct specification for upgrading or replacing those platforms with Annovi Reverberi quality and AR North America parts support. Protected by a 5-year US limited warranty and built to be fully rebuilt rather than replaced, the RG2125-VRT-PKG is a decade-of-service investment in the highest-flow belt drive VRT plumbed specification in the lineup.

Everything in One Box — The RG2125-VRT-PKG Complete VRT Plumbed Package

Factory-Plumbed. Factory-Tested. Belt Drive Ready. 5.5 GPM from the First Startup.

Open the RG2125-VRT-PKG box and find a complete, factory-plumbed, high-flow belt drive-ready installation:

• RG2125 triplex ceramic plunger pump with 24mm solid keyed shaft — factory-tested and pre-lubricated with break-in oil. Bronze connecting rods, solid ceramic plungers, forged brass manifold, stainless steel inlet and discharge valves, dual redundant packing, oversized crankshaft bearings — factory-installed and factory-verified. 24mm solid crankshaft accepts belt drive pulleys for operating speed tuned to any engine or motor platform. Ready to mount.
• VRT external bypass unloader — factory-plumbed and pressure-set — the VRT unloader is factory-calibrated for the 5.5 GPM / 3,600 PSI duty point and plumbed into the complete external bypass circuit before shipment. Smooth pressure regulation and controlled bypass from the first startup. By routing bypass water externally, the VRT system keeps heat away from the pump head during bypass intervals — protecting seals, valves, and packing more effectively than internal bypass designs.
• Easy Start feature — at startup, the VRT bypass circuit opens and the pump starts against zero back pressure. At 5.5 GPM output, the mechanical load on the drive belt, pulleys, and bearings at startup is substantial. Easy Start eliminates the hydraulic component of that startup load — the drive starts under zero hydraulic resistance and builds to operating pressure only after the system reaches speed. Easier starts. Reduced belt stress. Longer drive component life.
• Exterior bypass recirculation loop — factory-plumbed — the external 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 to replace it. When temperature returns to the safe operating range, the TRV closes automatically. No manual reset. No intervention required. Critical for high-flow systems where bypass heat builds faster than lower-output platforms.
• 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 RG2125-VRT-PKG delivers straight 3,600 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 dipstick for ongoing monitoring.
• Documentation and service schematics — complete installation, operating, service, and rebuild procedures with Annovi Reverberi part numbers for every serviceable component. Supports integration into control systems including emergency shutoff and low-water protection circuits.

Decoding the RG2125-VRT-PKG

What This Annovi Reverberi Package Designation Tells You

• RG — Pump series: RG Series high-flow triplex plunger pump — Annovi Reverberi’s belt drive commercial high-output platform
• 2125 — Pump series identifier for this high-flow RG configuration
• VRT — Unloader family: VRT Series external bypass unloader — factory-plumbed with Easy Start, external bypass recirculation loop, and auto-reset TRV thermal protection
• PKG — Complete VRT plumbed package: pump plus fully integrated VRT external bypass plumbing assembly — everything in one factory-assembled, factory-tested box
• Direct replacement: Confirmed AR North America-approved replacement for General Pump TS2021N and HP5535 — same 5.5 GPM / 3,600 PSI duty point, same belt drive 24mm solid shaft interface

Key Specifications

RG2125-VRT-PKG Technical Details at a Glance

• Flow Rate: 5.5 GPM (gallons per minute / 21 L/min)
• Maximum Pressure: 3,600 PSI (250 bar)
• Cleaning Units: 19,800 (GPM × PSI)
• Drive Type: Belt and pulley — operating speed set by pulley ratio selection
• Pump Type: RG Series triplex ceramic plunger pump — smooth, low-pulsation high-flow output; approximately 93% volumetric efficiency
• Shaft: 24mm solid keyed crankshaft — belt drive pulley compatible; accepts speed reduction from high-RPM engines for optimized pump life and duty point
• Connecting Rods: Bronze — required specification at 3,600 PSI and above for continuous-duty commercial operation
• Manifold: Forged brass — dimensional stability and corrosion resistance at 3,600 PSI under typical wash chemistry
• Plungers: Solid ceramic — hard, polished working surface resisting scoring and thermal stress; long seal life in demanding duty cycles
• Valves: Stainless steel inlet and discharge — reliable seating and quick response for volumetric efficiency and stable output
• 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-flow continuous duty
• Volumetric Efficiency: Approximately 93%
• Lubrication: Oil-bath crankcase — splash lubrication with controlled oil aeration; consistent film strength across operating temperature range
• Unloader System: VRT external bypass — factory-plumbed, pressure-set, and verified; external routing keeps bypass heat away from pump head
• 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; no manual reset
• Direct Replacement: General Pump TS2021N and HP5535
• Chemical Injector: Not included — straight 3,600 PSI water output
• Warranty: 5-year limited warranty — US-based coverage through Annovi Reverberi North America

Engine and Motor Sizing — What Drives the RG2125-VRT-PKG

19,800 Cleaning Units Require Serious Power. Size the Drive Correctly.

The RG2125-VRT-PKG‘s 5.5 GPM / 3,600 PSI output demands a correctly sized prime mover — and the belt drive platform gives builders the flexibility to optimize the speed relationship between engine and pump through pulley ratio selection. Using the Honda GX390 benchmark of approximately 39 cleaning units per cc of displacement as an engineering reference, the RG2125-VRT-PKG’s 19,800 cleaning unit output requires a minimum of approximately 508cc of engine displacement for adequate power delivery:

• Harbor Freight Predator 670cc / 22 HP V-Twin — the correct Predator pairing for the RG2125-VRT-PKG. At 670cc, the Predator 670cc V-Twin provides the displacement and torque headroom required to drive 5.5 GPM at 3,600 PSI through a belt drive system across full-day continuous-duty cleaning programs. Replaces Honda GX630/660/690 and Briggs & Stratton Vanguard configurations at significant cost savings. Compatible with the RG2125-VRT-PKG 24mm solid shaft via belt drive pulley — no direct shaft coupling required.
• Honda GX630 / GX660 / GX690 — Honda’s V-Twin commercial engine family. The benchmark high-output pairing for the RG2125-VRT-PKG at 5.5 GPM / 3,600 PSI. Proven reliability across commercial and industrial pressure washing applications where maximum output is sustained over long daily duty cycles.
• Briggs & Stratton Vanguard V-Twin series — commercial V-Twin platforms with displacement and HP ratings appropriate for the RG2125-VRT-PKG’s output demands. Belt drive compatible via pulley selection.
• Diesel power units — diesel engines with 1″ or belt-drive compatible shafts and sufficient displacement for 5.5 GPM / 3,600 PSI continuous duty are compatible with the RG2125-VRT-PKG belt drive platform. Industrial skid and trailer installations frequently pair the RG2125-VRT-PKG with diesel power for extended runtime without refueling interruptions.

24mm Solid Shaft — High-Flow Belt Drive Speed Control

Pulley Ratio. Optimized Pump Speed. Engine Running in Its Power Band.

• Speed reduction through pulley ratio for 5.5 GPM duty — at high-flow 5.5 GPM output, pump operating speed directly impacts plunger and seal service life. The RG2125-VRT-PKG’s belt drive platform allows builders to select pulley ratios that run the pump at its optimal speed while the engine operates at peak torque and efficiency. Cooler pump operation. Longer seal intervals. Engine running where it performs best.
• Belt side-load management with oversized bearings — the RG2125-VRT-PKG’s oversized crankshaft bearings are specifically specified to handle the belt side-loads inherent in high-output belt drive installations. At 5.5 GPM, belt tension and side-loading are higher than on lower-output platforms — the bearing specification accounts for this in the RG2125-VRT-PKG’s design.
• Flexible drive platform for any prime mover — gas engine, diesel engine, electric motor, or PTO — any drive source with sufficient power output and a compatible belt drive pulley arrangement works with the RG2125-VRT-PKG 24mm solid shaft. Builders are not limited to a specific engine brand or motor frame.
• OEM standardization at 5.5 GPM — OEM builders designing high-output belt drive pressure washer systems can standardize on the RG2125-VRT-PKG for consistent pump performance, identical service procedures, and AR North America parts availability across every unit in the production run.

Direct Replacement for General Pump TS2021N and HP5535

Same Duty Point. AR North America Parts Support. 5-Year US Warranty.

The RG2125-VRT-PKG is AR North America’s confirmed direct replacement for General Pump TS2021N and HP5535 platforms at the 5.5 GPM / 3,600 PSI belt drive duty point. Operators currently running TS2021N or HP5535 pumps can replace with the RG2125-VRT-PKG for:

• Identical performance output — 5.5 GPM at 3,600 PSI / 250 bar / 19,800 cleaning units — same duty point, same belt drive interface, same 24mm solid keyed shaft geometry
• AR North America domestic parts network — every wear component stocked nationally through authorized AR North America distribution. Ceramic plungers, packing kits, valve assemblies, VRT unloader service parts — available same-week across North America
• 5-year US limited warranty — backed by AR North America’s US-based warranty and service network, versus the support limitations that may apply to discontinued or legacy General Pump configurations
• VRT plumbed package upgrade — the RG2125-VRT-PKG includes the complete VRT external bypass system, Easy Start, and auto-reset TRV — features that may not have been present on legacy TS2021N or HP5535 installations. An upgrade in protection, thermal management, and startup behavior is included with the replacement

Typical Applications

Where the RG2125-VRT-PKG Delivers Best Results

• Concrete restoration, surface prep, and graffiti removal on trailer and skid rigs — at 5.5 GPM and 3,600 PSI, the RG2125-VRT-PKG fully utilizes both pressure and volume on demanding surface work where lower-output packages require multiple passes to achieve the same result
• Fleet wash bays — buses, tractors, trailers, and municipal vehicles — high-flow output covers large vehicle surfaces efficiently in continuous-duty fleet washing programs where the Easy Start and auto-reset TRV support high-cycle daily operation with minimal operator intervention
• Agricultural sanitation — barns, pens, pits, tractors, and implements — 19,800 cleaning unit output handles heavy organic load and large agricultural surface areas in belt drive systems powered by the tractors, engines, and power units already on the farm
• Industrial conveyor, equipment, and machinery washdown systems — high-impact, repeatable 5.5 GPM performance for continuous industrial cleaning programs where production schedules require consistent output across multi-shift operations
• Food and beverage processing wash stations — when paired with appropriate chemical handling, sanitation protocols, and temperature controls, the RG2125-VRT-PKG supports USDA-compliant high-flow washdown programs
• Municipal sidewalk, parking garage, and public works cleaning systems — high-flow belt drive triplex packages as the backbone of municipal cleaning platforms where volume output drives area coverage rates across large public surface programs
• General Pump TS2021N and HP5535 replacement installations — drop-in replacement at the same 5.5 GPM / 3,600 PSI / 24mm belt drive duty point with upgraded VRT plumbed protection and AR North America parts support

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

Built in Italy. High-Flow Belt Drive. Direct TS2021N Replacement. Backed for Five Years.

The RG2125-VRT-PKG 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, 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 RG2125-VRT-PKG 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.

19,800 Cleaning Units. 3,600 PSI. 5.5 GPM. 24mm Belt Drive. VRT External Bypass. Easy Start. Auto-Reset TRV. Bronze Rods. Direct TS2021N Replacement.

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

Stop sourcing VRT plumbing components separately. Stop running undersized pumps on high-flow applications. The RG2125-VRT-PKG is the complete Annovi Reverberi high-flow belt drive VRT plumbed package for contractors, OEM builders, fleet operators, agricultural teams, and industrial system designers who need 5.5 GPM at 3,600 PSI with factory-integrated external bypass pressure management, Easy Start, and automatic thermal protection. Bronze connecting rods. Forged brass manifold. Dual redundant packing. 93% volumetric efficiency. VRT external bypass unloader factory-plumbed. Easy Start zero-back-pressure startup. Automatic thermal relief at 124–145°F. Every fitting and every bolt. Factory-tested. Pre-lubricated. Five-year US warranty. One box. Same-day install. Direct replacement for General Pump TS2021N and HP5535.

Volume buyers and OEM builders standardizing on the RG2125-VRT-PKG can reach the WSHPWR wholesale team directly at wholesale@wshpwr.com to discuss pricing across the complete Annovi Reverberi pump package lineup.