SXMV3G40DVR3IDR 3.0 GPM 4000 PSI Pump | VR3 IDR Version

SXMV3G40DVR3IDR by Annovi Reverberi — Triplex Plunger Pump with Gymatic VR35 Unloader and Integrated Dump Regulator | 3.0 GPM | 4,000 PSI | 24mm Solid Keyed Shaft | Gas and Diesel Engine Drive

The SXMV3G40DVR3IDR by Annovi Reverberi is a premium SXMV Series triplex ceramic plunger pump engineered for gas and diesel engine-driven industrial and commercial pressure washing systems requiring 4,000 PSI maximum pressure and the advanced pressure management of AR’s Integrated Dump Regulator system — in a 3.0 GPM configuration that delivers 12,000 cleaning units of productive output. The SXMV3G40DVR3IDR is built around a 24 mm solid keyed shaft — a European-standard projecting shaft configuration that couples to engine drives via keyway hub or flexible coupling rather than hollow bore engagement — giving this pump a distinct installation profile from hollow-shaft XMV models and broadening its compatibility across a wider range of gas and diesel engine coupling systems.

What makes the SXMV3G40DVR3IDR distinct within the SXMV 4,000 PSI family is the combination of the lower 3.0 GPM flow rate — reducing engine horsepower requirements while maintaining full 4,000 PSI maximum pressure — and the VR3 Gymatic VR35 unloader with Integrated Dump Regulator (IDR), AR’s advanced bypass pressure management assembly that provides controlled, smooth pressure release at the 4,000 PSI operating point for extended seal longevity and consistent system pressure stability.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the SXMV3G40DVR3IDR arrives as a complete, factory-tested assembly. Pre-filled with AR break-in oil, equipped with the VR3 IDR unloader system, 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. Every SXMV3G40DVR3IDR undergoes a six-minute factory load test at 50%, 100%, and 150% of rated output before shipment. Protected by a 5-year US limited warranty through AR North America and built to be fully rebuilt rather than replaced, the SXMV3G40DVR3IDR is a long-term investment in maximum-pressure commercial pump performance.

Decoding the SXMV3G40DVR3IDR Model Number

What Every Segment of This AR Pump Designation Tells You

The SXMV3G40DVR3IDR encodes pump series, output, shaft type, unloader family, and IDR configuration directly. Reading each segment before specifying confirms the pump’s unique shaft configuration and pressure management system:

• S — Series prefix: SXMV high-pressure series — AR’s elevated-duty XM platform variant engineered for 4,000 PSI continuous commercial operation
• XMV — Pump family: XM Series triplex plunger pump with forged brass manifold construction
• 3G40 — Performance rating: 3.0 GPM flow rate at 4,000 PSI maximum operating pressure — 12,000 cleaning units
• D — Shaft version: Direct Drive — in this configuration paired with the 24 mm solid keyed shaft, the “D” designation covers direct coupling arrangements including solid projecting shaft configurations used with keyway hub or flexible coupling drive systems
• VR3 — Unloader family: Gymatic VR35 — AR’s elevated-capacity Gymatic unloader variant rated to 4,000 PSI and 5 GPM, matched to the SXMV3G40DVR3IDR’s maximum operating pressure
• IDR — Integrated Dump Regulator: the advanced pressure management component that provides controlled, smooth pressure release during bypass transitions at 4,000 PSI, reducing pressure spike severity and extending seal and valve service life at maximum operating pressure
• No standalone “I” suffix — the model terminates at VR3IDR without a separate chemical injector designation. This pump delivers straight high-pressure water output. Operators requiring integrated downstream chemical injection should select the SXMV variant with the “I” suffix.

The 24 mm Solid Keyed Shaft — A Critical Installation Distinction

The SXMV3G40DVR3IDR uses a 24 mm solid keyed shaft — a fundamentally different coupling architecture from the hollow-bore hollow-shaft configurations used on all other pumps in this library. Understanding this distinction before ordering and installation is essential:

• Solid projecting shaft — the 24 mm keyed shaft projects outward from the pump crankcase and engages the drive system via a keyway hub, flexible coupling, or similar external coupling component fitted to the engine or motor output. The engine shaft does not insert into the pump; instead, the pump shaft inserts into or couples to a hub on the drive side.
• Broader engine and drive compatibility — the 24 mm solid keyed shaft is a European-standard dimension used across a wide range of gas and diesel engine configurations, gear reducers, and power take-off systems where keyway coupling is the standard interface. This gives the SXMV3G40DVR3IDR wider compatibility across international and specialty engine platforms than standard SAE J609A hollow-bore configurations.
• No F-flange designation — because the SXMV3G40DVR3IDR uses a solid projecting shaft rather than a hollow bore that receives an engine shaft through a face flange, there is no F-flange designation in the model number. The coupling hardware — keyway hub, flexible coupler, or equivalent — is selected to match the specific engine or motor output shaft diameter and configuration.
• Installation verification required — confirm that your drive system is designed for coupling to a 24 mm solid keyed shaft before ordering the SXMV3G40DVR3IDR. This shaft configuration is not interchangeable with hollow-bore hollow-shaft pump installations without appropriate coupling hardware.

Key Specifications

SXMV3G40DVR3IDR Technical Details at a Glance

• Flow Rate: 3.0 GPM (gallons per minute)
• Maximum Pressure: 4,000 PSI
• Cleaning Units: 12,000 (GPM × PSI)
• Operating Speed: 3,400 RPM
• Pump Type: Triplex ceramic plunger pump — three-piston crankshaft-driven design for smooth, consistent maximum-pressure output
• Shaft Type: 24 mm solid keyed shaft — projecting shaft for keyway hub or flexible coupling to gas or diesel engine drive systems
• Manifold Material: Forged brass — dense, pore-free construction for corrosion resistance and sustained 4,000 PSI cycle integrity
• Plungers: Solid ceramic — exceptional hardness, wear resistance, and dimensional stability across extended maximum-pressure commercial operating hours
• Valves: Stainless steel — precise seating geometry, scale resistance, and reliable performance under continuous 4,000 PSI cycling
• Unloader System: Gymatic VR35 (VR3 code) with Integrated Dump Regulator (IDR) — brass-body unloader, adjustable pressure regulation, rated to 4,000 PSI and 5 GPM
• Chemical Injector: Not included — model terminates at VR3IDR with no separate injector suffix
• Factory Testing: 6-minute load test — 2 minutes at 50%, 2 minutes at 100%, 2 minutes at 150% of rated output
• Warranty: 5-year limited warranty — US-based coverage through AR North America with domestic parts and service support

What’s Included in the Box

A Complete, Factory-Configured SXMV3G40DVR3IDR Assembly Ready for Installation

Every SXMV3G40DVR3IDR ships fully assembled and field-ready:

• Factory-installed Gymatic VR35 IDR unloader system — pre-mounted with Integrated Dump Regulator active; no downstream injector port on this SXMV3G40DVR3IDR variant
• AR factory break-in oil — crankcase pre-filled to the correct operating level for first startup without modification
• Vented dipstick — enables fast, accurate crankcase oil level checks while maintaining proper crankcase pressure relief during operation
• Clear oil sight glass — at-a-glance oil level monitoring without removing the dipstick cap
• Mounting bolts and fasteners — hardware for secure installation; coupling hardware for the 24 mm solid keyed shaft must be sourced to match the specific drive system configuration
• Operator’s manual — complete installation, startup, operating, and maintenance procedures for the SXMV3G40DVR3IDR including oil change intervals, winterization protocol, and coupling guidance
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable SXMV3G40DVR3IDR component for field and shop reference
• Factory test certification — every SXMV3G40DVR3IDR load-tested at 50%, 100%, and 150% of rated output for six minutes before leaving the AR manufacturing facility

VR3 IDR — The Integrated Dump Regulator at 4,000 PSI / 3.0 GPM

Why the IDR Matters at Maximum Pressure — Even at 3.0 GPM

At 4,000 PSI, the energy stored in the pressurized water column and system plumbing at the moment the spray trigger is released creates a bypass transition challenge that standard internal bypass unloaders manage less smoothly than the IDR-equipped system. The Integrated Dump Regulator on the SXMV3G40DVR3IDR addresses this at the 3.0 GPM flow rate:

• Controlled pressure dump at bypass — when the spray trigger is released, the IDR provides a managed, regulated pressure dump to the bypass circuit, reducing the pressure spike magnitude at bypass engagement at 4,000 PSI on the SXMV3G40DVR3IDR
• Reduced downstream component stress — smoother bypass transitions on the SXMV3G40DVR3IDR reduce the instantaneous pressure shock transmitted to hoses, spray guns, and quick-connect fittings at the trigger-off moment on every work cycle
• Extended seal and valve service life — the IDR’s managed dump reduces peak stress at each bypass transition in the SXMV3G40DVR3IDR, extending the service interval between seal and valve replacements in high-cycle production environments
• Consistent working pressure — more stable system pressure during SXMV3G40DVR3IDR cleaning cycles reduces pressure fluctuation that affects spray gun performance and cleaning consistency on large-surface production jobs
• Tamper-resistant once set — once operating pressure is locked on the SXMV3G40DVR3IDR, the VR35 IDR assembly holds that setting consistently across every operator and every shift
• No chemical injector port — the SXMV3G40DVR3IDR delivers straight 4,000 PSI water output. Chemical delivery managed externally through a dedicated downstream injector, soft wash system, or separate chemical application method

3.0 GPM at 4,000 PSI — The Lower-Flow Maximum-Pressure Configuration

Why 3.0 GPM at 4,000 PSI Is the Right Specification for Some Applications

The SXMV3G40DVR3IDR‘s 3.0 GPM / 4,000 PSI output delivers 12,000 cleaning units — 25% less volume per hour than the 4.0 GPM / 4,000 PSI SXMV models at the same maximum pressure. That lower flow rate is a deliberate specification advantage for specific applications:

• Lower engine horsepower requirement — driving a pump at 3.0 GPM and 4,000 PSI requires meaningfully less engine horsepower than at 4.0 GPM and the same pressure. The SXMV3G40DVR3IDR opens maximum-pressure 4,000 PSI operation to a wider range of engine pairings including engines correctly sized for 3.0 GPM output that would be under-rated at 4.0 GPM.
• Precision cleaning at maximum pressure — some applications — concrete joint cleaning, graffiti removal, detail work, and surface preparation — benefit from the concentration of 4,000 PSI at 3.0 GPM rather than the broader coverage of 4.0 GPM. The SXMV3G40DVR3IDR delivers maximum pressure with more focused water delivery per spray pass.
• Water supply and containment considerations — operations in areas with limited water supply, metered water sources, or strict effluent containment requirements benefit from the SXMV3G40DVR3IDR’s lower flow rate while retaining full maximum-pressure cleaning force.
• 24 mm solid shaft drive compatibility — the SXMV3G40DVR3IDR’s solid keyed shaft configuration broadens engine and drive system compatibility for operations where keyway coupling is preferred or where specific international engine platforms are the operational standard.

SXMV Series Construction — Every SXMV3G40DVR3IDR Component Built for 4,000 PSI

Solid Ceramic. Forged Brass. Stainless Steel. Built to Be Rebuilt.

• Solid ceramic plungers in the SXMV3G40DVR3IDR resist the substantially elevated seal contact forces and high-velocity water flow at 4,000 PSI. Solid ceramic hardness and dimensional stability are required to maintain precision plunger geometry across the high cycle counts of maximum-pressure commercial operation. Individual replacement when service limits are reached — no full SXMV3G40DVR3IDR pump replacement required.
• Forged brass manifold on the SXMV3G40DVR3IDR provides a dense, pore-free pressure vessel engineered for the cyclic structural stress of 4,000 PSI continuous commercial duty. Forged brass density and pore-free structure are required at this operating point — cast aluminum manifolds are not structurally appropriate for sustained 4,000 PSI operation.
• Stainless steel valves on the SXMV3G40DVR3IDR resist substantially higher seating forces and scale accumulation rates at 4,000 PSI than at lower operating pressures, maintaining precise seating geometry through hundreds of thousands of maximum-pressure cycles.
• Triplex three-plunger design produces overlapping pressure pulses that reduce pulsation-induced fatigue stress on hoses, spray guns, and fittings connected to the SXMV3G40DVR3IDR throughout the wash system.

Typical Applications

Where the SXMV3G40DVR3IDR Delivers Best Results

• Precision maximum-pressure cleaning — concrete joint cleaning, graffiti removal, surface preparation, and detail restoration work where 4,000 PSI concentrated output from the SXMV3G40DVR3IDR is required with more controlled water delivery than 4.0 GPM platforms provide
• Engine-sizing constrained maximum-pressure applications — operations requiring 4,000 PSI output from the SXMV3G40DVR3IDR where the available engine is correctly sized for 3.0 GPM but not rated for the additional horsepower demand of 4.0 GPM at 4,000 PSI
• Industrial equipment cleaning — excavators, loaders, construction machinery, and heavy plant equipment where maximum pressure and IDR-managed bypass transitions protect system components during intensive continuous-use cleaning cycles on the SXMV3G40DVR3IDR
• Fleet and vehicle washing — trucks, buses, and service vehicles where the SXMV3G40DVR3IDR’s maximum pressure penetrates heavy contamination and the IDR’s smooth bypass management extends component life in high-cycle production environments
• Agricultural operations — tractors, combines, barn equipment, and large facility washdowns on engine-driven rigs where the 24 mm solid keyed shaft SXMV3G40DVR3IDR configuration is compatible with the coupling systems in use
• Industrial facility maintenance — manufacturing plant surfaces, loading docks, and equipment yards requiring sustained maximum-pressure cleaning from the SXMV3G40DVR3IDR with external chemical delivery management
• Specialty drive system installations — applications where keyway coupling via the SXMV3G40DVR3IDR’s 24 mm solid shaft is the preferred or required drive interface for gear reducers, power take-off systems, or international engine platforms

5-Year US Warranty, Full Rebuildability, and Wholesale Pricing

Maximum-Pressure Performance Backed by Domestic Support

The SXMV3G40DVR3IDR 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 SXMV3G40DVR3IDR — solid ceramic plungers, brass manifold seals and o-rings, stainless valve seats and springs, Gymatic VR35 IDR unloader service parts, and crankcase bearings — is stocked domestically through AR’s authorized distribution channels.

With consistent maintenance — break-in oil change at 50 hours, scheduled oil changes every 500 hours or 3–5 months, regular valve and seal inspection at the elevated service frequency appropriate for 4,000 PSI continuous-duty cycles, and proper winterization using RV-grade environmentally safe antifreeze — the SXMV3G40DVR3IDR is engineered for 10 or more years of productive maximum-pressure commercial service life. AR North America’s domestic parts depth ensures rebuild kits, plunger sets, and Gymatic VR35 IDR unloader service components for the SXMV3G40DVR3IDR are typically available same-week.

Contractors, rental fleet operators, municipal purchasing departments, resellers, and volume buyers are invited to contact wholesale@wshpwr.com for wholesale and special pricing on the SXMV3G40DVR3IDR 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. 4,000 PSI. 3.0 GPM. 24mm Solid Shaft. IDR Precision Bypass.

Italian Engineering. Maximum Pressure. Controlled Bypass. US Warranty Coverage.

For contractors, industrial operators, and specialty drive system builders who need 4,000 PSI maximum pressure, the advanced bypass pressure management of the Integrated Dump Regulator, and the broader coupling flexibility of a 24 mm solid keyed shaft — in a 3.0 GPM configuration that reduces engine horsepower demand while retaining full maximum-pressure cleaning force — the SXMV3G40DVR3IDR delivers a factory-tested, fully documented, and completely rebuildable SXMV Series assembly from one of the global pressure pump industry’s most trusted manufacturers. Twelve thousand cleaning units. Solid keyed shaft. Gymatic VR35 IDR bypass. 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.