SXMV4G40DF40VR35 4.0 GPM 4000 PSI Pump | 3400 RPM F40VR35

SXMV4G40DF40VR35 by Annovi Reverberi — Triplex Plunger Pump with Gymatic VR35 Unloader | 4.0 GPM | 4,000 PSI | 1″ Hollow Keyway Shaft | SAE J609A Gas and Diesel Engine Drive | No Chemical Injector

The SXMV4G40DF40VR35 by Annovi Reverberi is a heavy-duty SXMV Series triplex ceramic plunger pump engineered for gas and diesel engine-driven industrial and commercial pressure washing systems operating at maximum commercial pressure — delivering 4.0 GPM and 4,000 PSI at 3,400 RPM with dependable Gymatic VR35 bypass pressure control and straight high-pressure water output, without an integrated downstream chemical injector or Integrated Dump Regulator. Rated at 16,000 cleaning units — the highest output in the AR commercial pump lineup — the SXMV4G40DF40VR35 is built around a 1″ hollow keyway crankshaft and F40 SAE J609A direct-drive flange, close-coupling directly to gasoline or diesel engines with a 1″ cylindrical shaft for maximum-pressure contractor and industrial applications.

The SXMV4G40DF40VR35 is the clean-water, straight-pressure configuration of the SXMV 4,000 PSI platform — the correct specification for operators managing chemical delivery through a dedicated external downstream injector, soft wash system, or not at all, and for system builders who prefer the standard VR35 bypass circuit without the additional IDR pressure dump management component. The VR35 unloader on the SXMV4G40DF40VR35 is rated to 4,000 PSI and 5 GPM — matched precisely to the pump’s maximum operating point with no upside variance required, providing the most direct pressure regulation available at this duty point.

Built by Annovi Reverberi in Modena, Italy — with US-based operations, a domestic parts distribution network, and dedicated AR North America technical support — the SXMV4G40DF40VR35 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 SXMV4G40DF40VR35 is a long-term investment in the highest-output commercial pump platform AR produces.

Decoding the SXMV4G40DF40VR35 Model Number

What Every Segment of This AR Pump Designation Tells You

The SXMV4G40DF40VR35 model number directly encodes the pump series, output, shaft, flange, and unloader specification in a single designation. Reading each segment before specifying or installing confirms the full configuration of this 4,000 PSI platform:

• S — Series prefix: SXMV high-pressure series — AR’s elevated-duty XM platform variant engineered specifically for 4,000 PSI continuous commercial operation
• XMV — Pump family: XM Series triplex plunger pump with forged brass manifold construction
• 4G40 — Performance rating: 4.0 GPM flow rate at 4,000 PSI maximum operating pressure
• D — Shaft version: Direct Gas/Diesel Drive — 1″ hollow keyway crankshaft bore for direct coupling to gasoline or diesel engine 1″ output shafts
• F40 — Flange type: SAE J609A direct-drive flange for SXMV/RSV Series ‘D’ version pumps — close coupling to gas or diesel engines with a 1″ I.D. cylindrical shaft (AR part AR2760290). Compatible with both gasoline engines and standard diesel engines equipped with a 1″ crankshaft and SAE J609A bolt pattern.
• VR35 — Unloader system: Gymatic VR35 — AR’s elevated-capacity Gymatic unloader family rated to 4,000 PSI and 5 GPM, matched directly to the SXMV4G40DF40VR35’s maximum operating pressure point without requiring upside variance
• No trailing I or IDR suffix — the model terminates at VR35, confirming this pump delivers straight high-pressure water output. No downstream chemical injector and no Integrated Dump Regulator on the SXMV4G40DF40VR35. Operators requiring integrated chemical feed should select the SXMV4G40DVR3IDR variant.

SXMV4G40DF40VR35 vs SXMV4G40DVR3IDR — Understanding the 4,000 PSI Platform Variants

Both pumps share the same SXMV Series platform, F40 flange, 1″ keyway shaft, and 4.0 GPM / 4,000 PSI output. The differences are unloader configuration and chemical feed:

• SXMV4G40DF40VR35 (this model) — Gymatic VR35 unloader, standard bypass operation, no chemical injector, no IDR. Correct for maximum-pressure applications managing chemical delivery externally, or operating on straight 4,000 PSI water pressure. The cleanest, most direct 4,000 PSI pump configuration in the SXMV family.
• SXMV4G40DVR3IDR — Gymatic VR35 unloader with Integrated Dump Regulator (IDR) and active downstream chemical injector. Correct for high-cycle production environments where managed bypass pressure dump reduces component stress at 4,000 PSI, and integrated two-mode chemical capability is required.

For operators who manage chemical delivery independently and prefer standard VR35 bypass operation without the IDR component, the SXMV4G40DF40VR35 is the correct specification.

Key Specifications

SXMV4G40DF40VR35 Technical Details at a Glance

• Flow Rate: 4.0 GPM (gallons per minute)
• Maximum Pressure: 4,000 PSI
• Cleaning Units: 16,000 (GPM × PSI) — highest output in the AR XM Series commercial lineup
• Operating Speed: 3,400 RPM
• Pump Type: Triplex ceramic plunger pump — three-piston crankshaft-driven design for smooth, consistent maximum-pressure output
• Crankshaft Bore: 1″ hollow keyway — direct engagement with gas or diesel engine 1″ output shaft
• 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
• Flange: F40 — SAE J609A direct-drive flange for SXMV/RSV Series ‘D’ version, 1″ shaft, gas and diesel engine compatible (AR part AR2760290)
• Unloader System: Gymatic VR35 — brass-body internal bypass unloader, adjustable pressure regulation, rated to 4,000 PSI and 5 GPM
• Chemical Injector: Not included — model terminates at VR35 with no injector suffix
• IDR: Not included — standard VR35 bypass operation without Integrated Dump Regulator
• 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 SXMV4G40DF40VR35 Assembly Ready for Installation

Every SXMV4G40DF40VR35 ships fully assembled and field-ready:

• Factory-installed Gymatic VR35 unloader — pre-mounted for internal bypass pressure regulation at 4,000 PSI; no downstream injector port and no IDR on this SXMV4G40DF40VR35 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 pre-selected and sized for F40 SAE J609A direct-drive flange installation on compatible gas or diesel engines
• Operator’s manual — complete installation, startup, operating, and maintenance procedures for the SXMV4G40DF40VR35 including oil change intervals, winterization protocol, and inlet plumbing guidance
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable SXMV4G40DF40VR35 component for field and shop reference
• Factory test certification — every SXMV4G40DF40VR35 load-tested at 50%, 100%, and 150% of rated output before leaving the AR manufacturing facility

The Gymatic VR35 Unloader at 4,000 PSI

Rated Precisely at Operating Pressure. Stable. Tamper-Resistant. Maximum Pressure Ready.

The Gymatic VR35 unloader on the SXMV4G40DF40VR35 is rated to exactly 4,000 PSI and 5 GPM — matched directly to the pump’s maximum operating point. Unlike lower-pressure pump configurations where the unloader operates with upside variance headroom, the VR35 on the SXMV4G40DF40VR35 is specified at its precise rated ceiling for this application:

• Direct pressure-matched unloader — the VR35’s 4,000 PSI rating aligns with the SXMV4G40DF40VR35’s maximum output, providing the most direct, tightly matched pressure regulation available in the AR unloader lineup at this duty point
• Adjustable then tamper-resistant — operating pressure set on-site and locked before production operation, held consistently across every operator and every work cycle on the SXMV4G40DF40VR35
• Standard internal bypass operation — trigger-off bypass redirects flow through the VR35 bypass circuit without the IDR’s managed dump component. The standard VR35 bypass on the SXMV4G40DF40VR35 is appropriate for applications where the bypass transition smoothness provided by IDR is not a priority specification
• No downstream injector port — the SXMV4G40DF40VR35 delivers straight 4,000 PSI / 4.0 GPM water output. Chemical delivery is managed externally through a dedicated downstream injector, soft wash proportioner, or separate chemical application system
• Engine load reduction in bypass — reduced back-pressure in bypass mode lowers engine load and fuel consumption during idle intervals on full-day maximum-pressure wash operations
• Brass body construction — resists corrosion from cleaning chemicals, chlorinated water, and sustained heavy-duty field exposure at 4,000 PSI operating conditions

Why the SXMV4G40DF40VR35 — No Injector, No IDR — Is the Right Specification for Some Applications

Clean Water Output at Maximum Pressure. External Chemical Control. Standard Bypass.

The SXMV4G40DF40VR35 without an integrated injector or IDR is the preferred specification for a well-defined set of maximum-pressure professional applications:

• Dedicated external downstream injectors at 4,000 PSI — operators running independently adjustable-ratio downstream injectors on maximum-pressure systems gain chemical concentration flexibility that a fixed venturi injector built into the unloader cannot provide. At 4,000 PSI, precise chemical management is a production efficiency requirement, and external injection systems designed for this pressure range deliver that control without compromise on the SXMV4G40DF40VR35 platform.
• Soft wash and proportioner systems — soft wash operations managing chemical delivery through dedicated proportioning pumps or batch tanks keep the SXMV4G40DF40VR35 as a clean 4,000 PSI water supply source, maintaining independent chemical control at any dilution ratio without interference from a fixed venturi injector.
• Industrial applications requiring chemical system separation — some industrial and food processing environments specify that chemical dosing be separately valved, metered, and controlled from the pressure water source for regulatory, safety, or process engineering reasons. The SXMV4G40DF40VR35 serves as the clean pressure source in these architectures.
• Standard bypass preference — operators and system builders who prefer standard VR35 internal bypass operation without the additional IDR pressure management component can specify the SXMV4G40DF40VR35 with confidence that the VR35 unloader handles bypass transitions reliably at 4,000 PSI in standard commercial production environments.
• Multi-pump industrial systems — OEM integrators building systems with multiple SXMV4G40DF40VR35 pump heads or shared chemical infrastructure standardize injection at the system level rather than managing individual injectors at each pump head.

SXMV Series Construction — Every SXMV4G40DF40VR35 Component Built for 4,000 PSI Maximum Duty

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

At 4,000 PSI the engineering requirements at every wear surface in the SXMV4G40DF40VR35 exceed those of any lower-pressure pump in the AR commercial range. Every material specification in the SXMV4G40DF40VR35 reflects those elevated requirements:

• Solid ceramic plungers in the SXMV4G40DF40VR35 resist the substantially elevated seal contact forces and higher-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 SXMV4G40DF40VR35 pump replacement required.
• Forged brass manifold on the SXMV4G40DF40VR35 provides a dense, pore-free pressure vessel engineered for the cyclic structural stress of 4,000 PSI continuous commercial duty — the highest sustained pressure in the AR commercial pump range. 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 SXMV4G40DF40VR35 must resist substantially higher seating forces, faster flow velocities, and greater scale accumulation rates at 4,000 PSI than at lower operating pressures. Stainless valve geometry is specified for the fatigue and scale resistance required at maximum commercial pressure.
• Triplex three-plunger design produces overlapping pressure pulses that reduce pulsation-induced fatigue stress on hoses, spray guns, surface cleaners, and fittings connected to the SXMV4G40DF40VR35 — at 4,000 PSI and 4.0 GPM, pulsation loads on downstream components are at their maximum in the AR commercial lineup.

F40 SAE J609A — Direct Drive for Gas and Diesel Engines at the 4,000 PSI Duty Point

One Flange Standard. Gasoline or Diesel. Engine Sizing Critical at 4,000 PSI.

• Gasoline engine compatibility — direct bolt-up to commercial gas engines with a 1″ cylindrical output shaft and SAE J609A bolt pattern in the high-horsepower class required for 4.0 GPM / 4,000 PSI loads on the SXMV4G40DF40VR35. Verify engine horsepower rating against the pump’s duty point before installation.
• Diesel engine compatibility — the F40 SAE J609A standard is equally compatible with standard diesel engines equipped with a 1″ crankshaft, making the SXMV4G40DF40VR35 the natural specification for diesel-powered heavy contractor rigs and industrial equipment where high-horsepower diesel engines are the operational standard for 4,000 PSI applications
• Direct close-coupling — the SXMV4G40DF40VR35 mounts face-to-face against the engine with the 1″ hollow keyway crankshaft bore engaging the engine shaft directly, eliminating belt guards, pulleys, and tensioning hardware
• F40 part reference — AR part AR2760290. Verify this part number when sourcing replacement flanges or hardware for the SXMV4G40DF40VR35 to ensure correct fitment.
• Included mounting hardware — bolts and fasteners sized for the F40 SAE J609A bolt pattern are supplied in the box with the SXMV4G40DF40VR35

Typical Applications

Where the SXMV4G40DF40VR35 Delivers Best Results

• Industrial concrete and surface restoration — parking structures, loading docks, industrial floors, and exterior concrete surfaces where the SXMV4G40DF40VR35’s 16,000 CU output achieves production cleaning results efficiently with chemical applied through an external system
• Heavy industrial equipment cleaning — excavators, crushers, mining equipment, and large plant machinery where 4,000 PSI penetrates maximum-contamination surfaces and chemical delivery is managed independently of the SXMV4G40DF40VR35 pump
• High-volume fleet and vehicle washing — truck terminals, container depots, and large fleet yards where the SXMV4G40DF40VR35’s 16,000 CU output dramatically reduces wash time per vehicle with chemical applied through a dedicated external downstream injector or pre-soak system
• Soft wash operations requiring maximum-pressure rinse — operations where the SXMV4G40DF40VR35 provides clean 4,000 PSI rinse water after chemical application managed by a dedicated soft wash proportioner or batch chemical system
• Municipal and government heavy equipment services — public works heavy equipment, bridge maintenance, and large-scale infrastructure cleaning where diesel engine compatibility and maximum output from the SXMV4G40DF40VR35 are both operational requirements
• Agricultural large-scale washdowns — large equipment, feedlot facilities, and barn structures where the SXMV4G40DF40VR35’s maximum output and external chemical delivery flexibility handle the contamination levels and surface areas involved
• OEM industrial system integrators — equipment builders specifying pump and chemical delivery components independently for maximum system design control and chemical management precision at 4,000 PSI

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

Maximum-Output Performance Backed by Domestic Support

The SXMV4G40DF40VR35 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 SXMV4G40DF40VR35 — solid ceramic plungers, brass manifold seals and o-rings, stainless valve seats and springs, Gymatic VR35 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 SXMV4G40DF40VR35 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 unloader service components for the SXMV4G40DF40VR35 are typically available same-week, keeping maximum-output contractor rigs and industrial wash operations running.

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 SXMV4G40DF40VR35 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.

16,000 Cleaning Units. 4,000 PSI. 4.0 GPM. Clean Water. External Chemical Control.

Italian Engineering. VR35 Maximum-Pressure Bypass. US Warranty Coverage.

For contractors, industrial operators, fleet managers, and system integrators who need the highest cleaning productivity in the AR commercial lineup — 4.0 GPM and 4,000 PSI through a direct-matched Gymatic VR35 unloader, on a gas or diesel engine direct-drive platform built for maximum-pressure continuous duty — with chemical delivery managed independently of the pump, the SXMV4G40DF40VR35 delivers a factory-tested, fully documented, and completely rebuildable SXMV Series assembly from one of the global pressure pump industry’s most trusted manufacturers. Sixteen thousand cleaning units. Direct drive. One-inch keyway shaft. VR35 bypass. No fixed injector. 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.