XMV3G27D-F25M Pump Unloader Kit | 3.0 GPM 2700 PSI

Annovi Reverberi XMV3G27D-F25M Triplex Plunger Pump with Minimatic Unloader — 3.0 GPM | 2,700 PSI | Direct Drive

The Annovi Reverberi XMV3G27D-F25M is a commercial-grade triplex ceramic plunger pump engineered for professionals who demand consistent pressure output, long service intervals, and a pump that can be fully rebuilt rather than replaced. Producing 3.0 GPM at 2,700 PSI at 3,400 RPM, this direct-drive pump is purpose-built for gasoline and diesel engine systems and arrives complete, pre-oiled, and ready to work from the moment it leaves the box.

Manufactured by Annovi Reverberi — a globally recognized Italian pump brand headquartered in Modena, Italy with dedicated US operations, parts distribution, and support — the XMV3G27D-F25M is more than a pump purchase. It is a long-term investment in a fully rebuildable platform backed by a 5-year US warranty, domestic parts availability, and engineering heritage spanning decades of industrial pressure pump development.

Understanding the XMV3G27D-F25M Model Number

How to Read This AR Pump Designation

Every Annovi Reverberi pump model number encodes the key specifications you need to know before installation. Here is what each segment of XMV3G27D-F25M means:

• XMV — Pump series: XM Series triplex plunger pump with a forged brass manifold head
• 3G27 — Performance rating: 3.0 GPM flow rate at 2,700 PSI maximum operating pressure
• D — Shaft version: Direct Gas Drive configuration, compatible with 3/4″ or 7/8″ hollow shaft gas or diesel engines
• F25 — Flange type: XM Series ‘D’ version flange for close coupling to gas/diesel engines with a 3/4″ cylindrical shaft and SAE J609A flange interface (AR part AR1780580)
• M — Unloader code: Minimatic (Mini-Matic 4/B) internal bypass unloader system — no chemical or soap injector port

The absence of an “I” at the end of the model number confirms this unit does not include a downstream chemical injector. This pump is configured purely for high-pressure water delivery, making it the correct choice for operators who apply detergent via a dedicated downstream injector, soft wash system, or not at all.

Key Specifications

Technical Details at a Glance

• Flow Rate: 3.0 GPM (gallons per minute)
• Maximum Pressure: 2,700 PSI
• Operating Speed: 3,400 RPM
• Pump Type: Triplex ceramic plunger pump — three-piston design for smooth, even flow
• Manifold Material: Forged brass for superior corrosion resistance and heat dissipation
• Plungers: Solid ceramic — high hardness, chemical resistance, and wear life far exceeding stainless alternatives
• Valves: Stainless steel for reliable sealing and resistance to scale and chemical attack
• Shaft Interface: Direct Gas Drive (D) — 3/4″ or 7/8″ hollow shaft connection
• Flange: F25 — SAE J609A compliant flange for XM Series ‘D’ version, close-coupling to gas/diesel engines
• Unloader System: Mini-Matic 4/B internal bypass unloader (Minimatic / M-code), brass body
• Chemical Injector: Not included (no “I” suffix)
• Warranty: 5-year limited warranty — US-based coverage with domestic parts and service support

What’s Included in the Box

Factory-Supplied Components for Immediate Installation

Annovi Reverberi ships the XMV3G27D-F25M as a complete, field-ready assembly. There is no need to source additional hardware or fluids before your first run. Every unit includes:

• Factory-installed Mini-Matic (M) internal bypass unloader — pre-set for smooth pressure regulation and pump protection during no-flow conditions
• AR factory break-in oil — crankcase pre-filled and ready for initial operation
• Vented dipstick — allows fast, accurate oil level checks without tools
• Clear oil sight glass — monitor crankcase oil level at a glance during operation
• Mounting bolts and fasteners — hardware sized and matched for direct-drive engine installation using the F25 SAE J609A flange
• Operator’s manual — complete setup, operating, and maintenance instructions
• Parts schematic — exploded-view diagram with AR part numbers for every serviceable component
• Factory test certification — every pump is load-tested at 50%, 100%, and 150% of rated output before leaving the facility

The Mini-Matic Unloader System Explained

Internal Bypass Pressure Regulation — No Soap Injector

The Mini-Matic (M) unloader is an internal bypass design from Annovi Reverberi’s Mini-Matic 4/B family, built specifically for XM, RC, and XT series pumps operating up to 2,600 PSI and flow rates in the 2–5 GPM range. On this model, the brass-body unloader provides:

• Internal bypass operation — when the spray gun trigger is released, water is redirected through the bypass circuit rather than building destructive deadhead pressure in the manifold
• Pump protection — prevents pressure spikes that accelerate seal and valve wear during trigger-off intervals
• Adjustable pressure regulation — allows on-site tuning of working pressure to match the application
• No downstream injector port — this is a pressure-only configuration; chemical feed must be handled externally if required

For operators who require integrated chemical injection, the XMV3G27D-F25MI variant includes the same Mini-Matic unloader with an added fixed-rate downstream soap injector port (the “I” suffix). If your operation relies on downstream detergent application, ensure you select the correct variant before ordering.

Why Ceramic Plungers and a Brass Manifold Matter

Material Science Behind the Long Service Life

The construction choices inside the XMV3G27D-F25M are not marketing language — they are the reason this pump can last a decade of commercial use when properly maintained:

• Solid ceramic plungers offer hardness ratings far beyond stainless steel, resist chemical attack from detergents and hard water minerals, and maintain dimensional precision through hundreds of hours of operation. When they do eventually show wear, they are individually replaceable.
• Forged brass manifold eliminates the micro-porosity risk of cast aluminum and provides superior resistance to the corrosive effects of chlorinated water, acidic cleaning agents, and high-cycle thermal stress.
• Stainless steel valves seat and seal reliably across thousands of pressure cycles, resisting the pitting and scale buildup that causes premature valve failure in lesser materials.
• Triplex design means three plungers operating in sequence, producing smooth, overlapping pressure pulses that reduce vibration stress on downstream fittings, hoses, and spray guns compared to single or duplex configurations.

Applications and Recommended Use

Commercial and Industrial Pressure Washing

The XMV3G27D-F25M is built for daily production use across a wide range of professional environments:

• Pressure washing contractors — residential and commercial exterior cleaning, concrete and surface restoration
• Fleet and vehicle washing — trucks, trailers, vans, and service vehicles requiring frequent high-pressure washing
• Heavy equipment and construction — excavators, loaders, skid steers, and job site equipment washdown
• Agricultural operations — barn and facility cleaning, livestock equipment washdown, implement maintenance
• Municipal and government services — maintenance rigs, public infrastructure cleaning, utility fleet washing
• Industrial facilities — manufacturing plant washdowns, conveyor cleaning, surface prep before coating or inspection

5-Year US Warranty and Full Rebuildability

A Pump Built to Last — Backed by Real Support

What separates the Annovi Reverberi XMV3G27D-F25M from lower-cost alternatives is not just build quality — it is the support infrastructure behind it. AR North America maintains US-based warranty service, a complete domestic parts inventory, and an authorized service network capable of supporting every component in this pump.

The XMV3G27D-F25M is covered by a 5-year limited warranty from the date of purchase. More importantly, every part of this pump — from the ceramic plungers and valve seats to the crankcase seals and manifold O-rings — is available as a service part. A trained technician can disassemble, inspect, reseal, and return this pump to like-new performance without replacing the entire unit. In a professional operation, that repairability is worth more than any warranty claim process.

For operators committed to long-term cost of ownership, the ability to rebuild rather than replace means a single XMV3G27D-F25M can realistically deliver 10 or more years of service with proper maintenance: oil changes every 3–5 months or 500 operating hours, regular valve inspection, and seasonal winterization using RV-grade antifreeze.

Direct Drive Installation — F25 SAE J609A Flange

Bolt-On Compatibility with Gas and Diesel Engines

The F25 flange on this pump is designed for XM Series ‘D’ version pumps and provides a close-coupled, direct-drive interface for gas or diesel engines with a 3/4″ cylindrical shaft and SAE J609A bolt pattern. This eliminates the need for belt drives, jackshafts, or coupling adapters in standard direct-drive frame configurations. The included mounting bolts and fasteners are sized and supplied to match this flange, so installation requires only basic hand tools and correct engine alignment.

The Annovi Reverberi Advantage

Italian Engineering. US Warranty. Decade-Long Service Life.

Annovi Reverberi has been manufacturing precision triplex plunger pumps in Modena, Italy for decades, supplying OEM and aftermarket pump solutions to pressure washing equipment manufacturers worldwide. The XMV series represents the company’s core commercial offering — a platform refined over years of field use across every climate, water quality condition, and application type imaginable.

When you purchase the XMV3G27D-F25M, you receive a pump that has been factory-tested at load, pre-filled with oil, packed with all installation hardware, and covered by a genuine US-backed warranty. AR North America’s parts distribution ensures that a rebuild kit, replacement plunger, or new valve seat is available domestically — often same-week — so your equipment stays productive rather than waiting weeks for international shipping.

For contractors, fleet operators, and facility managers who need a pump that earns its keep every day and can be serviced in the field for years to come, the Annovi Reverberi XMV3G27D-F25M is the standard against which other pumps are measured.