XMA4G20N Triplex Pump 24 mm Shaft | 4.0 GPM 2000 PSI

XMA4G20N Triplex Plunger Annovi Reverberi

Pump | 4.0 GPM 2000 PSI 24mm Shaft

The XMA4G20N from Annovi Reverberi is a slow-speed commercial
triplex plunger pump delivering 4.0 GPM at 2,000 PSI at a
controlled 1,750 RPM — engineered for fleet washing, facility
washdown, agricultural equipment cleaning, contractor mobile wash rigs, and
commercial property maintenance where higher flow volume for faster rinsing and
wider coverage is the priority without pushing pressure into the range that creates
surface risk on vehicles, coated equipment, and sensitive outdoor surfaces. The
XMA4G20N is built on a 24 mm solid keyed shaft
compatible with electric motor and belt-drive configurations, combining a brass
manifold, solid ceramic plungers, and stainless steel valves with the low-speed
1,750 RPM design that reduces internal heat, limits vibration, and extends seal
and bearing service life in continuous commercial
daily-use environments.

At 4.0 GPM, the XMA4G20N delivers noticeably faster rinsing and
wider spray coverage than 3.0 GPM alternatives at equivalent pressure — moving
loosened soils efficiently toward drains with fewer passes across large fleet
vehicles, agricultural equipment, and commercial facility surfaces. The 2,000 PSI
working pressure sits in the practical range for versatile day-to-day cleaning
that covers fleet washing, facility maintenance, and agricultural washdown without
the containment demands or surface risk of higher-pressure configurations. Every
XMA4G20N ships factory pre-filled with break-in oil, includes an
oil sight glass and vented dipstick, and is performance-verified for flow and
pressure before shipment — backed by a 5-year limited warranty.

XMA4G20N Key Specifications

Flow Rate, Pressure & Drive Configuration

• Model: Annovi Reverberi XMA4G20N
• Flow Rate: 4.0 GPM — high-volume output for
  faster rinsing, wider spray coverage, and efficient soil
  carry-off in fleet, agricultural, and
  facility cleaning applications
• Maximum Pressure: 2,000 PSI — versatile
  working pressure for fleet washing, facility washdown,
  and agricultural cleaning without surface risk on
  coated vehicles and painted equipment
• Operating Speed: 1,750 RPM — slow-speed
  design reduces heat buildup, vibration, and component
  wear for extended continuous-duty
  service life
• Shaft: 24 mm solid keyed shaft — compatible
  with electric motor and belt-drive system
  configurations
• Pump Type: Triplex plunger — three-cylinder
  balanced design for smooth, low-pulsation output at
  rated 2,000 PSI
• Manifold: Brass — corrosion-resistant
  construction for reliable service life in fleet,
  agricultural, and commercial
  cleaning environments
• Plungers: Solid ceramic — heat and abrasion
  resistant for extended seal life in continuous
  commercial duty cycles
• Valves: Stainless steel — consistent sealing
  performance across variable demand and
  cleaning conditions
• Oil Management: Oil sight glass and vented
  dipstick for fast daily crankcase level checks and
  pressure control
• Warranty: 5-year limited warranty

What’s Included with the XMA4G20N

Factory-Ready for Immediate Installation

• Factory pre-filled break-in oil — ready for
  immediate commissioning without sourcing initial
  oil fill separately
• Oil sight glass — quick visual crankcase oil
  level inspection before each operating session without
  tools or disassembly
• Vented dipstick — crankcase pressure balance
  and secondary oil level verification for complete
  daily maintenance checks
• Owner’s manual and parts schematic —
  installation reference, maintenance procedures, and
  parts identification for the life
  of the pump
• Factory performance verification — flow and
  pressure tested before every XMA4G20N shipment to
  confirm rated output specifications

How the XMA4G20N Produces Flow and Pressure

Triplex Plunger Design at 1,750 RPM for Commercial Daily-Use Reliability

The XMA4G20N uses a triplex plunger design where three solid
ceramic plungers operate in a synchronized reciprocating sequence — each cylinder
drawing water through stainless steel inlet valves and discharging at rated 2,000
PSI through stainless discharge valves in a balanced, overlapping three-cylinder
cycle. This configuration produces smooth, consistent output with substantially
reduced pulsation compared to axial cam or wobble-plate designs at equivalent
pressure and flow — reducing hose whip, lowering shock loads on downstream
unloaders and fittings, and delivering a more controlled, predictable lance feel
across commercial cleaning sessions.

At 1,750 RPM, the XMA4G20N’s ceramic plungers, valve seats, and
bearing surfaces all cycle at a controlled rate that maintains stable internal
temperatures and keeps mechanical stress below the fatigue threshold that higher-speed
pump designs accumulate in equivalent commercial use. For fleet operators,
agricultural facilities, and contractor crews running the XMA4G20N
through regular daily cleaning cycles, this translates into longer intervals between
seal replacements, more consistent 2,000 PSI output over time, and a pump that
delivers dependable performance across the full operating season without
the accelerated wear that high-speed alternatives accumulate.

The 24 mm solid keyed shaft provides the torsional rigidity
needed for secure torque transfer in both electric motor direct-coupled and
belt-drive configurations — supporting clean integration into commercial wash
station builds, trailer-mounted contractor rigs, and stationary agricultural
system installations without custom adapter hardware.

XMA4G20N Key Benefits

More Flow, Conservative Pressure, and Low-Speed Durability

• 4.0 GPM for faster rinsing and wider coverage:
  noticeably more carry-off volume than 3.0 GPM alternatives
  at equivalent pressure — fewer passes across large fleet
  vehicles, agricultural equipment, and commercial facility
  surfaces means faster job completion and
  better throughput per shift
• 2,000 PSI for versatile day-to-day use:
  effective mechanical cleaning on road film, agricultural
  residues, and general soils without the surface risk
  that higher-pressure systems create on painted vehicles,
  coated equipment, and sensitive
  outdoor surfaces
• 1,750 RPM low-speed design extends service life:
  cooler operation and lower vibration than high-RPM
  alternatives — every operating hour at 1,750 RPM reduces
  heat buildup and mechanical stress on seals, bearings,
  and valve seats versus faster-running
  pump designs at equivalent output
• Triplex low-pulsation output protects the system:
  smooth three-cylinder cycle reduces hose whip, lowers
  shock loads on unloaders and fittings, and extends the
  service life of every downstream component in the
  XMA4G20N cleaning system
• 24 mm solid keyed shaft for flexible integration:
  compatible with electric motor and belt-drive commercial
  system configurations — the standard shaft size for
  diverse commercial wash station and
  contractor rig builds
• Brass manifold, ceramic plungers, stainless valves:
  the core material standards of commercial triplex pump
  construction delivered in a compact, practical
  4.0 GPM platform for daily-use
  cleaning applications
• Oil sight glass and dipstick for fast daily checks:
  oil level verification before each use in seconds —
  the routine maintenance habit that has the greatest
  single impact on XMA4G20N bearing longevity
  in daily commercial use
• Factory-verified performance before shipment:
  flow and pressure confirmed to rated specifications —
  no output uncertainty for commercial system builders
  and replacement pump installers
• 5-year warranty — strong coverage for this class:
  most competing commercial triplex pumps in the 4.0 GPM
  class at this price point carry shorter warranty terms —
  the XMA4G20N’s 5-year coverage reflects confidence
  in the platform’s daily-use durability

XMA4G20N Typical Applications

Where 4.0 GPM at 2,000 PSI Delivers Practical Commercial Results

• Fleet washing: service trucks, buses, vans,
  and equipment trailers where the XMA4G20N’s 4.0 GPM output
  at 2,000 PSI delivers faster rinse cycles and better
  surface coverage than lower-flow alternatives without
  paint and coating surface risk
• Facility washdown: maintenance bays, light
  industrial cleaning, and shop floors where consistent
  2,000 PSI output across regular daily sessions demands
  the thermal stability and service life that the
  XMA4G20N’s 1,750 RPM design provides
• Agricultural equipment and facility cleaning:
  tractors, implements, barns, pens, and general washdown
  where 4.0 GPM at 2,000 PSI covers large agricultural
  surfaces efficiently across seasonal high-frequency
  cleaning cycles
• Contractor mobile wash rigs: trailer-mounted
  and portable contractor systems where the XMA4G20N’s
  24 mm shaft, low-speed design, and verified performance
  provide reliable daily output for property maintenance
  routes and commercial cleaning contracts
• Commercial property maintenance: driveways,
  siding, decks, and outdoor surfaces where 4.0 GPM flow
  at 2,000 PSI handles high-use residential and commercial
  property cleaning tasks efficiently with the right
  nozzle selection for each surface type
• Commercial wash station builds: the XMA4G20N’s
  24 mm keyed shaft and 1,750 RPM specification make it
  a practical foundation pump for electric motor and
  belt-drive wash station installations across
  fleet, agricultural, and
  industrial environments

XMA4G20N Installation & Maintenance

Best Practices for Long Service Life at 4.0 GPM and 2,000 PSI

• Confirm drive system delivers rated 1,750 RPM:
  verify that the electric motor or belt-drive configuration
  delivers the correct operating speed to the XMA4G20N
  24 mm shaft — overspeed accelerates wear; underspeed
  reduces pressure and cleaning performance
• Mount on a rigid, vibration-resistant base:
  stable structural mounting minimizes transmitted vibration
  into the manifold and crankcase — important for
  trailer and skid-mounted
  commercial installations
• Feed clean, filtered water: install an
  upstream strainer to protect ceramic plungers, stainless
  valves, and packing from particulate contamination —
  the most cost-effective protection for the XMA4G20N’s
  wet-end components
• Install a correctly rated unloader valve:
  size the unloader for 2,000 PSI and 4.0 GPM — an
  incorrectly adjusted unloader creates pressure spikes
  that stress pump packings and reduce
  component service life
• Check oil before every shift: use the sight
  glass for visual confirmation and dipstick for secondary
  verification — adequate crankcase oil is the foundation
  of XMA4G20N bearing longevity in
  daily commercial use
• Never run dry: always confirm water supply
  is flowing before starting — even brief dry operation
  damages ceramic plunger packings and voids
  warranty coverage
• First oil change at approximately 50 hours:
  then follow Annovi Reverberi’s duty-cycle-based
  maintenance schedule — daily commercial fleet and
  agricultural use benefits from more frequent
  oil service than intermittent
  residential use
• Flush after detergents and chemicals: run
  clean water through the XMA4G20N after every chemical
  application to protect manifold passages and
  stainless valve seats from
  residue buildup
• Winterize before cold storage: drain
  completely or use pump-safe antifreeze — freeze damage
  to the manifold or plunger bores voids
  warranty coverage

Why Choose the Annovi Reverberi XMA4G20N

More Flow Than the XMA3G25N, Conservative Pressure, Low-Speed Durability

• 4.0 GPM where 3.0 GPM leaves work undone:
  the XMA4G20N is the right step up when rinsing speed,
  surface coverage, and carry-off volume matter more than
  additional cutting pressure — more productive per shift
  on fleet, agricultural, and
  facility cleaning tasks
• 2,000 PSI — the practical working range for
  versatile cleaning: effective on road film,
  agricultural residues, and general soils across the
  widest range of commercial surfaces without requiring
  specialized containment or
  surface handling procedures
• 1,750 RPM is the commercial durability
  specification: not a high-speed pump with a
  commercial label — the XMA4G20N is a low-speed triplex
  platform engineered for daily commercial use across
  seasons where seal and bearing longevity
  are operational priorities
• Triplex pulsation advantage for daily users:
  smoother output means less hose whip, less unloader
  shock, and less downstream component fatigue —
  operators notice the difference across a full
  commercial operating shift
• Annovi Reverberi quality since 1958: over
  60 years of commercial pump engineering manufacturing
  expertise — the XMA4G20N carries that heritage into
  a practical high-flow platform built to AR’s
  commercial specifications for daily-use
  cleaning systems
• 5-year warranty for long-term confidence:
  strong coverage for the 4.0 GPM commercial class —
  backed by nationwide service support and the global
  Annovi Reverberi parts network
• Backed by WSHPWR: application support, drive
  system sizing guidance, and full parts availability
  for the XMA4G20N and the complete Annovi
  Reverberi XMA pump family

The Annovi Reverberi XMA4G20N delivers 4.0 GPM at
2,000 PSI at a low-speed 1,750 RPM through a
24 mm solid keyed shaft compatible with electric motor and
belt-drive configurations — a commercial triplex pump engineered for fleet
washing, agricultural equipment cleaning, facility washdown, and contractor mobile
rigs where higher 4.0 GPM flow volume, surface-safe 2,000 PSI working pressure,
low-speed durability, and 5-year warranty coverage are all required for dependable
daily commercial performance. Contact WSHPWR for current pricing, availability,
drive system compatibility, and application support.