RMW25G28-EZ 2.5 GPM 2800 PSI | 7/8 Shaft EZ Pump

Overview

• The Annovi Reverberi RMW25G28-EZ Vertical Pump is engineered as a
  powerful, efficient, and reliable replacement pump for residential and light
  commercial pressure washers.
• Delivers 2.5 GPM at 2,800 PSI while operating at
  3,400 RPM, providing strong, consistent cleaning power for a wide
  range of tasks.
• Features the EZ Start system, integrated unloader, and detergent
  injection capability for smooth startups, controlled pressure, and hassle-free
  operation.
• Mounts directly to gas engines with a 7/8″ vertical shaft;
  compact, user-friendly, and ready for immediate use.
• Maintenance-free crankcase is factory-filled with premium synthetic oil, and
  durable ceramic plungers, stainless steel valves, and heavy-duty seals are
  designed for long service life in demanding environments.

Key Specifications of RMW25G28-EZ

• Flow Rate: 2.5 GPM
• Maximum Pressure: 2,800 PSI
• Operating Speed: 3,400 RPM
• Pump Type: Axial cam, direct-drive vertical pump
• Shaft Size: 7/8″ vertical shaft for gas engines
• EZ Start System: Reduces engine load during startup by
  eliminating static back pressure
• Integrated Unloader: Manual pressure adjustment knob for
  precise output control
• Built-in Chemical Injector: Enables detergent application for
  enhanced cleaning
• Crankcase: Maintenance-free, pre-filled with premium synthetic oil

What’s Included

• RMW25G28-EZ vertical axial cam pump, factory-tested and installation-ready
• Pre-filled crankcase with premium synthetic oil
• EZ Start system for easier, smoother engine startups
• Integrated unloader with manual pressure adjustment knob
• Built-in chemical soap injection system
• Instruction manual and detailed schematic with parts breakdown
  (mounting bolts not included)

How the Pump Works

• Direct-drive axial cam design efficiently converts engine rotation into
  pressurized water flow for strong, consistent output.
• EZ Start system reduces pull-cord resistance by eliminating static
  back pressure, preventing engine strain and simplifying startups.
• When the spray trigger is released, the integrated unloader valve diverts water
  into bypass to prevent pressure buildup and protect the system.
• The manual adjustment knob allows operators to fine-tune outlet pressure for
  precise cleaning intensity.
• The chemical injector automatically draws detergent into the water stream for
  tougher jobs, boosting cleaning effectiveness without extra equipment.
• Maintenance-free crankcase, ceramic plungers, stainless steel valves, and
  reinforced seals work together to deliver smooth, long-lasting performance with
  minimal upkeep.

Benefits of RMW25G28-EZ

• Consistent Cleaning Power: 2.5 GPM at 2,800 PSI handles multiple
  surfaces with strong, reliable performance.
• EZ Start System: Reduces engine strain, extends engine life, and
  makes startups easier.
• Low Maintenance: Factory pre-filled synthetic oil eliminates
  lubrication service.
• Durable Build: Ceramic plungers and stainless steel valves resist
  wear and corrosion for long service life.
• Integrated Soap Injector: Enables fast, convenient detergent
  cleaning without extra accessories.
• User Ready: Ships pre-tested and ready for direct installation to
  minimize downtime.

Typical Applications

• Driveway & Patio Cleaning: Remove dirt, grime, oil stains, and buildup from concrete and stone.
• Deck & Fence Restoration: Wash away weathering, algae, and mildew from wood and composite surfaces.
• Siding Cleaning: Maintain home exteriors with controlled, effective pressure.
• Fleet Vehicle Washing: Clean cars, motorcycles, small trucks, RVs, and trailers.
• Outdoor Equipment Maintenance: Rinse mowers, tractors, and tools to remove grease and debris.

 Summary

• The Annovi Reverberi RMW25G28-EZ Vertical Pump is a
  2.5 GPM, 2,800 PSI, 3,400 RPM direct-drive axial cam pump for gas
  engines with a 7/8″ vertical shaft, featuring
  EZ Start technology, integrated unloader, chemical soap injector,
  and a maintenance-free crankcase pre-filled with synthetic oil—delivering
  durable, low-maintenance, high-performance cleaning power for residential and
  light commercial pressure washers.