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Product / / 85.129.037B

AR RSV4G40HD-F40EZ Pump – 4.2 GPM, 4,400 PSI, 1" Shaft

AR RSV4G40HD-F40EZ Pump – 4.2 GPM, 4,400 PSI, 1" Shaft

Specifications

UNLOADER

Built-In

WARRANTY

2 Years

RPM

3,450

PUMP MODEL

AR RSV4G40HD-F40EZ

PUMP TYPE

Triplex

Oil Type

30W Non Detergent

Oil Capacity

16 oz

Thermal Relief Value

85.300.022

Max Inlet Temperature

60°C / 140°F

Manifold Type

Brass

Soap Injector

Fixed

Discharge Size

3/8" Brass QC 85.300.103

Inlet Size

3/4" GHF

Plunger Piston

Ceramic

Unloader Type

Built-In

Max GPM

4.2

Shaft Size

1"

Weight

14 lbs

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PRODUCT

DESCRIPTION

Heavy-Duty Triplex Pump for Maximum Cleaning Power

The AR RSV4G40HD-F40EZ Pump Assembly (Bare Pump Part #85.120.037) is a professional-grade triplex direct-drive gas pump engineered for contractors, commercial operators, and power users who demand unmatched cleaning performance. Delivering up to 4,400 PSI at 4.2 GPM, this pump provides the high pressure and flow rate required for the toughest jobs, from industrial cleaning to large-scale property maintenance.

Manufactured by Annovi Reverberi (AR), a global leader in pump technology, the RSV4G40HD-F40EZ combines a brass manifold, ceramic plungers, and a built-in unloader in a rugged, durable design. Backed by a 2-year warranty, this pump is built to handle extreme cleaning challenges with confidence.

Key Features

  • Bare Pump Part #: 85.120.037

  • Pump Manufacturer: Annovi Reverberi (AR)

  • Pump Model: RSV4G40HD-F40EZ

  • Pump Style: Triplex, direct-drive gas

  • Max PSI: 4,400

  • Max GPM: 4.2

  • Shaft Size: 1" horizontal shaft

  • Unloader Type: Built-in

  • Plunger (Piston): Ceramic for superior wear resistance

  • Inlet Size: 3/4" GHF (garden hose fitting)

  • Discharge Size: 3/8" Brass QC (85.300.103)

  • Soap Injector: Fixed, integrated injector

  • Manifold Type: Brass for strength and durability

  • RPM: 3,450

  • Max Inlet Temp: 60°C / 140°F

  • Thermal Relief Valve: 85.300.022 included

  • Oil Capacity: 16 oz

  • Oil Type: 30W non-detergent oil

  • Weight: 14 lbs

  • Warranty: 2 Years

Built for Professional Power

The RSV4G40HD-F40EZ is engineered with a triplex plunger design, the professional standard for heavy-duty pumps. Triplex pumps use three plungers to deliver smoother operation, reduced vibration, and longer life compared to axial designs.

With 4,400 PSI of maximum pressure and a flow rate of 4.2 GPM, this pump delivers serious cleaning power. The high PSI rating blasts through stubborn dirt, oil, and paint, while the high flow rate ensures faster coverage on large surfaces. This combination makes the RSV4G40HD-F40EZ an excellent choice for industrial cleaning, construction, fleet maintenance, and large property jobs.

Rugged Construction

This pump is built with professional-grade materials:

  • Ceramic plungers resist wear and heat, ensuring long service life even under heavy use.

  • Brass manifold improves durability and corrosion resistance, while also enhancing heat dissipation for pump longevity.

  • 1" horizontal shaft offers compatibility with a wide range of gas engines used in commercial-grade pressure washers.

At 14 lbs, this pump combines rugged strength with a manageable weight for installation and maintenance.

Integrated Features for Convenience

The RSV4G40HD-F40EZ comes equipped with features that simplify use and protect the pump:

  • Built-in unloader automatically regulates pressure and provides system protection.

  • Fixed soap injector allows detergent application when using a low-pressure nozzle, making chemical cleaning simple and effective.

  • Brass quick-connect discharge (3/8”) provides a secure and leak-free hose connection.

  • Thermal relief valve (85.300.022) prevents overheating during extended bypass by automatically purging hot water and replacing it with cooler water.

Easy Maintenance

Like all AR pumps, the RSV4G40HD-F40EZ is designed for straightforward maintenance. With a 16 oz oil capacity, the pump uses 30W non-detergent oil for lubrication. Regular oil checks and scheduled oil changes are simple tasks that keep the pump running at peak performance.

The pump is designed to handle water inlet temperatures up to 140°F (60°C), providing greater flexibility for varied operating environments compared to residential-grade alternatives.

Common Applications

The AR RSV4G40HD-F40EZ Pump Assembly is built for demanding cleaning tasks where both pressure and water flow are critical. Applications include:

  • Construction and Industrial Sites – Remove caked-on mud, grease, and debris from equipment.

  • Fleet Maintenance – Clean trucks, trailers, buses, and heavy-duty vehicles efficiently.

  • Agriculture – Wash tractors, sprayers, and other farm machinery.

  • Property Management – Maintain large commercial and residential properties with high efficiency.

  • Surface Prep and Restoration – Strip paint, mold, and grime from siding, decks, and concrete.

This pump’s high-pressure rating and generous flow rate make it a professional solution for contractors and serious users who need reliable, long-term performance.

Product Specifications

  • Part #: 85.120.037

  • Manufacturer: Annovi Reverberi (AR)

  • Model: RSV4G40HD-F40EZ

  • Style: Triplex, direct-drive gas

  • Max Pressure: 4,400 PSI

  • Max Flow Rate: 4.2 GPM

  • Shaft Size: 1”

  • RPM: 3,450

  • Unloader: Built-in

  • Soap Injector: Fixed

  • Manifold Material: Brass

  • Plunger Material: Ceramic

  • Inlet Connection: 3/4” GHF

  • Discharge Connection: Brass QC 3/8" (85.300.103)

  • Oil Capacity: 16 oz (30W non-detergent oil)

  • Thermal Relief Valve: 85.300.022

  • Max Inlet Temp: 60°C / 140°F

  • Weight: 14 lbs

  • Warranty: 2 Years

Backed by AR Quality

For decades, Annovi Reverberi (AR) has been known worldwide for its reliable, high-performance pumps. The RSV4G40HD-F40EZ Pump Assembly continues this legacy, offering a triplex plunger design, brass manifold, ceramic plungers, and built-in unloader in a package designed for heavy-duty cleaning.

With a 2-year warranty, this pump provides professional reliability and peace of mind.

When you need maximum PSI, high flow, and rugged durability, choose the AR RSV4G40HD-F40EZ Pump Assembly—engineered for power, designed for results, and built to last.

Frequently Asked Questions about Pressure Washers

How to store a pressure washer?

To ensure the durability of your heavy duty pressure washer:

  • Empty the gas tank to prevent fuel from degrading or clogging the engine.
  • Empty the pump and hoses of any remaining water.
  • Perform necessary maintenance before storage.
  • Store in a dry area.
  • Cover.

What is a pressure washer?

A power washer is a cleaning machine that uses a gasoline engine to power a high pressure water pump and nozzle. It’s used to clean driveways, decks, vehicles, outdoor furniture and more by spraying water at high PSI to remove dirt, grime, mold and other debris.Many models also come with a detergent tank for added cleaning power.

How does a power washer work?

A power washer works by drawing water from a connected hose and pumping it through a high pressure nozzle. The gas engine powers the pump which pressurizes the water and then expels it through the nozzle at high speed to clean the surface. The water pressure is measured in PSI (pounds per square inch) and the flow rate is measured in GPM (gallons per minute).Many models also feature adjustable water pressure settings to cater to different cleaning needs. BE makes pressure washing easy with models available for light jobs and heavy duty commercial cleaning projects.

Gas vs Electric power washers?

The main difference is that a gas pressure washer, known for its cleaning power, is powered by a gasoline engine, making it more powerful and portable, while an electric pressure washer is powered by electricity and is generally quieter and lighter.

Gas pressure washers are for heavy duty and large areas due to their durability, whereas electric pressure washers are for smaller jobs.

Your BE electric pressure washer is perfect for smaller jobs and built for portability, and we offer a wide range of electric models. Included with our electric models is a long extension cord for use anywhere around your house.

What to consider?

When choosing a gas pressure washer consider:

  • Pressure (PSI): More PSI means more cleaning power but also more potential for damaging delicate surfaces.
  • Flow Rate (GPM): More GPM means faster cleaning as more water is dispensed.
  • Engine Power: Bigger engines mean more durability and power.
  • Portability: Weight, handle design and wheel size for easier to move.
  • Nozzles: Multiple spray nozzles to adjust the spray pattern for different tasks.
  • Adjustable Nozzle: Allows for fine-tuning the spray intensity and pattern for various cleaning needs.

How much pressure do I need for?

The required pressure (PSI) and cleaning power depend on the surface you’re cleaning:

  • Light duty (car washing, outdoor furniture): 1,300-1,800 PSI.
  • Medium duty (patios, fences, decks): 2,000-3,000 PSI.
  • Heavy duty (driveways, brick walls, large equipment): 3,000+ PSI.

Many pressure washers come with adjustable pressure settings to handle different cleaning tasks effectively.

Can a pressure washing damage surfaces?

Yes, a power washer can damage surfaces if used incorrectly. High pressure water can strip paint, dent soft surfaces or even cause structural damage if the pressure is too high or the nozzle is held too close to the surface. Always use the right PSI for the material you’re cleaning and keep a safe distance from delicate surfaces.

To prevent damage, consider using a model with adjustable pressure settings.

How to maintain your pressure washer?

To ensure the durability and smooth operation of a pressure washer:

  • Change the oil as per manufacturer’s instructions.
  • Clean or replace the air filter to ensure good airflow.
  • Inspect and clean the nozzle regularly to prevent clogs.
  • Drain the gas tank if you’re storing the washer for a long time.
  • Check the hoses for leaks or damage and replace them if needed.
  • Follow regular maintenance requirements to keep the washer in optimal condition.

Can I use a pressure washer in cold weather and low water temperature?

You can use a pressure washer in cold weather but it’s more difficult. The water flow rate in the hoses and pump can freeze and damage the equipment. If you plan to use your pressure washer in cold temperatures make sure to winterize it and store it in a warm area when not in use. You can also use anti-freeze solutions for pressure washers.

Some models are designed to use hot water, which can be particularly effective for cleaning in cold weather.

Do I need any accessories?

Common accessories for power washers: