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Product / / 85.129.042B

AR RRV4G40D-F24 Pump Assembly – 4.2 GPM, 4,400 PSI, 1" Shaft

AR RRV4G40D-F24 Pump Assembly – 4.2 GPM, 4,400 PSI, 1" Shaft

Specifications

UNLOADER

External 85.300.037

WARRANTY

5 Years

RPM

3,450

PUMP MODEL

AR RRV4G42

PUMP TYPE

Triplex

Oil Type

30W Non Detergent

Oil Capacity

13.5 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 85.300.108

Inlet Size

3/4" GHF

Plunger Piston

Ceramic

Unloader Type

External 85.300.037

Max GPM

4.2

Shaft Size

1"

Direct Drive

Gas

Weight

18 lbs

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PRODUCT

DESCRIPTION

Professional Triplex Pump for Heavy-Duty Cleaning

The AR RRV4G40D-F24 Pump Assembly (Bare Pump Part #85.120.042) is a high-performance triplex direct-drive gas pump designed for contractors, industrial operators, and professionals who need maximum cleaning power and long-term durability. Delivering up to 4,400 PSI at 4.2 GPM, this pump is built to power through demanding jobs where both high pressure and strong water flow are essential.

Manufactured by Annovi Reverberi (AR), one of the most trusted names in pressure washer pump technology, the RRV4G40D-F24 is built with a brass manifold, ceramic plungers, and an external unloader for precise control and long service life. Backed by a 5-year warranty, this pump provides professional-grade reliability and performance in even the harshest conditions.

Key Features

  • Bare Pump Part #: 85.120.042

  • Pump Manufacturer: Annovi Reverberi (AR)

  • Pump Model: RRV4G42

  • Pump Style: Triplex, direct-drive gas

  • Max PSI: 4,400

  • Max GPM: 4.2

  • Shaft Size: 1" horizontal shaft

  • Unloader Type: External (85.300.037)

  • Plunger (Piston): Ceramic for wear and heat resistance

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

  • Discharge Size: 3/8" Brass QC (85.300.108)

  • Soap Injector: Fixed

  • Manifold Type: Brass for strength and corrosion resistance

  • RPM: 3,450

  • Max Inlet Temp: 60°C / 140°F

  • Thermal Relief Valve: 85.300.022 included

  • Oil Capacity: 13.5 oz

  • Oil Type: 30W non-detergent oil

  • Weight: 18 lbs

  • Warranty: 5 Years

Engineered for Professional Power

The triplex plunger design is the standard for professional pressure washer pumps, offering smoother operation, reduced vibration, and greater efficiency compared to axial designs. With three precision ceramic plungers, the RRV4G40D-F24 is engineered to withstand heat, abrasion, and heavy-duty use.

With 4,400 PSI of cleaning power and 4.2 gallons per minute of flow, this pump provides the ideal balance of high pressure and strong water volume. That makes it an excellent choice for contractors and property managers who need both cutting power for stubborn grime and the water flow needed to quickly cover large surfaces.

Rugged Build Quality

The AR RRV4G40D-F24 is built with durable, professional-grade materials:

  • Ceramic plungers deliver long-lasting resistance to heat and wear.

  • Brass manifold enhances corrosion resistance and dissipates heat to extend seal and pump life.

  • 1" horizontal shaft ensures compatibility with a wide range of commercial-grade gas engines.

At 18 lbs, the pump offers rugged construction while being manageable for installation and servicing.

Integrated Features

The RRV4G40D-F24 is designed with features that make operation simpler, safer, and more effective:

  • External unloader (85.300.037): Provides precise control of operating pressure and makes servicing straightforward.

  • Fixed soap injector: Enables chemical and detergent application when using a low-pressure nozzle.

  • Brass quick-connect discharge (3/8” – 85.300.108): Offers reliable, leak-free hose connections.

  • Thermal relief valve (85.300.022): Protects the pump during extended bypass cycles by releasing overheated water.

Easy Maintenance

The pump is designed with serviceability in mind to ensure long-term performance:

  • Requires 13.5 oz of 30W non-detergent oil for lubrication.

  • Oil checks and scheduled oil changes are easy, low-cost maintenance tasks that keep the pump running smoothly.

  • Capable of handling water inlet temperatures up to 140°F (60°C), giving it flexibility in demanding environments.

These simple maintenance practices extend service life and keep performance consistent over years of use.

Applications

The AR RRV4G40D-F24 Pump Assembly is ideal for professionals who require both high pressure and dependable flow. Common uses include:

  • Construction Sites – Clean mud, concrete residue, and dirt from heavy machinery and equipment.

  • Fleet Washing – Wash large trucks, buses, and trailers with powerful, efficient performance.

  • Agriculture – Maintain tractors, harvesters, and other farm machinery.

  • Commercial Property Maintenance – Tackle large cleaning tasks including parking lots, siding, walkways, and patios.

  • Industrial Cleaning – Remove grease, oil, and buildup from machinery and shop floors.

  • Surface Preparation – Strip paint, mold, and coatings to prepare surfaces for refinishing.

Its high PSI rating ensures effective cleaning of the toughest grime, while its 4.2 GPM flow makes it efficient for broad coverage jobs.

Product Specifications

  • Part #: 85.120.042

  • Manufacturer: Annovi Reverberi (AR)

  • Model: RRV4G42

  • Style: Triplex, direct-drive gas

  • Max Pressure: 4,400 PSI

  • Max Flow Rate: 4.2 GPM

  • Shaft Size: 1” horizontal shaft

  • RPM: 3,450

  • Unloader: External (85.300.037)

  • Soap Injector: Fixed

  • Manifold Material: Brass

  • Plunger Material: Ceramic

  • Inlet Connection: 3/4” GHF

  • Discharge Connection: Brass QC 3/8" (85.300.108)

  • Oil Capacity: 13.5 oz (30W non-detergent oil)

  • Thermal Relief Valve: 85.300.022

  • Max Inlet Temp: 60°C / 140°F

  • Weight: 18 lbs

  • Warranty: 5 Years

Backed by AR Quality

With decades of experience in pump manufacturing, Annovi Reverberi (AR) is known worldwide for building pumps that deliver professional-grade performance and unmatched reliability. The RRV4G40D-F24 Pump Assembly continues this tradition with its triplex design, brass manifold, ceramic plungers, and external unloader for powerful and long-lasting operation.

Backed by a 5-year warranty, this pump gives professionals peace of mind along with top-tier cleaning power.

When your job demands maximum PSI, rugged durability, and reliable flow, the AR RRV4G40D-F24 Pump Assembly is the professional’s choice—engineered to perform, 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: