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Product / / 85.129.033B

AR RRA4G35E-F17 Pump Assembly – 4.0 GPM, 3,500 PSI, 1 1/8" Shaft

AR RRA4G35E-F17 Pump Assembly – 4.0 GPM, 3,500 PSI, 1 1/8" Shaft

Specifications

UNLOADER

External 85.300.037

WARRANTY

3 Years

RPM

1,725

PUMP MODEL

AR RRA4G35E

PUMP TYPE

Triplex

Oil Type

30W Non Detergent

Oil Capacity

13.3 oz

Thermal Relief Value

85.300.023

Max Inlet Temperature

60°C / 140°F

Manifold Type

Brass

Soap Injector

Adjustable 85.400.000

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

4.0

Shaft Size

1 1/8"

Direct Drive

Electric

Weight

17 lbs

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PRODUCT

DESCRIPTION

Professional Triplex Pump for Electric Pressure Washers

The AR RRA4G35E-F17 Pump Assembly (Bare Pump Part #85.120.033) is a triplex direct-drive pump designed for electric pressure washer systems that demand power, reliability, and long service life. Delivering 3,500 PSI at 4.0 GPM, this pump strikes an excellent balance between water flow and pressure, making it suitable for a wide range of industrial, commercial, and demanding residential applications.

Manufactured by Annovi Reverberi (AR), one of the most trusted names in pump technology worldwide, the RRA4G35E is built with ceramic plungers, a brass manifold, and an external unloader system to provide long-lasting reliability in challenging conditions. Backed by a 3-year warranty, this pump is engineered to deliver consistent, professional-grade performance.

Key Features

  • Bare Pump Part #: 85.120.033

  • Pump Manufacturer: Annovi Reverberi (AR)

  • Pump Model: RRA4G35E

  • Pump Style: Triplex, direct-drive electric

  • Max PSI: 3,500

  • Max GPM: 4.0

  • Shaft Size: 1 1/8"

  • Unloader Type: External (85.300.037)

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

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

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

  • Soap Injector: Adjustable (85.400.000)

  • Manifold Type: Brass

  • RPM: 1,725 (low-speed operation)

  • Max Inlet Temp: 60°C / 140°F

  • Thermal Relief Valve: 85.300.023

  • Oil Capacity: 13.3 oz

  • Oil Type: 30W non-detergent oil

  • Weight: 17 lbs

  • Warranty: 3 Years

Triplex Pump Design for Superior Performance

Unlike entry-level axial pumps, the triplex design of the RRA4G35E-F17 ensures smoother operation, greater efficiency, and longer service life. Its three precision ceramic plungers resist wear and heat buildup, reducing downtime and extending the life of seals and internal components.

With a maximum output of 3,500 PSI and 4.0 GPM, this pump offers the power to cut through grime, grease, and buildup while maintaining the water volume needed to clean large surfaces effectively. The 1,725 RPM low-speed design reduces vibration and heat, extending the pump’s lifespan and ensuring consistent operation in heavy-duty use.

Durable and Rugged Construction

Every component of the AR RRA4G35E-F17 is engineered for long-term durability:

  • Brass manifold provides superior corrosion resistance and heat dissipation.

  • Ceramic plungers offer unmatched wear resistance and durability under continuous duty.

  • 1 1/8" shaft provides secure compatibility with commercial-grade electric motors.

  • Robust 17 lb build ensures a solid structure that can withstand professional use.

This combination of rugged materials and precision engineering makes the RRA4G35E ideal for demanding work environments.

Integrated Features for Operator Control

This pump is designed with built-in features that enhance both usability and safety:

  • External unloader (85.300.037): Provides accurate pressure control and simplifies servicing.

  • Adjustable soap injector (85.400.000): Allows controlled application of detergents and chemicals for efficient cleaning.

  • Thermal relief valve (85.300.023): Prevents pump damage by releasing overheated water during bypass operation.

  • Quick-connect brass discharge (3/8” – 85.300.108): Ensures fast, secure, and leak-free hose connections.

These features give operators full control while protecting the pump from damage.

Maintenance and Service

The AR RRA4G35E-F17 is built with maintenance-friendly design elements to ensure reliable long-term use:

  • Requires 13.3 oz of 30W non-detergent oil for lubrication.

  • Routine oil checks and changes are simple tasks that maximize pump life.

  • Rated for inlet water temperatures up to 140°F (60°C), giving it flexibility in various applications.

By following standard maintenance practices, operators can expect years of consistent performance.

Common Applications

The RRA4G35E-F17 Pump Assembly is versatile and built to handle a wide variety of cleaning applications:

  • Industrial Cleaning – Heavy-duty washing of machinery, shop floors, and equipment.

  • Fleet Washing – Buses, trucks, trailers, and delivery vehicles.

  • Agricultural Use – Tractors, harvesters, and other large farm equipment.

  • Commercial Property Maintenance – Parking lots, sidewalks, siding, and building exteriors.

  • Surface Preparation – Removing mold, mildew, paint, and coatings before refinishing.

  • Car Wash Systems – Provides the pressure and flow required for professional-grade washing stations.

The combination of 3,500 PSI and 4.0 GPM makes this pump suitable for both precision cleaning tasks and large-scale projects.

Product Specifications

  • Part #: 85.120.033

  • Manufacturer: Annovi Reverberi (AR)

  • Model: RRA4G35E-F17

  • Style: Triplex, direct-drive electric

  • Max Pressure: 3,500 PSI

  • Max Flow Rate: 4.0 GPM

  • Shaft Size: 1 1/8”

  • RPM: 1,725

  • Unloader: External (85.300.037)

  • Soap Injector: Adjustable (85.400.000)

  • Manifold Material: Brass

  • Plunger Material: Ceramic

  • Inlet Connection: 3/4” GHF

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

  • Oil Capacity: 13.3 oz (30W non-detergent oil)

  • Thermal Relief Valve: 85.300.023

  • Max Inlet Temp: 60°C / 140°F

  • Weight: 17 lbs

  • Warranty: 3 Years

AR Quality and Reliability

Annovi Reverberi (AR) has decades of experience producing pumps that are trusted worldwide for their durability and performance. The RRA4G35E-F17 Pump Assembly carries forward this legacy with its triplex design, brass manifold, ceramic plungers, and external unloader.

With a 3-year warranty and proven AR engineering, this pump is the professional choice for electric pressure washer systems requiring reliable power and durability.

When you need a pump that delivers smooth operation, high performance, and long service life, the AR RRA4G35E-F17 is built to exceed expectations.

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: