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Product / Pressure Washers / 85.139.071B

General Pump TSF2021 Triplex Pump Assembly – 8.5 GPM, 3,600 PSI

General Pump TSF2021 Triplex Pump Assembly – 8.5 GPM, 3,600 PSI

Specifications

UNLOADER

External 85.300.033

WARRANTY

5 Years

RPM

1,750

PUMP MODEL

GP TSF2021

PUMP TYPE

Triplex

Oil Type

30W Non Detergent

Oil Capacity

37 oz

Thermal Relief Value

85.300.023 (optional)

Max Inlet Temperature

74°C / 165°F

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 85.300.033

Max GPM

8.5

Shaft Size

24 mm

Weight

42 lbs

Belt Drive

Gas / Electric

View full details

PRODUCT

DESCRIPTION

Heavy Duty Belt Drive Pump for Maximum Flow and Power

The General Pump TSF2021 Triplex Pump Assembly (Bare Pump Part #85.130.071) is for high volume, heavy duty cleaning applications that require maximum water flow and pressure. Up to 8.5 GPM at 3,600 PSI this belt drive triplex pump is for the professional who demands industrial grade performance and long life.

Built by General Pump (GP), a global leader in pump technology, the TSF2021 has a brass manifold, ceramic plungers and low RPM belt drive for cooler, quieter and longer life. With an external unloader, adjustable chemical injection and robust design this pump is built for the toughest cleaning jobs. Backed by a 5 year warranty it’s a great choice for industrial contractors, commercial operators and large property maintenance.

Features

  • Bare Pump Part #: 85.130.071

  • Pump Manufacturer: General Pump (GP)

  • Pump Model: TSF2021

  • Pump Style: Triplex, belt drive

  • Drive Type: Gas/Electric compatible

  • Max Pressure: 3,600 PSI

  • Max Flow Rate: 8.5 GPM

  • Shaft Size: 24 mm

  • Unloader: External (85.300.033)

  • Plunger: Ceramic

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

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

  • Soap Injector: Adjustable (85.400.000)

  • Manifold: Brass

  • RPM: 1,750

  • Max Inlet Temp: 74°C / 165°F

  • Thermal Relief Valve: 85.300.023 (optional)

  • Oil: 37 oz

  • Oil Type: 30W non-detergent oil

  • Weight: 42 lbs

  • Warranty: 5 Years

For the Professional

At the heart of the TSF2021 is a triplex plunger system for smooth operation, efficient water delivery and long life. The ceramic plungers resist heat and abrasion to protect seals and internal components from heavy use.

With an 8.5 GPM flow rate this pump is perfect for applications that require high volume and consistent pressure. Whether washing heavy machinery, cleaning large agricultural equipment or preparing surfaces for refinishing the TSF2021 has the perfect balance of flow and PSI to get the job done fast and effective.

Heavy Duty Construction

The TSF2021 is built for durability in demanding conditions:

  • Brass manifold for strength, heat dissipation and corrosion resistance.

  • Ceramic plungers to extend seal life and withstand high operating temperatures.

  • 24 mm solid shaft for secure connection to belt drive systems powered by gas or electric motors.

  • Weighs 42 lbs for a solid, heavy duty frame for long term stability and durability.

This heavy duty construction makes the TSF2021 a reliable choice for professional contractors and industrial operations.

Operator Features

General Pump has designed the TSF2021 with features to make it easy to use and protect the system:

  • External unloader (85.300.033) for precise pressure regulation and maintenance.

  • Adjustable soap injector (85.400.000) for flexible detergent application for better cleaning.

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

  • Optional thermal relief valve (85.300.023) for protection from overheating during bypass operation.

These features give the operator more control and reliability in the field.

Low RPM

With its belt drive the TSF2021 operates at 1,750 RPM. This lower RPM reduces vibration and heat buildup, extends seal, bearing and plunger life and reduces noise for extended use.

The pump can handle water inlet temperatures up to 165°F (74°C) for better cleaning efficiency.

Maintenance and Service

The TSF2021 is easy to maintain, minimal downtime:

  • 37 oz 30W non-detergent oil for lubrication.

  • Oil checks and changes are simple, consistent lubrication and performance.

  • Serviceable parts and heavy duty construction for long term use with regular maintenance.

Follow maintenance guidelines for maximum pump life and consistent output.

Applications

The General Pump TSF2021 Triplex Pump is a versatile powerhouse for many professional applications:

  • Industrial Cleaning – Machinery, equipment and plant facilities wash-down.

  • Fleet Maintenance – Trucks, buses, trailers and heavy duty service vehicles.

  • Agriculture – Tractors, harvesters and large farm equipment.

  • Construction – Dirt, grime and concrete residue removal from tools and job sites.

  • Property Maintenance – Large surfaces like parking lots, siding and exteriors.

  • Surface Preparation – Paint, coatings and stubborn buildup removal before refinishing.

With high GPM and strong PSI it’s one of the most versatile high volume triplex pumps available.

Product Details

  • Part#: 85.130.071

  • Manufacturer: General Pump (GP)

  • Model: TSF2021

  • Pump Style: Triplex, belt drive

  • Drive Type: Gas/Electric compatible

  • Max PSI: 3,600

  • Max Flow Rate: 8.5 GPM

  • Shaft Size: 24 mm

  • RPM: 1,750

  • Unloader: External (85.300.033)

  • Soap Injector: Adjustable (85.400.000)

  • Manifold: Brass

  • Plungers: Ceramic

  • Inlet: 3/4" GHF

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

  • Oil Capacity: 37 oz (30W non-detergent oil)

  • Thermal Relief Valve: Optional (85.300.023)

  • Max Inlet Temp: 74°C / 165°F

  • Weight: 42 lbs

  • Warranty: 5 Years

General Pump

The General Pump TSF2021 is a member of GP’s TSF Series which is renowned worldwide for its heavy duty construction, high performance and professional reliability. With its nickel plated brass manifold, ceramic plungers and low-RPM belt drive this pump is built to last.

5 year warranty, the TSF2021 gives you the long term dependability you expect. When you need maximum flow and pressure this pump delivers.

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: