Bosch 3931A-PB Airsweep Wet/Dry Vacuum Preview

Bosch 3931A-PB AirSweep Wet/Dry Vacuum Overview

The Bosch 3931A-PB AirSweep Wet/Dry Vacuum is a large shop vac with a capacity of up to 2000 cubic feet (1,200 liters). It comes in two models: 3931A and 3931B.

Both models are equipped with a front mounted motor and an optional rear mounted motor. They both have the same features and specifications.

3931A-PB AirSweep Wet/Dry Vacuum Specifications:

Model Number: 3931A-PB

Vac Capacity: 2000 cu ft / 1,200 Lb (2.7 Gallons) or 3000 cu ft / 2,500 Lb (4.3 Gallons) with optional rear mounted motor; 4000 cu ft / 5,000 Liters without optional rear mounted motor.

Rated Power: 3500 W @ 50 PSI (15,000 RPM); 5000 W @ 60 PSI (18,000 RPM)

Motor Type: Electric Motor; Gasoline Engine or Diesel Engine Compressor Included.

Operating Temp.: -20°F (-30°C), +70°F (+112°C) to 185 °F (+75 °C) Absolute Zero Temperature.

Bosch 3931A-PB Airsweep Wet/Dry Vacuum Preview - Image

Maximum Operating Pressure: 10 psi (0.5 bar).

Noise: 60 Db (A) With Standard Mounted Motor; 72 Db (A) With High Performance Mounted Motor.

Features and Specifications:

Model Number: 3931A-PB

Shipping Weight: 65 lbs (30 kgs).

Product measures 48” x 20.5” x 21” (1,200 mm x 521 mm x 533 mm).

Bag Capacity: 2.7 Gal (10 L).

Vacuum hose measures 12′ (3.6 m) long.

Wet pickup hose measures 48” (1,200 mm) long.

Floor Nozzle with Power Switch.

Convenient for storing on board.

On-Board Tools Storage.

Bosch 3931A-PB Airsweep Wet/Dry Vacuum Preview on

On-Board Crevice Nozzle.

On-Board Blower.

One-Touch Filtration Lock.

Hinged Easy-Empty Dirt Container.

Filtration Bag to be filled separately.

Powerful Airflow, Quick Pickup, with Large Wheels.

Integrated Blower/Muffler for Quiet Running.

Durable Soft Grip Handle.

Auxiliary Port for Attaching Optional Accessories.

Designed for Wet & Dry use.

Bosch 3931A-PB Airsweep Wet/Dry Vacuum Preview from our website

Auto-Reverse Filter-Belt.

Air-Teeth Belts for extended life of the unit.

High-Efficiency, High-Quality Filters.

Optional Rear Mounted Engine for increased suction power and reduced noise levels. (3931B)

The 3931B includes a rear mounted optional gas engine, which provides more power for the pickup of large debris. The unit is quieter than other shop sweepers because it runs on a lower RPM.

It is also equipped with a muffler for reduced noise levels.

Gasoline or Diesel Engine.

Other Optional Accessories:

A range of optional accessories are available for the 3931A-PB AirSweep Wet/Dry Vacuum. These include a continuous exhaust hose, an extension tube, the power nozzle, a water filter, and some others.

Reasons to buy this product:

When you need the best shop vacuum, buy a bosch. It has a strong and durable, metal construction for long life.

Bosch 3931A-PB Airsweep Wet/Dry Vacuum Preview from our website

The strong metal allows it to handle a wide range of tasks and dirt types. The device is powerful enough to suck up small stones and other debris. Since it is very powerful, it can be used to clean up large messes and spills.

It has a large collection tank of 2.7 gallons (10 liters) for extended periods of cleaning.

The machine also features a large 12” (30cm) diameter flexible hose, which allows you to reach all areas.

The 3931A-PB AirSweep Wet/Dry Vacuum is versatile, making it suitable for both wet and dry pick up. It is suitable for picking up wet or dry messes.

The machine picks up liquid suck as oil and coolant, without leaking. If you need to blow water or air into a pipe, use the included blower nozzle.

The unit has a washable filter that is easy to remove and clean. The filters are washable and can be cleaned with water.

There is also a dust filter attached to the exhaust.

Hose and Nozzle Overview:

The AirSweep has a 48 inch flexible metal hose, which is connected to the back of the unit. The hose includes a nozzle with a side mount switch.

Bosch 3931A-PB Airsweep Wet/Dry Vacuum Preview at

The high performance nozzle features 3 functions:

1: Jet Stream: A strong, focused blast of air.

2: Softer Sweep: A wider airflow for general cleaning.

3: Blower: Uses the vacuum power to blow air outwards. Good for moving dust and other debris.

The hose measures 48” (1.2m) long and 6” (15cm) in diameter.

It can be used to clean up large spills and messes. The hose is also useful for cleaning out corners and nooks, which otherwise would not be possible with a shop vacuum.

Sources & references used in this article: