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Modular Baghouse

The MB provides reliable service with easy maintenance. Computer designed inlets and deflector plates, coupled with maximized bag spacing, result in opt​imal airflow with minimal abrasion. Advanced valves, providing 50% more cleaning air, result in a more efficient operation. Over the life of the collector, no other baghouse can provide this much value.

The MB advantage is found in the breakthrough technology of our filter bags. Dura-Life™ filter bags and Ultra-Web® pleated bag filters.  Dura-Life filter bags provide twice the life over standard 540 g/m2 / 16 oz/yd2 polyester bags. Our pleated bag options with Ultra-Web SB, provide longer filter life and reduced emissions. Both options can lower the overall cost of operation of the collector. 

Modular Baghouse Dust Collector
  • High body inlet models allow higher air-to-media ratios on lighter dusts
  • Square models help minimize ducting and accessory costs
  • Dura-Life ”Twice the Life” Bag Filters
  • Ultra-Web SB Pleated Bag option
  • Clean air bag access for easier bag service
  • Welded design increases durability
  • Integral fan option reduces space requirements
  • Tool-free installation of bag filters and cages

MBT Normal Operation

MBW High Inlet Normal Operation

Baghouse Operations That Work

The Modular Baghouse collector comes in two models: the MBT allows walk-on, top access to the bags (clean-air side) of the collector. This configuration is ideal for indoor or tight budget applications. The MBW offers a walk-in clean-air plenum, so bags can be replaced in any kind of outdoor weather.

The MB has two inlet configurations; the most common configuration allows the dirty-air to enter through the hopper inlet located under the bag filters. The dirty air hits a deflector at the end of the inlet, which causes heavy particulate to fall directly into the hopper. This reduces the amount of dust that comes in contact with the bags resulting in longer bag life and lower pressure drop. For applications with light and fibrous dust, a high body inlet is available that reduces upward air velocities allowing the dust to properly fall into the hopper after the bags have been pulsed.

Engineered for Reliable Performance

Modular Baghouses are a reflection of Donaldson Torit’s commitment to technical research and development. Sophisticated FLUENT® computer airflow analysis has been used to assure the Modular Baghouse provides a uniform airflow resulting in reduced bag abrasion, longer bag life and lower maintenance costs.

MB High Inlet with Airflow
MB High Inlet Without Airflow
MB Dumpster Discharge

Dumpster Discharge for Heavy Dust Loading

For applications with heavy dust loading, the MB has an easy to use Dumpster Discharge. This option provides either a 1.5 or 2.3 cubic meter / two or three cubic yard self-dumping dumpster that can be hauled away with the use of a forklift. The dumpster comes with a lid that seals the system so that no rotary valve is required. The lid is lifted off of the dumpster via a mechanical lift, which is included with the package.

Dura-Life Filter Bag

Two Breakthrough Filter Options for Your Modular Baghouse

Dura-Life Filter Bags Provide Twice the Life Over Standard
540 g/m2 / 16 oz/yd2 Polyester Bags

Traditional 540 g/m2 / 16 oz/yd2 polyester bags are produced via a needling process that creates larger pores where dust can embed into the fabric, inhibiting cleaning and reducing bag life. Dura-Life bags are engineered with a unique hydroentanglement process that uses water jets to blend the fibers. This process creates a felt with smaller pores which keeps more dust on the surface of the filter resulting in better pulse cleaning and longer bags life.

Dura-Life Benefits:

  • Up to two times longer bag life
  • Energy savings due to lower pressure drop
  • Reduced replacement bag and maintenance costs due to longer bag life
Ultra-Web SB Pleated Bags

Pleated Bags with Ultra-Web SB Provide Longer Life and Reduced Emissions

For more than two decades, Donaldson Torit has advanced the proven Ultra-Web nanofiber technology. Ultra-Web provides a very fine, continuous fiber of 0.2 - 0.3 micron in diameter to form a web-like net that traps dust on the surface of the media. Combining Ultra-Web technology with a sturdy spunbond polyester substrate, Ultra-Web SB pleated bag filters provide longer life, reduced downtime and reduced emissions.

Ultra-Web SB Pleated Bag Benefits:

  • Reduced collector size and first cost
  • Up to two times longer filter life
  • Energy savings due to lower pressure drop
  • Reduced maintenance and downtime costs
  • Reduced emissions​​

See Baghouse Filters >>

Collector Design Standard Optional
Clean Air Plenum with Top-Bag Removal  
Heavy-Duty Ribbed Housing Construction  
All-Welded, Carbon Steel Design - 12 Gauge Minimum  
Heavy-Duty 10-Gauge Tubesheet  
Filter Cleaning System  
Service Railing with Kickplate (MBT)  
Bottom Bag Removal  
High Temperature Construction  
Stainless Steel Construction  
Direct Drive Fans  
Power Pack Transition for TBI Fans  
Chamber and Exhaust Silencers  
Damper Pack  
Service Platform (MBW)  


Bags & Cages Standard Optional
Dura-Life Twice the Life Polyester Felt Snap-In Bags  
Ultra-Web SB Pleated Bags  
Galvanized Bag Cages  
Variety of Bag Media Options  
Articulated Cages  


Paint System Standard Optional
Prime Coated Interior  
Textured Multi-Coat Paint Finish with 2,000-Hour Salt Spray Performance  
Premium Duty Paint  
Custom Colors  


Hopper Design Standard Optional
60° Pyramid Hoppers  
Inlets with Deflector  
Trough Hopper with Multiple or Single Inlets  
Hopper Access Covers  
Inlet Transitions  
Pyramid Hopper Cover with Flood Valve  


Hopper Discharge Standard Optional
Slide Gate Pack  
208.2 L / 55 gal Drum Pack  
Dumpster Discharge with Dumpster  
AN Rotary Valves and Transitions  


Support Structure Standard Optional
1,219.2 mm / 48 in. Clearance Leg Pack (pyramid hoppers)  
Stub Legs (trough hopper)  
1,828.8 mm / 72 in. Clearance Leg Pack  
1,219.2 mm / 48 in. Clearance Ladder Pack  
1,828.8 mm / 72 in. Clearance Ladder Pack (with cages)  


Electrical Controls, Gauges and Enclosures Standard Optional
Solenoid Valves in NEMA 4 Enclosure  
Magnehelic* Gauge  
Control Timer in NEMA 4 Enclosure  
Solenoid Enclosure in NEMA 7 or 9  
Photohelic* Gauge  
Delta P or Delta P Plus Control Panel  


Safety Features Standard Optional
Sprinkler Access Ports  
Sprinkler Pack Assembly (wet or dry)  
Explosion Vents  
Ladder Safety System  


Warranty Standard Optional
10-Year Warranty  
*Magnehelic and Photohelic are registered trademarks of Dwyer Instruments, Inc.

Q. What Is a Hydro-Entanglement Process?

A. Instead of a mechanical process using needles to entangle and compress polyester fibers into a felt material, the hydro-entanglement process uses jets of water to entable and compree the polyester fibers into felt. The process creates a material that is more uniform and provides better filtration.

Q. How Are Dura-Life Bags Different from Standard Polyester Bags?

A. Dura-Life bags are made from polyester material that is created through a hydro-entanglement process instead of a needle punch process. The hydro-entanglement process creates a more consistent and uniform filter material. The material is comparable in thickness to standard polyester, but weighs about 1/3 less. The fibers are smaller and the hydro-entanglement process creates a loftier and lighter weight fabric that filters more effectively.

Dura-Life Bag Filters

A cost-effective, high performance alternative.

Pleated Bag Filter Installation and Removal

Learn how to install and remove pleated bags on the Modular Baghouse Dust Collector.

Snap Band Bag Filter Installation

Learn how to install top load snap band bag filters.