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UMA Dust Collectors


The UMA Series of dust control systems are designed to provide economical and effective solutions to a wide variety of dust problems throughout industry. A high quality, compact design solution for dust control problems.

The UMA dust control system is a completely self contained fabric filter designed for intermittent duty. Fitter cleaning is automatically activated when the dust unit is turned off. The UMA is based on seven fabric areas between 150 Ft 2 and 750 Ft 2 with a range of standard components and accessories which can be assembled in hundreds of different combinations.

The UMA dust control units are complete including fan, easy access filter assembly
, triple inlet hopper and dust container with quick release sealer gear.


The dust laden air from the dust generation source is drawn through the inlet to the fitter by the fan. Initially, some pre-separation takes place as heavier dust particles lose momentum and fall into the collection bin or hopper. Finer dusts are carried up to the filter elements where they are retained on the outer surface of the filter fabric. The cleaned air passes through the filter fabric, into the fan chamber and is discharged. When the fan is switched off, the filter fabric cleaning cycle is automatically activated. The collected dust is then dislodged from the filter elements and falls into the collection bin below. On normal applications, the optimum interval between cleaning cycles would be four hours.


Catalog Number Model Filter Area
Shipping Weight
030H-020 UMA 150 150 650 700
030H-030 UMA 250 250 2000 1000
030H-040 UMA 750 750 6000 2000

Accessories, such as Acoustic Diffuser (Reduces Noise); Secondary Fitter (For Use With Hazardous Ousts); Explosion Relief (For Use With Explosive Ousts); Weather Cowl (Vents Clean Air Out Side of Machine) are available as options. For Oust Control Units which require greater than 10,000 CFM, the reverse jet dust control units are recommended, or in applications where continuous operation is required.

Model Airflow (CFM) Cloth Area # Filter Bags # of Bins/Drums Inlet Dia (In.) Shipping Weight (Lbs) Noise Level (dB) with Diffuser
UMA 150 450-2000 150 1 1 8 650 74
UMA 250 450-3000 244 1 1 10 1265 74
UMA 750 2000-8000 750 2 2 14 2350 79

Sample Dust Calculations for determining the size of a dust collector are shown below.

The capture velocity of dust is determined upon the density of the particle, and most importantly, the particle size. From a practical standpoint. this evolved in to use full statistical generalities, such as the quantity of dust liberated by each process, and relating it to a air velocity that will capture the dust and move it to a dust collector.

So the number of items of equipment that generate dust, and the types of equipment are the largest detenninant of the size of a dust collector required. Another important factor, is the Open area of the dust hood (the smaller, the less air required} and the distance from the dust hood to the dust source. The closer, the less air required to remove the dust If the machine is basically enclosed, the dust may be extracted from the bottom, taking advantage of gravity, and requiring less air, as well.

These are the basic elements that come into play when sizing a dust control system.

Very low dust emission

50-100 FPM

Active emissions

200-500 FPM

High velocity emission (hammermill, pulverizer)

200-2000 FPM

Name of Dust Control Station Quantity of Air (CFM) Capture velocity at source of dust (FPM) Distance from hood to dust source (Ft) Area of open
face of hood (Ft Sq.)
D-1 Hammermill 2275 350 0.5 4
D-2 Pulverizer 2275 350 0.5 4
D-3 Jaw Crusher 660 200 0.5 0.8
D-4 Splitter 487.5 75 0.5 4
D-5 Rock Saw 975 150 0.5 4

SEPOR, INC 718 N FRIES AVE. WILMINGTON, CA 90744  |  310 830 6601  |  Fax: 310 830 9336  |

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