Solutions for your Control Method

Back-Draft exhaust hoods and systems can be an essential component of a Local Exhaust and Ventilation system.

Key Design Criteria: 

Capture velocity: When designed with capture velocity in mind, Back-Draft hoods are an excellent 'No-Fuss' way of removing respirable hazards and improving air quality in your facility. All aerosols have a speed at which they can be drawn into a hood. You must be able to capture it if you are going to control it.

Face Velocity: Understanding the appropriate face velocity is not only essential for the proper capture of airborne pollutants, but it will also determine the noise generated at the hood. It is common to see poorly designed LEV systems with unacceptable noise levels.

Transport Velocity: Evaluating your hood's transport velocity will help you understand whether you will have the contaminant fall out of the airstream and stay in your hood. This could lead to a falling hazard or, perhaps worse, a fire hazard.

Conclusion:

If you take the time and follow these and other relevant design criteria & recommendations such as ASHRAE, SMACNA, ACGIH, you will be well on your way to a successful ventilation solution.

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Ideal for large bays typical in DOT, Military and heavy equipment service shops, these Articulating Crane Drops cover a extensive working range without interfering with obstacles such as overhead or Jib cranes. These systems are available in a multitude of hose diameters starting from 3" and going all the way up to 12" in diameter. In addition to the vast range of hose diameters, these systems also are available in different temperature ratings suitable for even the most extreme exhaust conditions such as dynamometers were temperatures can exceed 1500 degrees F.

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Sometimes the best solution for extracting fumes is right on the table. Sometimes the best solution for extracting welding fumes is right on the table. Downdraft Tables. The downdraft table serves as a workbench and is ducted to an external fan or filtration unit. A rigid grill supports the work, while the external fan or filtration system draws smoke and fumes down and away from the worker's breathing zone. A worker can weld, grind, and cut on the same table.

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Totally concealed, ceiling mounted air cleaners ideal for offices, lunchrooms, meetings rooms and computer rooms. A quiet yet efficient solution to clean work space.

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For those who require a "Pre-Engineered" Solution comprised of an Extraction Arm(s), a filtration system and a fan, these solutions may be ideal. They range from simple 1 to 4 station systems and are available with a multitude of options such as self-cleaning filters, preventative maintenance gauges, etc. As a "Pre-Engineered solution they are easier to install, have a quicker delivery and are most often more cost effective due to their production methods.

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Canopy hoods, or exterior hoods, are those which are located above an emission source without enclosing it. Where the contaminant is a smoke, fume, or fine particulate and is not emitted with any significant velocity, the hood orientation is not critical. However, if the contaminant contains large particulates which are emitted with a significant velocity, the hood should be located in the path of the emission. As with welding, the process emits hot contaminated air and rises due to thermal buoyancy.

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Quite often “Clean Air” solutions are required throughout a workplace. Here are numerous systems that can be moved from location to location with ease. All of the systems come with either “Washable", "Self-Cleaning" or "Throw-Away” filters and are equipped with fan/motor assemblies to ensure adequate extraction at all times. We have put the word “Mobile” in brackets as we want to let you know that, even though these solutions may move very well across the shop floor, they may not be the best solution for bringing to the job-site. Please see “Off-Site” portable solutions for more details on these applications.

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Portable Vehicle Exhaust Extraction System are an ideal solution used in dealing with exhaust gases coming from "Non-Permanent" applications. These solutions come complete with Inlet and exhaust hoses, a "Non-Sparking" blower and a tailpipe adapter suited to most tailpipes. Features worth considering:

• Withstand temperatures from exhaust
• Ability to withstand the abrasion caused by the carbon soot particles
• Robust construction
• easy to roll/maneuver around apparatus and other equipment
• Wash down construction
• Crush proof exhaust hoses
• No need to physically connect to the apparatus
• Ability to exhaust a variety of other applications eg: Brake/Engine cleaners, BBQ, Spray balm, etc.)

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LEV-CO offers a wide variety of OEM replacement Parts for most brands of dust & Powder collection equipment. In addition we also offer filters: Air Intake systems, Regenerative air dryers and most custom engineered applications. AFFORDABLE REPLACEMENT MEDIA FOR THE FOLLOWING BRANDS: Torit® - Donaldson® - Farr® - AAF® - Wagner® - Dust Hog® - Binks® - ITW Gema® - Micro Air® - Wheelabrator® - Diemco® - Sly® - JBI® - Trion® - Fred® - Diversitech® - Enviroflex® - Nederman® - Plymovent® - Zeroblast® - Clemco® - Mac® - Polaris® - Scientific® - and MORE In this section we offer a sample of some of the dust collection filters we offer. If you don't see the one you are looking for, please email us with your specific requirements. When emailing us, please provide the 1 - Manufacturer's name, 2 - the Model number of the collector & 3 - the OEM filter part number if possible, if not please simply let us know the filter dimensions and we'll take it from there.

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Here we show solutions for extracting MIST at source with the use of a dedicated filter/fan unit. Most of our customers who purchase these solutions do so because they either re-tool regularly, prefer a system without extensive ductwork and appreciate that this equipment can upgraded if the air quality legislation changes. The solution can also be re-applied to a new applications if the current process is eliminated, removing the need to alter ductwork and ensuring a long life span of the products. Please Note: as these filters are "SELF-DRAINING" it is important that the amount of dust being captured by these systems does not exceed more than 5% of the total extracted pollutant. If the dust quantity is kept to a minimum, filter life can be expected between 1 and 5 years depending on the application and runtime.

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An ideal solution where pollutants & fugitive emissions need to be captured at source. Available in Stainless Steel, these “Arms”, also referred to as extractors, consist of tubes and/or hoses coupled with a self-supporting mechanism that allows the extraction hood to stay in place and hover near the source of pollution and/or emission. Typically these extractor arms can draw the pollutant from a distance up to 30” depending on the diameter of the arm and the type of fan used. These extractors have working radii of up to 40 feet, and come in multiple diameters required by different applications. These are ideal solutions in Pharmaceutical, chemical, and other applications where "Non-corrosive" or "Wash-Down" Products are required.

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Quite often “Clean Air” solutions are required throughout a workplace. Here are numerous systems that can be easily used. All of the systems come with either “Washable", "Self-Cleaning" or "Throw-Away” filters and come available with either integrated or "Bolt-On" fan/motor assemblies to ensure adequate extraction at all times.

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An ideal solution for a small office, meeting room or lunchroom. These units are typically mounted on the wall in the corner of a room to provide a circular motion of the filtered air.

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This solution is probably one of the most efficient solutions we have ever offered. It involves the removal of the smoke and/or dust right from the “Jig” or fixture. As we extract the pollutants right off the fixture, we don’t let any of the contaminants pass through the workers breathing zone. This also ensures longer filter life, cleaner work zones and lower energy costs from motors and acclimatized air.

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