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Home > Resources > Case Study: Solenoid Valves and Blast Gates for Hazardous Applications

Blast Gates with Explosion Proof Solenoids

Blast gates serve as energy-saving devices for industrial dust extraction in situations where extraction isn't constantly required and manual control needs to be removed.

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Explosion Proof Solenoids

Home > Resources > Case Study: TR1 Specifications

Home > Resources > Case Study: Tiltable Vacuum Bin Kit

Tiltable Bin Kit for Easy Discharge

High Bulk-Density material like wet sand can be tricky to discharge because they weigh so much.

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Tiltable Bin Kit

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Home > Resources > Case Study: Industrial Vacuum Tools - General Purpose

Industrial Vacuum Tools

Industrial Vacuum Tools - General Purpose

Home > Resources > Case Study: Overhead Vacuuming Brochure XP

Home > Resources > Case Study: Overhead Vacuuming Tools - Non-Sparking

High-Reach Static Conductive Vac Tools

Lightweight Overhead Carbon Fiber Cleaning Kit for Explosive atmospheres

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Overhead Vacuuming Brochure XP

Home > Resources > Case Study: Portable Ambient Collector XP

Ambient Dust Collector for XP Dust

The AER POD is a practical solution in production spaces where airborne dust and odor is a problem

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Controlled Air Design AER POD Brochure

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Home > Resources > Case Study: Industrial Odor Eliminator | VOC Filtration | XP | Carbon

Ducted Portable VOC Extractor XP

The highly porous structure of activated carbon binds odor molecules and pollutants.

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Home > Resources > Case Study: Key aspects of welding and thermal cutting filtration

Key aspects of welding and thermal cutting filtration

To mitigate these risks, filtration systems are used to capture and remove these contaminants from the air.

Why is filtration important?

Worker Health:

Welding and thermal cutting processes release various metal fumes and gases, some of which are toxic and can cause respiratory problems, skin irritation, and long-term health issues

Environmental Compliance:

Regulations often require businesses to control emissions of dust and fumes to protect the environment.

Equipment Protection:

Uncontrolled fumes can accumulate on machinery, electrical components, and other equipment, leading to damage and downtime.

Productivity:

A healthy and safe working environment can boost productivity by reducing worker stress and absenteeism.

How do filtration systems work?

Extraction:

Welding fume extractors use fans or suction to draw in the air containing fumes and dust.

Filtration:

The captured air then passes through a filter, which removes the contaminants.

Recycling or Exhaust:

The clean air is either recycled back into the workplace or expelled outside, depending on the specific filtration system.

Types of Filtration Systems:

Dust and Fume Collection Systems:

These systems are designed to capture and filter welding fumes and dust from processing areas or entire facilities.

HEPA Filtered Welding Fume Extractors with AUTO-Pulse

HEPA Filters:

These filters are highly efficient in capturing fine particles, including those found in welding fumes.

Cartridge IFA/BGIA M-PES and HEPA H13 ABSOLUTE FILTER

Active Carbon Filters:

Dust Collector Exhaust Plenum - Contains 50 lbs. of 4mm activated carbon pellets

These filters are used to remove paint mists and other gaseous contaminants from welding fumes.

A custom blend of activated carbon pellets and potassium permanganate pellets is used to eliminate odors. Having the right amount of “dwell time” for the VOC within the carbon is essential to the success of the unit.

Different contaminants call for different kinds of filtration

Horizontal Media Collector

Different contaminants call for different kinds of filtration. HEPA won't eliminate VOC and Carbon won't filter particulate all that well.

Sometimes a combination of filtration is called for. What order they go in is crucial also.

Click on some of the links below or give us a call!

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Home > Resources > Case Study: Barrel Vac

BARREL VAC

The Barrel Vac is able to convert a 55 gallon drum into a large capacity vacuum.

Vacuum Cleaners for Class II, Division 2

Div 2 explosion-proof vacuum cleaners are designed for specific applications involving the pickup of hazardous materials

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Home > Resources > Case Study: Industrial Floor Scrubbers

Industrial Floor Scrubbers

Compact, powerful floor scrubbers that will take care of all of your industrial and commercial floor cleaning needs.

NEMA Ratings for Industrial Vacuums Explained

These ratings help ensure that the chosen enclosure is suitable for the specific application and environment.

NEMA Explained

NEMA ratings are a standard system developed by the National Electrical Manufacturers Association (NEMA) to classify electrical enclosures based on their ability to protect internal components and personnel from external environmental conditions and hazards.

Key Aspects of NEMA Ratings and Protection Levels:

NEMA ratings indicate the level of protection an enclosure provides against various environmental factors like dust, water, and corrosion.

Application Specific:

The ratings help engineers and manufacturers select the appropriate enclosure for their specific needs, ensuring that the enclosure can withstand the intended operating conditions.

NEMA ratings also consider protection against personnel access to hazardous parts within the enclosure.

Common NEMA Ratings:

NEMA 1 (General Purpose):

Designed for indoor use and provides protection against light dust and indirect splashing, but it is not dust-tight.

NEMA 3R (Weatherproof):

Primarily for outdoor use, offering protection against rain, ice, and snow.

NEMA 4 (Watertight):

Designed for both indoor and outdoor use, offering protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, and hose-directed water.

NEMA 4X (Corrosion-Resistant):

Similar to NEMA 4, but with additional corrosion resistance for use in harsh environments.

NEMA 12 (Industrial):

Suitable for indoor use and provides protection against falling dirt, circulating dust, and lint.

NEMA 4X (Corrosion-Resistant):

Similar to NEMA 4 but with added corrosion resistance for use in harsh environments.

Type 5 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and settling airborne dust, lint, fibers, and flyings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).

Type 6 Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (hose directed water and the entry of water during occasional temporary submersion at a limited depth); and that will be undamaged by the external formation of ice on the enclosure.

Type 6P Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (hose directed water and the entry of water during prolonged submersion at a limited depth); that provides an additional level of protection against corrosion and that will be undamaged by the external formation of ice on the enclosure.

NEMA 7 and 10 Starters for Hazardous Locations

NEMA requirements for vacuums in HAZLOC

In Hazardous Locations, when completely and properly installed and maintained, Type 7 and 10 enclosures are designed to contain an internal explosion without causing an external hazard. Type 8 enclosures are designed to prevent combustion through the use of oil-immersed equipment. Type 9 enclosures are designed to prevent the ignition of combustible dust.

Type 7 Enclosures constructed for indoor use in hazardous (classified) locations classified as Class I, Division 1, Groups A, B, C, or D as defined in NFPA 70.

Type 8 Enclosures constructed for either indoor or outdoor use in hazardous (classified) locations classified as Class I, Division 1, Groups A, B, C, and D as defined in NFPA 70.

Type 9 Enclosures constructed for indoor use in hazardous (classified) locations classified as Class II, Division 1, Groups E, F, or G as defined in NFPA 70.

Type 10 Enclosures constructed to meet the requirements of the Mine Safety and Health Administration, 30 CFR, Part 18.

Type 12 Enclosures constructed (without knockouts) for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and flyings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).

Type 12K Enclosures constructed (with knockouts) for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and flyings); and to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).

Type 13 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers, and flyings); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing); and to provide a degree of protection against the spraying, splashing, and seepage of oil and non-corrosive coolants

Explosion-Proof Motors and Starters offered by us:

Explosion-Proof Motor and Starter

Sprecher+Schuh NEMA Type 4/4X/7/9 Explosion Proof Starters

VL5030 Baldor Explosion Proof General Purpose Motor, Specification Number 35E373-0199G1, UPC 781568451663

1.5HP, 3450RPM, 1PH, 60HZ, 56C, 3528L, XPFC, F1
Class - CLI GP D; CLII GP F,G
Division - Division I

FAQ

Click on the question to see the answer

What does Hazardous Locations (HAZLOC) mean?

What does Class and Division mean?

Class I

Class I: Gases or vapors. Class I hazardous areas may contain flammable vapors or gases in quantities large enough to cause a fire or an explosion. Examples of these gases and vapors include hydrogen, carbon monoxide, and ethylene oxide.

Class II

Class II: Dust. Class II hazardous areas may contain combustible or conductive dust in quantities large enough to cause a fire or an explosion. Examples of these dusts include metal dusts such as aluminum dust or carbon-based dusts such as coal dust.

Class III

Class III: Fibers. Class III hazardous areas may contain fibers and small airborne parts in quantities large enough to ignite and cause a fire or an explosion. Examples of these include wood, plastic, and grain.

Division 1

Div. I High-Probability locations are defined as an area where the amount of combustible dust is either suspended in the air or accumulated on surfaces in a sufficient concentration to allow for ignition.

All day production would usually be Div. 1.

Division II

Div. II Low Probability locations are usually defined as maintenance areas, or intermittent production.

What does HAZLOC Groups mean?

HAZLOC NEMA Requirements

NEMA to IP Conversion

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Home > Resources > Case Study: Selecting a Vacuum Sweeper for Clean Air

Selecting a Vacuum Sweeper for Clean Air

Proactively acquiring the right equipment and implementing proper protocols will mitigate various issues in the future.

A dusty floor comes with health risks

Respiratory Irritation:

Dust particles can irritate the nose, throat, and lungs, causing symptoms such as coughing, sneezing, and difficulty breathing.

Allergies:

Some individuals may develop allergic reactions to specific dust components, resulting in symptoms like skin rashes, nasal congestion, and breathing difficulties.

Asthma:

For those with asthma, dust exposure can exacerbate symptoms, leading to increased wheezing, chest tightness, and difficulty breathing.

Chronic Lung Diseases:

Prolonged exposure to dust, especially certain types like silica dust, may lead to chronic lung diseases such as silicosis, which can impair lung function and increase the risk of tuberculosis and lung cancer.

Known carcinogens are generated from various industrial processes

Cement dust contains silica, stainless steel dust contains hexavalent chromium. Both are known carcinogens. Having a layer of dust on a floor is a hazard every time that dust is kicked by human traffic, equipment, HVAC, and a variety of means.

Solutions for clean floors in production areas:

HEPA Filtered Vacuum Sweepers

Available in Gas, Electric, and Lithium-Ion

We have solutions for every type and size of industrial or commercial floors. From critical environments where HEPA is needed, banquet halls to tennis courts, dusty wood shops, we have a solution. Fill out the form and we will be in touch.

High Power Industrial Vacuums for High Volume

This page is to demonstrate cost saving measures of owning versus renting for big cleanups.

Heavy-Duty Vacuums Steel Mills and Mines

OSHA Approved HEPA Vacuums for Silica and Hex-Chrome

In 2017, OSHA updated its silica dust regulations, reducing the permissible exposure limit (PEL) to 50 micrograms per cubic meter of air (µg/m3) averaged over an 8-hour workday. This standard also established an action level (AL) of 25 µg/m3. The updated rules, first enforced in September 2017 for the construction industry, require employers to ensure that worker exposure to silica dust remains below the PEL.

Permissible Exposure Limit (PEL):

The PEL is now set at 50 µg/m3, meaning the maximum amount of silica dust an employee can be exposed to over an 8-hour period is 50 micrograms per cubic meter of air.

Control Measures:

OSHA requires employers to use engineering controls, work practice controls, and respirators to keep worker exposure to silica dust at or below the PEL. One of these methods of controlling the dust is use of HEPA Filtration.

Vacuum Trucks are expensive and not efficient

The return on investment is instantly apparent when you contrast the costs of renting a vacuum truck versus owning a vacuum that you can slide into your own truck and take care of remote spills instantly.

The Solution

For mines or steel mills where big vacuuming jobs can only be done with rental vac trucks, owning an ATLAS Portable HEPA Vacuum ends up paying for itself in no time. Fill in the web form and we will be in touch to discuss your application so that we can send you a quote.

Trailer Mount Industrial Vacuum for Remote Cleanup

Finding the right and safe solution

At no additional cost, we offer decades of knowledge and experience, available at your disposal every day of the week.

Take Your Time To Do Some Research

A five minute conversation is all we need to send a formal quote for the correct vacuum

NFPA 660 - 2025

We use NFPA 660 as a guide to recommend the appropriate solution in terms of compliance and productivity. We believe that you shouldn't take any short cuts with critical equipment purchases as too many things are at stake.

If you see a “buy-it-now” next to an XP vacuum or dust collector that is not a good sign. There are too many things that can go wrong doing that.

You can buy the correct vacuum or dust collector frum us and we will sign off on it, and provide full support going forward.

Don't trust a vacuum provider that uses buy-it-now

We have every kind of industrial vacuum and dust collector for ORDLOC and HAZLOC. Call us today, and don't take chances with aggressive vacuum providers with buy-it-now ads that pop up everywhere after you visit their website. We believe that purchasing an XP vac requires a detailed discussion about the application. We are always available to answer the phone before, during, and after you purchase the equipment.

More about us HERE

"Our vacuum is also a dust collector"

This is a common claim from vacuum companies that lack a dust collector to offer you for your pouring or batching process.

The reason a vacuum won't function properly as a “dust collector”.
A vacuum won't function properly as a “dust collector” because the area has a direct relationship to air volume. Vacuums feature a small diameter inlet to achieve the required capture velocity when pulling dirt and dust off a flat surface. Expanding the inlet to allow for greater volumetric flow directly reduces static lift, diminishing vacuuming power.

A wider inlet and a different fan design are necessary to effectively capture airborne dust. Dust collectors lack the high static lift that vacuums possess, as they would only end up sucking up the product when all you need them to do is capture the "lighter-than-air" nuisance dust.

Conclusion

When you purchase equipment from us, you are also getting a relationship at no additional cost that will come in very handy whenever you have dust, mist, oil, or VOC in your facility that needs to be addressed while keeping compliance, safety, and productivity at the forefront. Free professional help for our clients is always just a call or email away. We are prompt, highly technical, and will treat your unique application with the utmost care, respect, and dedication.

Some of our valuable clients:

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Home > Resources > Case Study: Wet Dust Collectors are often misused

Wet Dust Collectors are often misused

For Conductive Metal Dust a Wet Collector is really your only choice

How to pick the correct Downdraft or Wet Collector

Dust Hazard Analysis (DHA) is the first step

A Dust Hazard Analysis (DHA) is a systematic process defined by NFPA 660 to identify and evaluate potential fire, deflagration, and explosion hazards associated with combustible dust and particulate solids in a facility, offering recommendations to manage those risks.

Once your dust is analyzed it is best to follow the direction of your AHJ or EHS, and the recommendations given by the testing lab.

If you are sanding conductive metal, a Wet Dust Collector is essential.

If you are sanding conductive metal, a Wet Dust Collector is essential. OSHA prohibits the use of HEPA filters in Wet Collectors unless they are equipped with a heat sensor that shuts them down. This is because aluminum fines can remain in the HEPA filter after drying, which poses a fire hazard and has led to fires.

A wet dust collector filters to about 10 micron

Other than conductive dusts, Wet Collection is quite inefficient and can lead to a lot of dust-bypass. Having visited lots of plants where wet dust collection is used, the first thing you will notice is dust all over the floor. This is because most wet dust collectors don't have proper HEPA filtration as water and paper are not a good combo, for a lot of reasons.

Applications where Wet Dust Collection is not suitable

If you are sanding plastics, or graphite, anything with Silica, then you need proper HEPA Filtration that captures particulate down to .3 micron at 99.97% efficient. Water as your main filter will only allow the dust to completely bypass the unit.

HEPA Filtered Downdraft for Non-XP Metals

Ducted Wet Collector for XP Titanium and Aluminum Dust

Wet Downdraft for XP Titanium and Aluminum Dust

NFPA 660 Downdraft for ST1 XP Dust

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Home > Resources > Case Study: Indoor Air Quality (IAQ)

Ventilation Investigation

Traditionally, non-industrial ventilation systems (HVAC) were designed to regulate temperature, humidity, and odors.

OSHA Industrial Ventilation Requirements

Sick-Building Syndrome

Sick Building Syndrome (SBS) refers to a situation where building occupants experience a variety of health and comfort issues that seem linked to the time spent in a particular building, but where no specific illness or cause can be identified

A. Ventilation may be deficient in:

confined spaces;
facilities failing to provide adequate maintenance of ventilation equipment;
facilities operated to maximize energy conservation;
windowless areas; and
areas with high occupant densities.

Any ventilation deficiency must be verified by measurement.

B. There are five basic types of ventilation systems:

dilution and removal by general exhaust;
local exhaust (see Figure III:3-1);
makeup air (or replacement);
HVAC (primarily for comfort); and
recirculation systems.

The complete Manual can be accessed in the link below:

OSHA Technical Manual (OTM)
Section III: Chapter 3

Solutions for clean breathable air in your workspace.

Toxic dust and volatile organic compounds, such as formaldehyde, often contribute to indoor air contamination. The products available in these links are designed to integrate with your process, ensuring that the air remains clean and breathable without sacrificing productivity.

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Home > Resources > Case Study: Standard 45 YLs

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Home > Resources > Case Study: Standard 90 TYs

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Home > Resources > Case Study: Standard Radius Elbows

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Home > Resources > Case Study: Conveying Velocities of Common Dusts

Velocity Requirements for XP Dust

Minimum Conveying Velocities of common contaminants to prevent dust "laying down" in ducting

Conveying Velocity Requirements

The Class and Div requirements are only half of the picture

If the right amount of CFM isn't provided, then over time the duct will fill up with dust accumulation and eventually collapse. We take several factors into consideration to calculate how many CFM are required. Elbows and other resistance points are all taken into consideration to ensure effective and timely evacuation of the contaminants. .

NFPA Minimum Conveying Velocity for Common Contaminants

Capture Velocity Requirements

An ideal scenario for optimal operation is 3000 to 4000 fpm in the ductwork and a capture velocity of 150 to 300 fpm.

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Home > Resources > Case Study: Kst Values for Common XP Dusts

Kst Values for Common Organic Dusts

This classification system is designed to help guide you to the correct equipment choice.

Kst Values of Common Organic Dusts

Kst values, measured in bar.m/s, quantify the relative explosion severity of dusts, with higher values indicating a more explosive potential. Here's a breakdown of common dusts and their Kst values, along with their corresponding explosion classes:

Kst Values for Common XP Dusts

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Home > Resources > Case Study: Ambient Dust Collection Units

Ambient Dust Collection

Solutions for welding and machine shops have that clouds of haze and smoke

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Ambientaire Brochure

Home > Resources > Case Study: Hexavalent chromium is a known carcinogen

Methods For Controlling Hexavalent Chromium Dust Exposure

Consider source capture systems, tip extraction, and enclosures to minimize exposure and ensure compliance with safety standards.

Extraction Solutions for Dust Containing Hex-Chrome

What is Hexavalent chromium?

Hexavalent chromium (Cr(VI)), a toxic form of chromium, is a known human carcinogen, particularly when inhaled, leading to increased risk of lung cancer and other cancers.

OSHA Regulations:

The Occupational Safety and Health Administration (OSHA) recognizes hexavalent chromium as a carcinogen and has specific regulations to limit worker exposure.

OSHA-3373-hexavalent-chromium

Welding can produce Hex-Chrome and other toxic gasses

During welding, the high temperatures oxidize chromium in the metal to its hexavalent state (Cr(VI)), which is a toxic form of chromium.

Other Toxic Fumes and Gases:

Besides hexavalent chromium, welding fumes can contain other harmful substances like iron oxide, manganese, nickel, and other metal oxides.

Source Capture of Welding Fumes

The preferred method for capturing hex chrome dust is a Dust Collector or a Vacuum, with a High-Efficiency Particulate Air (HEPA) filter, which captures 99.97% of particles 0.3 microns in size.

Click HERE for more information.

Wet Collectors

Consider wet collectors for safely collecting conductive metals, explosive, or impact-sensitive materials.

Click HERE for more information.

Vacuum with Endless Bag (Longopac)

This is a completely sealed vacuuming operation where there is no ambient exposure of the dust once it enters the hose. The Industrial vacuums utilizes HEPA Filtration and a direct-bagging system where the toxic dust goes directly into a bag with zero exposure to the operator.

Click HERE for more information.

Fume Exhaust Welding Guns

Torch Extractors that couple a narrow suction hose to the welding gun is an excellent way of source extraction that stops and starts each time you lull the torch trigger.

Click HERE for more information.

Filter Media

Use high-efficiency nanofiber media with a tested MERV 15 or MERV 16 efficiency for primary dust collection filters.

Click HERE for more information.

Ventilation

Consider ambient dust collection systems or fume extractors to mitigate fumes throughout the facility.

Click HERE for more information.

Housekeeping

Prevent the spreading of dust and fumes by vacuuming regularly with a HEPA vacuum.

Click HERE for more information.

Ambient Dust Collection

A good option for welding smoke is overhead ambient style units. One or two of these in a shop can can the air clean all day. Email us the dimensions of your shop so that we can calculate how many CFM you will need.

Click HERE for more information.

Vacuuming safety measures for corn and grain dust

Grain dust is highly combustible and can create an explosion in the right conditions .

Why Explosion-Proof Vacuums?

Grain dust is highly combustible and can create explosive conditions. Explosion-proof vacuums are designed to safely collect and contain this dust, preventing ignition and potential disasters. Explosion-proof vacuums are designed to safely collect and contain this dust, preventing ignition and potential disasters.

Key Features to Look For:

Certification: Ensure the vacuum is certified for use in hazardous locations (e.g., Class II Division 2, Class I, II Division 1 environments).
Safety Features: Look for features like grounding, static dissipation, and spark-free design.
HEPA Filtration: HEPA filters can trap extremely small particles, ensuring a clean environment.
Industrial Strength: These vacuums are designed for heavy-duty use and can handle large volumes of dust.

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Home > Resources > Case Study: NFPA 660 8 ft³ Rule

NFPA 660 8 ft³ Rule

For air-material separators handling combustible dust, a risk analysis should be provided to meet the goals of NFPA 660

NFPA 660 Standards on Explosion Prevention and Protection

The "dirty air volume" needs to be less than 8 cu ft

9.8.2.1 * Where an explosion hazard exists within any operating greater than 8 ft3 (0.2 m 3 ) of containing volume, the equipment shall be protected from the effects of an explosion.

XP Safe ORDLOC Dust Collector

XP Safe HAZLOC Dust Collector

Over 8 cu ft an XP vent is required

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Home > Resources > Case Study: Combustible Dust Vacuums

Vacuums for Combustible Dusts

Vacuums and Dust Collectors for NFPA compliance and for ease of use and productivity.

Learn about the OSHA and NFPA 660 requirements

“The Great Mill Disaster” of 1878

Organic dust explosions are not new. Following 'The Great Mill Disaster' of 1878, a catastrophic grain mill explosion at The Washburn Mill in Minneapolis, Minnesota, significant measures were taken to prevent similar incidents.

Flour dust was the cause of the explosion

Over the past 35 years, there have been more than 500 accidents, 675 injuries, and 180 deaths, all caused by one thing: flour dust, which is more explosive than gunpowder and 35 times more combustible than coal dust.

The effects of the explosion?

The explosion that destroyed Washburn A Mill, the world’s largest grain mill, along with several nearby mills, cut the city’s milling capacity by nearly half and claimed the lives of eighteen people. This incident, attributed to a buildup of grain dust, sparked extensive discussions and initiatives aimed at improving industrial safety and preventing the accumulation of combustible dust.

NFPA published it's first standard on combustible dust in 1923

NFPA published it's first standard on combustible dust in 1923. So this isn't a new problem. Companies have been reluctant to do anything due to perceived high costs. In almost every case it is a cost saving measure to address the hazard. We are happy to help you with the first steps.

Wet Dust Collection of Explosive Metal Powders

A wet dust collector, also known as a wet scrubber, uses water or another liquid to trap and remove dust particles from air streams, often preferred for applications involving potentially explosive or flammable materials.

Water is used to neutralize aluminum dust, where as neutralizing oil is used for titanium dust as water can be an accelerant in titanium fires.

What are some examples of explosive powders?

food (e.g., candy, sugar, spice, starch, flour, feed)
grain
tobacco
plastics, wood paper, pulp
rubber, pesticides
pharmaceuticals
dyes
coal
metals (e.g., aluminum, chromium, iron, magnesium, and zinc).

Understanding OSHA regulations on combustible dust

Currently, there are no OSHA mandates on Combustible Dusts; there are Standards that need to be followed. Even though NFPA 660 isn't a law, you can still be held accountable for safety violations.

What is a Dust Hazard Analysis (DHA)?

A Dust Hazard Analysis (DHA), as outlined by NFPA 660, is a systematic process for identifying and evaluating fire, flash fire, and explosion hazards associated with combustible dust and particulate solids in a facility, ultimately providing recommendations to manage these risks.

The new NFPA 660 will incorporate the following standards

NFPA 61
NFPA 484
NFPA 652
NFPA 654
NFPA 655
NFPA 664

Click HERE for more information

What is an Explosion Proof Vacuum?

An Explosion-Proof Vacuum System is a vacuum system capable of preventing the ignition of a specified gas or vapor and operates at such an external temperature that a surrounding flammable atmosphere will not be ignited. A Nationally Recognized Testing Lab (NRTL) must certify that a vacuum system is explosion-proof.

What is an Intrinsically Safe Vacuum Cleaner?

An Intrinsically Safe Vacuum is one that operates with no moving parts and no electrical parts. The power is supplied by compressed air that is fed into a tapered restriction also called a “venturi”. Intrinsically safe vacuums are made from non-sparking metals like stainless steel and aluminum. Mild steel is not suitable as it can create a spark when a nut or a screw is vacuumed. It will create a spark when it hits the wall of the vacuum dirt-bin.

Class II, Group E Aluminum and Titanium Dust Vacuuming

NFPA 660 Chapter 8 Combustible Metals. Portable Vacuum Cleaners. The use of portable vacuum cleaners shall comply with 22.8.4.2.2. (B)*Due to the inherent hazards associated with portable electric vacuum cleaning systems, the equipment used for cleaning shall be identified for use in Class II, Group E atmosphere.

Choosing the right vacuum or dust collector

We take several factors into consideration. From the bulk density of the product being vacuumed, the Kst and Pmax values, to the electrical requirements under NEC 70. Safety as well as productivity are taken equally into consideration.

Do I need an Explosion Proof Vacuum?

If your area is HAZLOC, then yes. If you area is ORDLOC and the Kst value of the powder is low, then an NFPA 660 Compliant Vacuum is required.

Vacuums made from non-sparking materials, motors located in the clean air stream, and critical filtration are built this way to ensure a safe and productive workplace.

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Home > Resources > Case Study: Static Resistant Hoses

Static Resistant Hoses and NFPA 660

Vacuum Hoses for use with Explosion-Proof Vacuums

Vacuum Hoses for HAZLOC

What Is Static Electricity?

Static electricity is a buildup of electric charges on objects. Charges build up when negative electrons are transferred from one object to another. The object that gives up electrons becomes positively charged, and the object that accepts the electrons becomes negatively charged. This can happen in several ways.

Static Conductive meaning:

Conductivity is a material's ability to allow electrical charges (electrons) to move through it.

Static Dissipative meaning:

"Static dissipative" refers to materials or objects that allow static electricity to flow slowly and in a controlled manner, preventing sudden, potentially damaging electrostatic discharges (ESD).

High Concentration of Conductive Resin in Hose Material

A vacuum hose whose only means of eliminating static is a copper ground wire running through the helix is considered static dissipating. Lower concentrations of conductive resin are also regarded as static dissipating.

A Conductive Hose has higher levels of conductive resin impregnated within the hose construction.

The conductive hose is better for fighting static than the hose with a ground wire, contrary to what many people believe. A hose's static conductivity is measured in units of "sheet resistance" or ohms squared. You should look at the surface resistivity levels, not whether it has a ground wire.

Conductive: when complete dissipation of static charges is required
Static dissipative: when a controlled discharge is needed

AATCC Test Method 76-2001

AATCC Test Method 76-2001, "Electrical Surface Resistivity of Fabrics," determines the electrical resistance of fabrics, which can influence electrostatic charge accumulation.

AATCC is the American Association of Textile Chemists and Colorists

Hose for HAZLOC Applications

Static Dissipative Hose

FDA Approved Static-Dissipative Hose impregnated with conductive resin to have a Surface Resistivity level: 10⁸-10¹⁰ Ohms/Square

Static Conductive Hose

Conductive Hose impregnated with higher concentrations of conductive resin to have a Surface Resistivity Level: 10³ - 10⁵ Ohms/Square

Dissipative Hose with Ground Wire

Surface Resistivity Level:10^{8 -}10¹⁰ Ohms/Square

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Home > Resources > Case Study: Hazardous Locations HAZLOC Explained

Hazardous Locations HAZLOC Explained

Areas are divided into Class 1 Class 2, and Class 3. There are two divisions within each area.

Class, Division, and Groups Explained

Class I

Class II

Class III

Division 1

All day production would usually be Div. 1.

Division II

Div. II Low Probability locations are usually defined as maintenance areas, or intermittent production.

HAZLOC Groups Explained

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Home > Resources > Case Study: Buying a Fully XP Vacuum Isn’t Always Necessary

Our EHS Says We Need a Fully Explosion-Proof Vacuum

Determining the right vacuum for your needs and compliance is a phone call away.

Vacuum and Dust Collection and NFPA 660 Compliance

We Will Recommend the Correct Machine for Safety and Productivity

The right tool for the job is crucial. Having a lengthy background in working with installations and repairs, I can speak with the Plant Manager or Maintenance Tech and speak their language.

When a purchaser calls, I always insist on speaking with these people to get to the bottom of the actual needs in terms of application and compliance with all regs.

The NFPA compliance, the bulk density of the material you are vacuuming, and other factors are all considered.

Solutions for HAZLOC

HAZLOC Areas Require Proper 3rd Party Certified Equipment. No Exceptions.

“Our company has done a DHA, and the dust has a Kst 300. Our area is a designated Hazardous Location. (HAZLOC). What are our options?”

You have only one option here, and that is to use an appropriately certified vacuum or dust collector for the area.

Solutions for ORDLOC

Our Company Has Done a DHA, and the Dust Has a KST of 98

“Our company has done a DHA, and the dust has a Kst of 98. Our area is an Ordinary Location. (ORDLOC).”

If the area is HAZLOC, then by all means, you can only use the appropriate vacuum with the correct markings and 3rd Party Certification. But if the area is ORDLOC and the dust is low Kst, then overspending on the wrong vacuum works against your needs. The fully XP vacuum can sometimes be less ergonomic and end up sitting in a closet. Purchasing a vacuum to check a box is the most common cause for this.

Finding the Correct Vacuum That is Compliant and Productive

You can often tell if an area is ORDLOC if you can bring in a cell phone or if ordinary light switches are present. The misconception is that getting a fully explosion-proof vacuum for low Kst dust in ORDLOC is a good return on your money. Very often, it is the worst thing you can do. A fully explosion-proof vacuum is for an NFPA HAZLOC area with airborne flammable vapors. But if you are vacuuming wood dust in a warehouse or a production area, this certification doesn't provide anything in return. In this scenario, purchasing full XP is a mere CYA exercise. A 120V NFPA 660 Safe Vacuum can give around 300 cfm from a 120V circuit, and it checks your safety and compliance boxes. The full explosion-proof 120V model costs double and only has ⅓ of the vacuuming power.

We Can Determine the Most Productive and Compliant Solution Within a Few Minutes

We are always available to chat. We do several teams chats everyday and we go over the small details to ensure that you are getting the correct solution. Please feel free to reach out anytime!

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Home > Resources > Case Study: Ceiling Collectors are unsafe for Titanium Dust

Conductive Dust Removal | NFPA 660

Immersion systems are designed to neutralize the metal dust by submerging it in a liquid bath.

Ceiling Dust Collectors are unsafe for Titanium Dust

Ceiling Mounted Ambient Dust Collection Units are not meant for xp metal dust

NFPA 660 - Definitions:

3.3.15.1* Combustible Metal Dust. A combustible metal dust particulate solid, including combustible fibers/flyings, that presents a fire, flash fire, or explosion hazard when suspended in air or the process-specific oxidizing medium over a range of concentrations. (CMD-CMM)

3.3.15.2* Combustible Metal Particulate. See 3.3.15.1

3.3.15.3* Metal Dust. Metal Particulate resulting from a solid state secondary processing operation. (CMD-CMM).

3.3.16* Combustible Particulate Solid. Any solid material composed of distinct particles, regardless of size, or handled in the facility, has the potential to produce combustible dust. (CMD-FUN)

The Hazardous Dust Still Passes Through Your Breathing Zone

Ambient-style dust collection can pose serious risks when it comes to handling titanium dust. A simple search on "titanium dust cloud in machine shops" reveals the critical nature of airborne titanium particles. These particles are highly pyrophoric, meaning they can ignite spontaneously upon contact with air, potentially leading to a powerful explosion triggered by even a minor spark or heat source, including static electricity. Therefore, stringent safety protocols are essential when dealing with titanium dust in a machine shop setting. Titanium can affect you when inhaled. Contact can irritate the skin and eyes. Inhaling Titanium can irritate the nose, throat, and lungs. Titanium powder is FLAMMABLE and SPONTANEOUSLY COMBUSTIBLE.

Titanium Dust - Health Hazard Information

Acute Health Effects The following acute (short-term) health effects may occur immediately or shortly after exposure to Titanium:
Contact can irritate the skin and eyes. Inhaling Titanium can irritate the nose, throat and lungs causing coughing, wheezing and/or shortness of breath.
Chronic Health Effects The following chronic (long-term) health effects can occur at some time after exposure to Titanium and can last for months or years:
Cancer Hazard According to the information presently available to the New Jersey Department of Health, Titanium has not been tested for its ability to cause cancer in animals.
Reproductive Hazard According to the information presently available to the New Jersey Department of Health, Titanium has not been tested for its ability to affect reproduction.

Titanium dust has a Kst value exceeding 300, far surpassing the explosivity level of polyurethane dust at 156 Kst. Despite these dangers, it's concerning to observe the use of ceiling-mounted Ambient Dust Collector systems in machine shops to manage titanium dust plumes. These installations are ill-suited for capturing explosive dust due to numerous inherent limitations.

Source-Capture Wet Collection is the Only Safe Means of Capture

Ducted custom Wet-Collector for evacuating titanium dust from a robotic cell.

We can guide you through the requirements of NFPA 660 (formerly 484) in finding the Dust Collection solution that is the most effective and productive. Conductive metal dusts are hazardous and they need expert analysis so that the correct solution is applied.

NFPA 660 Standard for Combustible Dusts and Particulate Solids

NFPA 660-Compliant Vacuums for ST1 Dusts in ORDLOC. 3rd Party Certified Explosion-Proof Vacuums for HAZLOC

Solutions for NFPA 660 Compliance

The new NFPA 660 will incorporate the following standards

NFPA 61: Standard for the Prevention of Fires and Dust Explosions in Agricultural and Feed Processing Facilities
NFPA 484: Standard for Combustible Metals.
NFPA 652: Standard for the Fundamental of Combustible Dust
NFPA 654: Standard for the Prevention of Fire and Dust Explosions from Manufacturing, Processing and Handling of Combustible Particulate Solids
NFPA 655: Standard for Prevention of Sulfur Fires and Explosions
NFPA 664: Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities

NFPA 660 FAQ

Does a vacuum need an NFPA 660 compliance cert for low Kst dust collection in ORDLOC?

According to NFPA 660 (page 660-35) it needs to meet the following best-practice build criteria:

8.4.2.2.1.7* For portable vacuum cleaners used with combustible dusts having a minimum ignition energy less than 30 mJ, the path to ground shall be verified prior to use after each movement or new connection, or both.

8.4.2.2.1.8* Portable vacuum cleaners that meet the following minimum requirements shall be permitted to be used to collect combustible particulate solids in unclassified locations:

(1) Materials of construction shall comply with 9.6.6.1.

(2) Hoses shall be conductive or static dissipative.

(3) All conductive and static dissipative components, including wands and attachments, shall be bonded and grounded.

(4) The fan or blower shall be on the clean side of the primary filtration media or wet separation chamber.

(5) The vacuum cleaner shall not be operated without filter media in place.

(6) Electrical motors shall not be located on the dirty side of the primary filtration media or wet separation chamber unless listed for Class II or Class III, Division 1, as appropriate, or Zone 20 or Zone 21 locations.

(7)* Where liquids or wet materials are picked up by the vacuum cleaner, paper filter elements shall not be used.

Why NFPA 660 vacuums are important

They help prevent explosions by removing combustible dust from the air
They help protect workers from the hazards of combustible dust
They help ensure that equipment is properly designed to handle combustible dust

NFPA 660 vacuum requirements

Vacuums used in hazardous locations must be listed for that environment
Vacuums used to collect combustible materials in unclassified locations must meet certain design requirements
They must be explosion-proof and properly grounded

Applications for NFPA 660 vacuums

Welding fume extraction
Wood dust collection
Exhaust extraction
Odor and gas extraction
Laboratory and electronics
Oil mist collection

What is an Explosion Proof Vacuum?

An Explosion-Proof Vacuum System is a vacuum system that is capable of preventing the ignition of a specified gas or vapor and operates at such an external temperature that a surrounding flammable atmosphere will not be ignited. A Nationally Recognized Testing Lab (NRTL) must certify that a vacuum system is explosion-proof.

Vacuums for XP Dust in ORDLOC

Static-Free Vacuums

Does a vacuum need an NFPA 660 compliance cert for low Kst dust collection in ORDLOC?

8.4.2.2.1.8* Portable vacuum cleaners that meet the following minimum requirements shall be permitted to be used to collect combustible particulate solids in unclassified locations:

(1) Materials of construction shall comply with 9.6.6.1.

(2) Hoses shall be conductive or static dissipative.

(3) All conductive and static dissipative components, including wands and attachments, shall be bonded and grounded.

(4) The fan or blower shall be on the clean side of the primary filtration media or wet separation chamber.

(5) The vacuum cleaner shall not be operated without filter media in place.

(7)* Where liquids or wet materials are picked up by the vacuum cleaner, paper filter elements shall not be used.

Vacuums for XP Dust in HAZLOC

3rd Party Certified Explosion Proof Vacuums

3rd Party Explosion Proof Vacuums for use in areas that are:

Div 1 - Groups D and in Class II -Div 1 - Groups F & G Hazardous Locations as defined in the National Electrical Code (NFPA 70). A certified Class II – Div 1 - Group E version is also available.

Class II, Group E Requirement for Vacuuming Aluminum Dust

Tiger-Vac® Class 1 Division 1 Vacuums

Do I need a Certified Vacuum for Small Quantities of Conductive Metal Dust in ORDLOC?

Yes. Regardless of whether ORDLOC or HAZLOC, NFPA 660 Chapter 8 Combustible Metals states the following:

NFPA 660 Portable Vacuum Cleaners - Explosive Metal Dusts:

“The use of portable vacuum cleaners shall comply with 22.8.4.2.2. (B)*Due to the inherent hazards associated with portable electric vacuum cleaning systems, the equipment used for cleaning shall be identified for use in Class II, Group E atmosphere.”

We recommend Tiger-Vac® EXP1-5 (4W) RE HEPA and EXP1-20L (DT) RE HEPA (MFS) for residual cleanup of metal powders in ORDLOC and HAZLOC within NFPA stated volumes.

Air Operated Vacuums and NFPA 660

Depureco AC 100 Z22 Air-Powered

NFPA 660 Chapter 8, 660-35

8.4.2.2.1.9 Portable air-operated vacuum cleaners that meet the following minimum requirements shall be permitted to be used to collect combustible particulate solids in electrically hazardous (classified) area, provided the following are met:

(1) Materials of construction comply with 9.6.6.1.

(2) Hoses are conductive or static dissipative

(3) All conductive or static dissipative components, including wands and attachments, are bonded and grounded.

(4) Where liquids or wet materials are picked up by the vacuum cleaner, paper filter elements are not used.

(5)* The design of the vacuum cleaner is suitable for use in a hazardous (classified) location.

8.4.2.2.1.10* In combustible dust hazardous (classified) locations, vacuum cleaners shall be listed for combustible dust (hazardous) locations.

What is an Intrinsically Safe Vacuum Cleaner?

An Intrinsically Safe Vacuum is one that operates with no moving parts and no electrical parts. The power is supplied by compressed air that is fed into a tapered restriction, also called a “venturi”. Intrinsically safe vacuums are made from non-sparking metals like stainless steel and aluminum. Mild steel is not suitable as it can create a spark when a nut or a screw is vacuumed. It will create a spark when it hits the wall of the vacuum dirt-bin.

Click HERE for more information on our Intrinsically Safe Air Powered Vacuums

Dust Collectors ORDLOC

Designed for hands-free operation making it ideal for production and robotic cell use. Highly portable and ergonomic XP dust collector for collection of ST1 XP Dust for batching and pouring. Built in Italy, cleverly designed, small footprint, and very easy to maintain. Parts and filters are always on hand. Portable units and arms are usually in stock for immediate shipment.

3rd Party Certified Explosion-Proof Dust Collector for HAZLOC | Stainless Steel

Tiger-Vac® CD-600EX and CD-1200EX

3rd party certified for use in NFPA classified zones | HAZLOC.

The 600 and 1200 CFM portable dust collectors are fully certified explosion proof for use in hazardous locations as designated by NFPA recommended guidelines and implemented by NRTL.

NFPA 660 and Vacuum Hose & Accessories

Vacuum Hoses

Grounded NFPA 660 Hose

Per NFPA 660: “All conductive or static dissipative components, including wands and attachments, are bonded and grounded”.

Our range of industrial vacuum hoses includes static-resistant hoses that are Ideal for use with Explosion-Proof Vacuums in NFPA Class I, Div 1, Group D and Class II, Div 1, Groups E, F, and G environments.

Click HERE for more information.

Vacuum Accessories for use in NFPA Class I and II - Div. 1 and 2.

Per NFPA 660: “All conductive or static dissipative components, including wands and attachments, are bonded and grounded”.

Our vacuum tools are impregnated with conductive resins to automatically dissipate static before it happens. .

Ideal for use with Explosion-Proof Vacuums in NFPA Class I, Div 1, Group D and Class II, Div 1, Groups E, F, and G environments.

Click HERE to see our vacuum Tools and Accessories Brochure

Grounding Reels for HAZLOC Dust Collection

Grounding Reels for HAZLOC Dust Collection

In applications where airborne flammable vapors and highly explosive dusts exist, the addition of a retractable grounding reel provides an additional layer of protection.

Per NFPA 660: “All conductive or static dissipative components, including wands and attachments, are bonded and grounded”.

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Accessories for all kinds of applications

Home > Resources > Case Study: Industrial Pneumatic Vacuums

Industrial Pneumatic Vacuum Cleaners

Air Powered Industrial Vacuums that have no moving parts and no electrical parts. Non-sparking and dissipative construction. FDA Approved materials.

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Home > Resources > Case Study: Downdraft for Hot Metalwork

Downdraft Bench for Hot Metalwork

The HD Smoke-Cart is an ideal solution for all day grinding. It's unique design is able to keep up with heavy sparks.

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Home > Resources > Case Study: Exhaust HEPA and Carbon Plenums

Bolt-on Plenum for Odor and Toxic Dust

A bolt-on plenum can be added for trapping of VOC and hexavalent chromium

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Dust Collector for Granite and Silica

Cabinet-Style Dust Collector for multiple operators producing dust at one time.

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Home > Resources > Case Study: Backdraft Collector for VOC Filtration

Backdraft VOC Filtration

Designed to safely capture flammable paint vapors and other fumes that need special filtration

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Dust Collector for Odor and Sticky Fume

For plastic and paint odor source elimination by arm capture and carbon scrubbing of odors

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Thermal Cutting Dust Collector

Plug-and-Play dust collector for thermal cut applications

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Home > Resources > Case Study: Filtering Odor from Plastic Powders

Heavy Odors from Powders Containing WALOCEL™

Capturing powders containing WALOCEL™ MW 15000 PFV Methyl Hydroxyethyl Cellulose at the source

Capturing VOC from the Source by Scrubbing with Carbon

The Challenge

A major plastics manufacturer experienced heavy odors from mixing powders containing WALOCEL™ MW 15000 PFV Methyl Hydroxyethyl Cellulose.

The Solution

Our team suggested the PDB-VOC source capture collector. The dual 4" ducting collar version allows our client to connect static-dissipative flex ducts directly to the dual 4" pickup points on the mixer, ensuring a completely sealed source capture.

Our experiments demonstrated that the most effective results were obtained when a combination of 4mm potassium permanganate pellets and 4mm activated carbon was used. The PDB-VOC Collector accommodates up to three 24x24x3" carbon cells, each capable of holding 28 lbs. of absorption media. This arrangement ensures thorough capture of the targeted powders, significantly enhancing the company's operational efficiency.

The plant manager expressed great satisfaction with the PDB-VOC Collector, noting its effectiveness in improving their processes, which led to the recent purchase of a second unit.

Explosion-Proof Motor and NEMA 7/9 Starter are Available

Welding Fumes Torch Extractor

The XM Torch provides automatic suction of fumes from the torch as soon as you start welding.

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Home > Resources > Case Study: Industrial Vacuum Cleaner for Ovens and Bakeries

Home > Resources > Case Study: Vacuums for Hot Ash

Hot residues from ovens and industrial bakeries

Industrial vacuums with high temperature components for safe and sanitary cleaning of ovens and food preparation areas.

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Home > Resources > Case Study: Dustless Floor Sanding

Floor Sanding HEPA Vacuums

Range of HEPA industrial vacuums equipped with Longopac collection bag, ideal to safely collect any kind of very fine and toxic dust.

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Home > Resources > Case Study: HEC Separators | Direct Bagging

Cyclone Material Separators

Pre-Separators can be used in all applications where the extracted material is coarse or voluminous.

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Food and Pharma Continuous Vacuums

Compact industrial vacuums for scraps and fibrous trim created during manufacturing and packaging

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Continuous Vacuum Cleaners NFPA 660

Vacuums for All-Day Running with Side-Channel Regenerative Motor and Blower

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High Power Industrial Vacuums

High Powered HEPA Industrial Vacuums for Steel Mills and Mines.

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