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For over 90 years, the A.T. Villa name has been associated with quality and design excellence. Our comprehensive fume hood offerings are a proud example of our reputation. Our fume hoods offer a wide variety of enclosure types for every laboratory application.
Safety is our number one concern when it comes to fume hoods. Our fume hoods are factory tested in accordance to the latest ASHRAE 110 test standards, recognized by SEFA and the American Conference of Governmental Industrial Hygienists.
Chemical fume hoods play a vital role in containing or removing hazardous fumes, vapors or radioactive materials from a lab setting. Fume hood technology has continuously improved for more than 50 years to enhance safety, efficiency and ease of use.
Properly installed and certified hoods allow laboratory personnel to work with harmful materials at close range, safely and conveniently.
Your choice of hood design and model depends heavily on your application.
A.T. Villa early wood frame fume hood from the 1950's, Milan, Italy. No longer in production....as strange as it may seem, we don't get many requests for these anymore.
Bypass Fume Hoods: Airfoil bypass fume hood models reduce turbulence of airflow through the unit, improving efficiency and performance.
Add-Air Fume Hoods: “Add air” fume hoods use a plenum to provide the majority of outside air required by the hood in a uniform, regulated supply.
ADA Fume Hoods: Provides all the features and capabilities of our standard Fume Hood line with special accommodations built in to meet the specific requirements needed to provide a safe work site for wheelchair operators
Perchloric Acid Fume Hoods: Highly-corrosive perchloric acid is stronger than sulfuric acid and poses an explosion risk in labs. Perchloric acid fume hoods are designed to not react with this volatile inorganic acid.
Variable Air Volume Fume Hoods: Variable air volume hoods are alternatively known as “constant air velocity hoods.” VAV hoods adjust air volume based on sash position, maintaining a constant flow velocity.
High Performance Fume Hoods: Designed to provide maximum personal protection at an economical operating cost. Operating at an exhaust volume of less than half of a conventional hood.
Radio Isotope Fume Hoods: Fume hoods designed for handling radioactive materials isolate radiation from users and from the environment. Radioisotope hoods are single-purpose and should not be used in any other application. Low Bench Fume Hoods: These hoods are designed for low benches, allowing ventilation of large equipment or other oversized objects.
Walk-In Fume Hoods: Walk-in hoods reach completely or nearly-completely to the floor, allowing you to set up or manipulate large equipment inside the hood (while venting is disengaged).
Typically your lab planners will assist with the types of Fume Hood requirements for your laboratory. Below is a very basic overview to provide insight on the selection process.
There are two main factors to consider when selecting a Fume Hood style.
First consider the type of work being performed in the Hood. The use of perchloric acid or radioactive materials require a Fume Hood specifically designed for these materials. Large apparatus or complex set-ups may require the use of a low bench or walk-in Fume Hood to accommodate the space requirements.
The second consideration in selecting a Fume Hood style is the air consumption of the hood. Operation of a Fume Hood requires a relatively large volume of room air.
If you determine that the amount of air being supplied to the room is adequate to accommodate the exhaust volume of the Fume Hood the ByPass style Fume Hood would be an excellent choice.
If there is not enough supply air available, the Add Air style may be the right choice.
The Variable Air Volume style Fume Hood is designed to be used with an adjustable damper system in the ductwork. The use of this Hood will, when used in conjunction with a VAV control system, drastically reduce the total amount of air consumed. This makes the Variable Air Volume style Hood a good choice when trying to reduce air consumption for energy cost savings or when there simply is not enough available supply air.
Most of our Fume Hoods come in widths of 48", 60", 72", 84" & 96".
Fume Hoods can be order standard as a hood only or with standard laboratory casework below. 48" & 60" widths come with a single cabinet and 72", 84" & 96" come with two cabinets. It is very common to also use casework designed for acid/corrosives and flammable storage.
The options available for outfitting your hood are vast. You may specify the work surface type with options for sink cups. All types of gas valves both local and remote are available as well as options for power, lighting, apparatus and air flow controls.
Custom hood sizes and materials are available. Talk to our chemical fume hood sales team for detailed options.
Airfoil Bypass Hoods
The Airfoil Bypass Hoods have a double bypass to provide constant exhaust volume and limit changes in face velocity. The upper bypass functions automatically with the raising and lowering of the sash. The lower bypass provides a continuous air sweep of the work surface. When hood top enclosures are used, a bypass grille must be specified.
Airfoil Add Air Hoods
The Add Air Hoods provide up to 70% of the Hood exhaust requirements. With a bypass similar to the Airfoil Bypass Hood, outside air is introduced through the add air plenum, thus minimizing the amount of conditioned room air required. When outside temperatures are extreme, it may be necessary to temper the incoming air.
Airfoil Variable Air Volume Hoods
The Variable Air Volume (VAV) Hoods are designed to be used with exhaust control systems provided by other manufacturers. In lieu of an upper bypass the VAV Hood has a lintel which restricts the air intake of the Hood to the sash opening and lower bypass. The commercially available exhaust control system will detect the movement of the sash and adjust the volume of air required to maintain a constant face velocity. Factory mounting of the exhaust controls is available when specified.
Our airfoil bypass fume hoods provide continuous flow of air to your laboratory. Along with keeping unwanted emissions at bay, our fume hoods last for years of continual use. You’ll have a reliable fume hood you can depend on.
Airfoil Bypass Fume Hood Specs.
Variable Air Volume fume hoods are essential for saving money and energy in research labs and academic facilities. Since the sash can be partially closed to reduce air flow, VAV fume hoods are more energy efficient than many other hood types.
Variable Air Volume Fume Hood Specs.
Unlike other chemical fume hoods on the market, this product uses a plenum to regulate the stream of outside air in an isolated space. This provides better ventilation for laboratories, classrooms, and research facilities.
Add Air Fume Hood Specs.
Designed to provide maximum personal protection at an economical operating cost. Operating at an exhaust volume of less than half of a conventional hood, the High Performance Fume Hood not only saves money by reducing the volume of air that needs to be conditioned and exhausted, it reduces the size of the HVAC equipment saving on the original capitol investment.
High Performance Fume Hood Specs.
Stainless steel lining and work surface with coved corners that facilitate thorough cleaning and a reinforced countertop to support lead bricks, are some of the features incorporated into the Radio Isotope Hood. These features will help to insure operator safety and convenience in procedures that involve the use and handling of radioactive materials.
Equipped with a type 304 stainless steel sash frame with a full width flush pull and is glazed with 7/32" thick laminated safety glass. A counterweight provides for one finger operation of the sash at any position. A lower stainless steel airfoil acts as a sash stop to maintain a 1" space, below the closed sash, which allows air to continuously flow across the work surface.
This Fume Hood is specifically designed for the use of perchloric acid. A coved stainless steel liner with integral work surface, an internal water wash down system and water collection trough provide for detailed cleaning of the Hood interior. In addition, the interior baffles are also removable for cleaning to prevent the dangerous build-up of perchlorates.
The Perchloric Acid Fume Hood has an internal bypass located above the sash. The bypass operates automatically, opening when the sash is closed and closing as the sash is raised. The bypass provides for a relatively constant face velocity at any sash position.
Large appratus or complex set-ups may require the use of a Fume Hood specifically designed to meet these requirements. The Low Bench Fume Hood is supported by an 18" high table and has an interior height of 63 3/4". The Walk-In Fume Hood has two vertical rising sash that allow you to roll in large equipment or portable work stations.
The Low Bench Fume Hood has a four panel horizontal sliding sash. Each panel is a 7/32" thick laminated safety glass and is trimmed on the edges with stainless steel “U” channel.
The Walk-In Fume Hood is equipped with two independently operating, full view, vertical rising sash. Each sash is glazed with 7/32" laminated safety glass and is counterweighted for one finger operation of any position.
Both Low Bench and Walk-In Hoods are framed with inward angled members to minimize turbulence and provide smooth movement of air into the Hood. The lower airfoil on the Low Bench Hood maintains a 1" space, below the horizontal sliding sash panels, which allows air to flow continuously across the work surface of the Hood.
Low Bench and Walk-In Hoods have a double wall construction that allows for easy installation of service fix-tures and routing of interior plumbing and electrical lines. The Hood interior is white “Resin-Chem” and has remov-able interior access panels on both sides.