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Specialized & Custom Applications

Pipe Welding

Welding in confined spaces is difficult. When combined with potentially high levels of built up fumes, it can often be very difficult for a welder to see and breathe in these areas. Our solution to this problem are our python fume extractors with long flex hoses ranging from 12 to 24 feet; giving the welder a source capture system inside pipes or other confined spaces. In addition, these compact units are able to fit into most spaces. We offer several different air flow power settings of this unit ranging from approximately 80 CFM up to 950 CFM.

Rope Cutting

Hot knives are used for a variety of applications. One example is nylon rope cutting, commonly found in the maritime industry. When these hot knives are used to cut rope, smoke and fumes are typically released resulting in unpleasant odors caused by melting rope. This Model 300 fume extractor is mounted beneath a workbench where a 4” diameter opening on the work surface accommodates the inlet of the fume extractor. As the operator cuts the rope above the opening, the negative-pressure fan pulls the smoke away from the operator’s breathing zone and into the filtration system. The Model 300 is capable of air volume up to 350 CFM. This configuration may also work for small-scale and relatively stationary foam-cutting operations.

Jet Fuel

We provide air filtration for jet fuel “Av gas” testing. The aviation industry is stringent about the fuel that goes into flying machines and has very strict standards and requirements on fuel purity, composition, among a few other quality metrics. This application entails sampling a batch of jet fuel to test for purity. When the operators are taking samples they are exposed to a high level of chemical fumes; many of which can be potentially harmful. Our ductless fume hoods and table top Winged Sentry are among our best sellers for this market. In addition, our portable units SS-300-PFS and SS-400-PFS are also very popular as they offer portable options for those that require mobility in their facility.

Instrument Finishing

When finishing or re-finishing musical instruments, many epoxies, lacquers and adhesives are used which emit fumes. These fumes may cause negative health effects when inhaled. Our solution to reducing operator exposure is this custom ductless fume hood with multiple shelves. Equipped with two Model 400 portable fume extractors with python style extraction arms mounted to the outlets in the lid, this hood uses 1400 CFM to pull harmful fumes away from the operator's breathing zone. Both Model 400s utilize custom carbon blended filters to adsorb the fumes before recirculating the filtered air back into the room. The shelves act as cubbies for the various pieces of the instrument and create an accessible workspace for the operator.

Chocolate Spray Finishing

Many chocolatiers, bakers and culinary artists create edible sculptures that may require a decorative finishing spray of chocolate. This chocolate is applied through a pressurized air nozzle, resulting in ambient mist. If not captured, this mist tends to adhere to surrounding surfaces and may even clog the nozzle. Sentry Air Systems designed this custom capture hood for a luxury hotel that was experiencing ambient chocolate mist as a result of their spray application. The hood utilizes two Model 400 units, custom-mounted atop a capture hood with clear anti-static vinyl strip curtains on the left and right side. The open-front design gives the operator ample work space while the curtains act as a barrier while the dual fans capture any chocolate overspray.

Asbestos Sampling

Asbestos is well recognized as a health hazard and its use is now highly regulated by both OSHA and EPA. In the past, asbestos was commonly used in a variety of products and materials including thermal insulation, fire proofing, electrical insulation, building materials and brake linings. Sampling these materials for asbestos before work begins helps prevent potential exposure. This Model 200 Winged Sentry benchtop fume extractor with lid offers a unique design and horizontal airflow pattern. It features infinitely adjustable “wing flaps” and a clear acrylic hinged lid to assist in directing fumes into the unit’s inlet and filter chamber while the operator works between the wings. This unit has been customized to fit a microscope for asbestos sampling. The opening in the lid allows the lens of the microscope to be accessed by the operator while the sample remains inside the confines of the wings.

Sink Cutout

This application called for a sink cutout in the center of the hood. The customer needed to use this in a wet lab that already had an existing sink in place. We were able to design the hood to enclose the sink and fit perfectly onto their existing countertop. Our design process includes custom drawing fabrications with very specific dimensions to help the customer determine precise locations.

Rock Lab

This exhaust hood was custom designed for a rock lab. The objective was to give the customer maximum access to the front of the hood. No application was the same at this laboratory. They needed to have coverage, however, when loading core samples into the hood the operators needed extensive flexibility. In addition to the access area being modified, the interior height of the hood was expanded by an additional 10 inches (total 34-inch interior dimension), and a secondary 6-inch diameter exhaust collar was added for maximum airflow inside the cabinet.

Multiple User

This configuration of ESD-safe fume extractor arms combined with a powerful Model 450 filter/fan unit was capable of having up to 10 operators solder at the same time. The system was implemented at an air conditioning training school where students learned to solder several hours per day. Our designed saved them time and money by not having to exhaust all of the stations outside, and significantly reduced maintenance costs by only having one central station to service.

Custom Access Opening

This unique hood had a trapezoid shaped cutout designed so the customer could bring in odd shaped pieces of equipment in and out of the hood easier without always having to open the front hinged lid. In addition, we added a shelf in the back of the hood allowing them to conveniently place necessary equipment for their application.

Horizontal Side Flow

This hybrid hood had extensive design and engineering detail put into it. The customer had very specific requirements and constraints during the design stage. We were able to adhere to their requirements and design and build the hood to their exact vision. It combines a horizontal side laminar flow insert that leads to a 6-inch diameter exhaust port where scrubbed fumes would vent out of the building. The clear front lid magnetically sealed across the entire front of the hood. We were able to create an “air intake” on the left hand side of the hood with air slots cut into the hood.