In an industrial setting, clean air is essential for protection of electronic equipment and circuits, electrical equipment such as contact points in switchgear and circuit breakers, and other sensitive equipment subject to corrosion.

Marc designs and manufactures gas-phase air filtration systems, sometimes referred to as chemical air filtration, to eliminate odors, hydrocarbons and corrosive gases such as H2S, SO2 and others for virtually any ISA classification.

Gas-phase filtration systems are classified as “cell” systems for lighter gas concentrations, and “deep bed” systems for heavier concentrations.   Each system contains pre- and post particulate filters and various bed depths of media such as potassium permanganate spheres (KMnO4), virgin or activated carbon granules, or a combination of these.

Cooling and heating coils can be incorporated into the systems as well as redundant blowers, HEPA and ULPA particulate filtration, and other features. Systems can be designed to provide type X, Y, or Z pressurization.

The VPAX series is specifically designed to provide a safe, clean indoor environment for RIE and similar buildings containing computers and other sensitive electronics.  Featuring twin removable heating and cooling units for full redundancy, the VPAX incorporates cooling, heating, and dual pressurization with gas-phase air filtration into a single system.   The system provides Class I, Division 2 hazardous location positive pressurization to prevent infiltration of hazardous and corrosive gasses and reduce the classification inside the building to an ordinary (non-hazardous) location.  The VPAX is designed to allow for easy installation and maintenance. The complete assembly is designed for installation on the exterior of the building.   Only the control section with supply and return air openings penetrates the building making for a minimal wall cutout.  More information on this unit can be found under "Combination A/C & Pressurization".

The DCPX-CF series is a single packaged, fully redundant cooling, heating, pressurizing and purge system while incorporating a deep bed scrubber for gas-phase air filtration into its design. The unit includes particulate pre-filters, a carbon or potassium permanganate media bed, re-filters, and final HEPA filters to remove corrosive gasses and other pollutants.  The system also provides positive pressurization to prevent infiltration ofhazardous and corrosive gasses and reduce the classification inside the building to an ordinary (non-hazardous) location.

The CFSX series is a gas-phase air filtration unit incorporating one or two blowers and designed to reduce contaminants and improve indoor air quality by continuous recirculation of the indoor air.  Optional features include a fresh air inlet to provide a slight positive pressure inside the closed space.  In this case, the outdoor air mixes with the recirculated air as it passes through the filtration system.  This series can be equipped to provide NFPA 496 pressurization complete with a remote control panel.

The CFU series is a gas-phase air filtration cabinet incorporating chemical media cells with prefilter and final filter and normally without a blower.  The unit is usually positioned next to one air conditioner or between two air conditioners to filter the outdoor air make-up.  This unit depends upon the air conditioner blower to pull air from the outdoor air inlet and through the filtration system.  Systems can be designed with a blower incorporated into the cabinet so as to deliver the make-up air to the air conditioner(s).

The DBS series deep bed scrubber is designed to remove larger amounts of air contaminants and with greater air flows.  Incorporated into the designed is one or two deep bed hoppers for media bed depths of between 6" and 12" each.  Also included are prefilters, final filters, one or two blowers, duct connections, and a fresh air inlet hood or stack connection.  This unit is normally free-standing and requires supply and return air ducts to and from the room.  The unit can be equipped with cooling coils and can be set up for NFPA 496 pressurization.       

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Gas phase air filtration, chemical air filtration, deep bed scrubbers, pressurization units, explosion proof air conditioners, explosion proof air conditioning, explosion proof HVAC, explosion proof heaters, pressurizing units, explosion proof fans, ventilation fans and other equipment for hazardous locations in petrochemical, refining and offshore industries.