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Applications Limited Only by Your Imagination
Porous metal media is a unique material that exhibits a wide range of definable flow and filtration properties. It is a true engineering media from which design engineers can develop any number of unique product solutions. Applied Porous Technologies, Inc. supports equipment manufacturers, end users, resellers, and research organizations.

The unique combination of a sintered powdered metal construction offered in a variety of corrosion-resistant materials such as 316LSS also offers some strong benefits over other porous media technologies. In many applications, our media functions as a cost-effective, direct replacement for brass and bronze powdered metal media, providing a stronger and more corrosion-resistant option. In some applications such as in medical components and semiconductor products, 316LSS is also a more generally accepted material. In filter applications, porous metal media can replace woven screen products, for a more rigid structure that will withstand higher pressure and allow backflushing without the need for additional internal support structures. Our media has also been used successfully as a replacement for ceramic media, providing corrosion- and temperature-resistant operation while eliminating the cracking and breaking issues often associated with ceramics.

Some of our typical applications include:
Filtration
Flow Control Devices, Breathers, and Pressure Equalizers
Flame Arrestors
Spargers
Rollers and Applicators
Fluidizers
Gauge Snubbers
Silencers
Applications include filtration, flow control devices, breathers, etc.

Filtration
This is the most obvious use for any porous material. Applied Porous Technologies, Inc. media, components, and assemblies are used in a wide assortment of filtration devices for filtering of both gasses and liquids. High mechanical strength and corrosion-resistance make this media well-suited for aggressive environments and will offer such benefits as long life and cleanability. Some existing applications include:
Solvent filters for chromatography systems
Polymer filters for processing molten plastic materials
Catalyst recovery filters in petrochemical plants and food and beverage applications
Gas filters for chemical processing and semiconductor manufacturing applications
Sensor covers to protect delicate instruments in harsh environments (such as smoke stacks and exhaust pipes)
Line filters for chemical analyzers
Syringe filters

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Flow Control Devices, Breathers, and Pressure Equalizers
Applied Porous Technologies, Inc. media is available with very specific and controllable flow characteristics that can be incorporated into devices to control the flow of gases or liquids in and out of a process. Some examples of these devices in use include:
Small fitting-mounted flow restrictors that replace expensive micro valves and orifice devices used in gas leak detectors in the mining industry or in other analytical equipment
Vent plugs that allow internal pressure of systems to come to equilibrium with outer atmospheres such as in space vehicles, automotive (truck and train) brake systems, and instrument cabinets used in harsh environments
Vacuum delay valves in automotive carburetors
Pump priming vents for pharmaceutical micropumps

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Flame Arrestors
Applied Porous Technologies, Inc. porous metal media can be produced to allow free flow of gases but to not permit flames, sparks, or other ignition sources to pass through the porous structure. This somewhat unique property makes the media an excellent material for use in flame arrestor devices.
Gas detectors for mining operations
Oxygen sensor covers in turbine and jet engine inlet cones
Protective covers for electronic process sensors

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Spargers
The media can be used in devices to introduce a gas into a liquid. Gas passing through the porous media into the liquid is transformed into many small bubbles that result in a ratio that maximizes the liquid's gas absorption. Sample applications include:
Carbonation of beverages
Addition of CO2 to neutralize acidic waste stream in paper processing
Aeration of sewage effluent to increase biological activity
Addition of air into fermentation processes such as beer brewing or fuel ethanol production
Introducing hydrogen into refinery cracking operations
Increasing the oxygen content in fish farming plants
Adding ozone to a water treatment stream
Introducing nitrogen into food products such as beverages and cooking oils to remove oxygen and extend shelf life

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Rollers and Applicators
Uniform porosity makes the media an excellent material for use in applicators and roll-handling equipment. Materials such as inks and coatings can be pumped through the porous media and efficiently pressed or rolled onto a substrate. Some applications include:
Finish coatings for printing papers
Solvent-based adhesive coating of tapes
Ink jet printer plates
Air rollers for handling sensitive films with no direct surface-to-surface contact

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Fluidizers
Air or nitrogen gas passing through the media can cause a dry material, such as a powder, to move with properties similar to a liquid. This enhances the flow characteristic of the material and aids in both transporting and processing.
Fluidizing cones on silo outlets to aid dry process chemical flow into a reactor
Moving dry goods, such as cereals, through process tubing
Loosening of bulk dry chemicals after transport prior to dumping

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Gauge Snubbers
Gauge Snubbers are porous metal discs placed between a process line and a pressure gauge or delicate sensor. These provide a dampening effect that absorbs the effects of pressure spikes and protects sensitive devices.

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Silencers
Exhaust ports on compressors, gas cylinders, and valves can create dangerous noise levels. Porous metal silencers muffle the noise while allowing free flow of the escaping gases. Sample applications include:
Vehicle or train air brakes
Gas-activated process valves in chemical plants
Air and vacuum pump discharge mufflers

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Applied Porous Technologies, Inc.
2 Tunxis Road, P.O. Box 569, Tariffville, CT 06081
860-408-9793 • Fax: 860-651-6749
email: info@appliedporous.com