Filtration Systems Keeping Airline Passengers Safe
Air Filtration / Bleed Air Valves
Today’s commercial jetliners carry more passengers and fly farther than ever before. Passengers and crews flying at high altitudes breathe recirculated, pressurized air – sometimes for many hours – that may contain irritating gaseous elements including fuel byproducts, bio-effluents, cleaning agents, odors and ozone. Airborne particulates – dust sand, aerosol lubricants and even allergens, fungi, bacteria and viruses – also affect air quality that in turn may cause poor cabin air quality and affect passenger flight experience. The flying public is increasingly interested in air quality during commercial flights because clean air improves the passenger’s in-flight experience.
Our systems improve air quality in crew and aircraft cabins, while protecting people and equipment from particulate and chemical contaminants. Critical electronics, avionics and environmental control systems need clean air in order to operate effectively. We provide a range of advanced filtration solutions that protect critical electronic, avionics equipment and in-flight entertainment systems.
Today, PTI Technologies offers a complete line of HEPA Cabin Air filters which prevents bacterial growth and can extend service life. These filters remove both small (smoke, atmospheric dust, virus and bacteria) and large particles (lint and pollen) and are certified for use on Boeing 737, 747, 757, 767, 777; Airbus A318, A319, A320, A321, A330, A340; Embraer ERJ 170/190 series and the Bombardier CRJ 700/900 series aircraft. While standard HEPA media typically have a particulate efficiency of 99.97% at 0.3 micron particles, PTI’s CabinSafe™ media has demonstrated an efficiency of greater than 99.999%. This improved efficiency provides excellent protection from bacteria and flu viruses such as H1N1 and SARS. The patented antimicrobial agents used on our filters have been found to preserve the life of the filter media by reducing microbial colonization, therefore increasing the value and performance. PTI’s proprietary CabinSafe™ antimicrobial agent is incorporated as a microstructural film and as such is integral to the part with no effect on filtration efficacy. This agent additionally helps inhibit the growth of mold and mildew on the filter media. Our CabinSafe™ filters provide a safer and healthier cabin environment allowing passengers and crew to feel more comfortable. CabinSafe™ filters are available now and can be found in-service with a number of airlines.
PTI Technologies is now advancing this technology even further with the development of special sorbents combined with HEPA to enhance the Cabin Air filter performances. The surface area of the sorbent allows even more contaminants to adhere or be absorbed by the filter media increasing the performance of the filter, and leveraging the properties of the sorbent to remove a broader range of gases and other airborne materials. This higher absorption technology is the future of Cabin Air filtration targeting the removal of Volatile Organic Compounds (VOC) and other offensive odors from the air within the aircraft. PTI carbon impregnated filter media tested by an independent lab shows that it meets ISO 11155-2 and EN 4618:2009 procedures and successfully removes toluene, butane and Sulphur dioxide gases with 99.5% efficiency.
PTI Technologies also offers a line of multifunction Bleed Air Valves in a small compact package. The most common configuration utilizes one inlet port and two discharge ports. The valve modulates high temperature aircraft gas turbine airflow to both ports through one flow passage. The amount of airflow is controlled with a mechanical input to the valve cam. The cam profile can be varied to obtain the desired engine flow conditions. Since the valve is solenoid operated, you can switch it between Anti-Icing mode to Bleed Air mode—or, shut off flow entirely based on the cam position. The latest version of this valve integrated with a dual coil solenoid for electrical redundancy.