AAF’s retrofit S-Trap air filter

Lightweight construction, self-cleaning with high filtration performance and low-pressure drop

AAF’s Retro-fit S-Trap air filter

AAF (American Air Filter), a Daikin group company, clean air solutions provider has brought S-Trap, a bolt-on prefilter for air handling units, engines, and other machinery for areas with sand or dust storms or with exposure to heavy dust loads. S-Trap has a smart design to optimize the space, weight, and installation to the existing AHUs and increase the life of next stage filters.

Dust storms arise when a gust front or other strong wind blows loose sand and dirt from a dry surface. Dust storms are made up of a multitude of very fine particles, which are between 0.08milimeter and 1milimeter, which also means 0.0032 and 0.04 inches in size.

The S-Trap filter removes airborne particles by inertial separation and is normally self-cleaning. HVAC systems for industrial applications that face shutdowns due to severe dust storms can save on their energy cost by protecting their air handling units by installing inertial filters, AAF S-Trap.

According to the company press statement, it maintains very high efficiency at operating points that considers pressure loss capabilities of existing Air Handling Units and is, therefore, suitable for retrofit situations. S-Trap is built to withstand harsh environments. It is rust-free, self-cleaning, rigid design for stiff stacking, and equipped with long-lasting materials.

Advantages of S-Trap

• S-Trap Lite is an ideal fit for retrofit jobs, replacing a dated unit or adding in the existing set-up.

• Offers a lesser pressure drop for the given airflow can help the designer to optimize fan selection. Cost-saving of up to 16% on power consumption.

• Saves space by reducing the overall length of air-handler up to 550 millimeter.

• Convenience to ship, unload and assemble

S-Trap is available in 2 versions

1. S-Trap L (STL)

a. It is optimized for buildings with limited space and access.

b. The construction is lightweight to have a minimum load on the building structure.

c. It will be produced from galvanized steel sheet metal or stainless steel

2. S-Trap HD (STHD)

a. Fully welded design and is mainly meant for new projects/for retrofit in case space is not a constraint

b. STHD casing and other critical parts are made from thicker 3mm steel and welded together to ensure durability, vibration resistance, and support during harsh conditions.

c. It will be produced from mild steel or stainless steel

American Air Filter (AAF) provides clean air solutions for all buildings, including malls, office spaces, universities and schools, hospitals, and for any and every space that requires clean indoor air.


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