HVAC Silencers
IAC America
offers the broadest range of silencers/louvers in the industry. All of IAC’s
silencers were developed in response to specific requirements from acoustical
consultants, consulting engineers, owners, and contractors. Having been
pre-tested for performance, they provide the most economical choices for
solving the wide variety of noise control problems encountered in HVAC
engineering.
Silencer Applications:
- Quiet-Duct Ultra™/Low – For conventional applications
where guaranteed performance is required down to 31.5 Hz, including finer
resolution of one-third-octave-band data for applications requiring full
octave band performance to match specific sound sources.
- Quiet-Duct Ultra™/Green – A 100% environmentally
friendly attenuation solution. Silence is achieved through the use of
recycled acoustic fill material. Ideal for any clean and green
application.
- Quiet-Duct Ultra™/ZAPD – For applications in which acoustic
attenuation is required and no allowance can be made for pressure loss. A
Zero-Added-Pressure-Drop silencer is ideal of high velocity systems or
systems that have little or no room for additional pressure drop.
- Quiet-Duct Commercial Series – For conventional applications
including low frequency. Silencers are specifically engineered to enhance
insertion loss in the 63 Hz, 125 Hz, and 250 Hz octave bands.
- Clean-Flow Rectangular Silencers – For systems requiring a
higher degree of cleanliness and hygiene such as in hospitals or clean
rooms. Linings on the fill material guard against erosion of particulate
matter into the air-stream. Specific internal construction features
protect the lining against chafing or premature failure and are necessary
to maintain the rated aero-acoustic performance.
- Conic-Flow Tubular Silencers – For silencer applications
including low frequency. Silencers are specifically engineered to enhance
insertion loss in the 63 Hz, 125 Hz, and 250 Hz octave bands.
- D-Duct™ Acoustic Diffuser Silencers – For use on axial-fan systems.
The combined interior diffuser cone and exterior square jacket casing make
these units aerodynamic-regain devices as well as silencers.
- Ultra-Pals™ Rectangular Packless Silencers – The ultimate solution for
ultra-clean environments and corrosive/flammable environments. The
complete absence of fill makes Ultra-Pals™ Rectangular Packless Silencers
ideally suited for any application where particulate matter or fiber
erosion from conventional fill materials could contaminate the air/gas
streams. The complete absence of fill combined with ease of cleaning and
draining, makes Ultra-Pals™ Silencers
ideal in corrosive/flammable environments and for facilities handling
gasoline, grease, solvents, and other hazardous materials.
- Ultra-Pals™ Tubular Packless Silencers – For small-diameter circular
duct systems such as fume hoods. Additionally, the packless design of
these units makes them equally applicable to the types of systems
mentioned for the Rectangular Ultra-Pals™ Silencers.
- Acoustic Louvers – Twelve inch deep model “R” and model “LP”
louvers allow for ventilation while reducing noise transmission from
building machine rooms. Four inch and six inch Slimshield™ models are
compact for use in walls, doors, or equipment enclosures where airflow is
required.
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United States 
