The New York Blower Company offers a wide variety of silencer solutions for its fans and blowers. The silencers shown in this supplement have been designed specifically for nyb’s products. They have been rated for acoustical attenuation with air flowing through them. The term “Dynamic Insertion Loss” is used to express attenuation when silencers are rated by this method, which has come to be recognized as the most accurate method for rating equipment that must handle air as well as attenuate sound. The “Effective Flow Resistance” of a Silencer is the result of changes in velocity. The “Effective Flow Resistance” has been incorporated into nyb’s electronic fan selection tool (Fan-to-Size). In addition, Fan-to-Size calculates the silencer’s pressure drop at the desired flow and automatically corrects performance. FEATURES • Versatile Design - While nyb Silencers were designed specifically for mounting on the inlet or outlet (with optional outlet transition) of the fan, they may also be used elsewhere in the duct. • Optional Support Leg - Available on inlet silencers to match fan inlet height. • Ease of Installation - Silencers can be equipped with flanged or slip type connections to fit a variety of mounting arrangements. A venturi inlet with guard is also available for use on the inlet side of the silencer when no duct will be used. • Quality Construction - Heavy welded steel construction ... casing filled with high density acoustical absorption material. • Temperature Capability - Silencers operate efficiently at temperatures up to 600°F. • Accurately Rated - Fan-to-Size calculates changes in airflow and sound attenuation directly as it applies to the fan type, size, and performance inputted for your specific application needs. Visit us on the Web: http://www.nyb.com Phone: (800) 208-7918 Email: [email protected]

DIMENSIONS [Inches] Silencer I.D.

THE NEW YORK BLOWER COMPANY POLICY REGARDING “SOUND” SPECIFICATIONS NOTE: This policy statement is presented both as a guide to purchasers of fan equipment and as a resolution of nyb’s responsibility in cases where the purchaser has requested that nyb equipment meet certain noise level specifications. nyb provides sound power level ratings in each of the eight octave bands, as tested and rated in accordance with Air Movement and Control Association (AMCA) Publication 300. These ratings are statements of the total sound energy levels emanating from the inlet and outlet of the fan itself. These...