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Universal Silencer's Industrial Fan Silencers

Primary air fans, forced draft fans, and induced draft fans generally require some form of acoustical treatment. Most applications require inlet and/or outlet silencers to meet OSHA and other noise requirements. For continuous exposure, a maximum of 90 dBA is generally specified to avoid hearing damage. When conversation near the fan is desired, levels of 80 dBA and less are often needed.

Universal Silencer designs and manufactures a complete line of silencers for application on all fan types. Computer-enhanced technology developed for fan, turbine, and other air-moving equipment enables Universal to offer a cost-effective solution to every fan silencing application.

Universal Silencer offers four designs, each with unique advantages, depending upon application-specific requirements for octave band attenuation, pressure drop, and space utilization.
 
SU5 Series: Annular Flow Silencer
The SU5 Series is our highest grade standard cylindrical absorptive silencer. Its design consists of two packed concentric perforated cylinders that form an annular flow path. This design features blocked-line-of-sight from inlet to outlet, yet provides a large flow area for low flow resistance. The SU5 is constructed from mild steel with a primer coated exterior. The standard SU5 silencer is suitable for temperatures up to 325°F.
 
AFS Series: Absorptive/Reactive Silencer
The AFS Series Fan Silencer combines a chamber reactive and absorptive design that both reflects acoustic energy and dissipates it with absorptive pack material. Constructed from plate and sheet steel in an all-welded, straight-through flow path design, the AFS Series is suitable for most applications on the inlet and discharge of centrifugal or axial blowers, especially when low pressure drop is required. The standard AFS Silencer is suitable for temperatures up to 325°F.
 
IFS Series: Absorptive/Parallel Baffle Silencer
The IFS Series Fan Silencer uses parallel baffles filled with absorptive pack between perforated face sheets to dissipate acoustic energy. The silencers are constructed from sheet and plate steel with rectangular flanged inlet and outlet; transitions are available for other cross-sections. The silencer is painted inside and outside with our standard shop coat primer; high-temperature paint is available upon request. Constructed from corrosion-resistant materials, the baffles remain unpainted and are designed with rounded entrances in a straight-through flow design for low pressure drop. The standard IFS Silencer is available in a variety of sizes up to 144" square face area and 160" in length with three grades of silencing, depending upon specific acoustic requirements. The standard IFS Silencer is suitable for temperatures up to 325°F.
 
TFS: Absorptive/Tubular Flow Silencer
The TFS Series Fan Silencer uses staggered perforated flow tubes surrounded by absorptive pack material to dissipate acoustic energy. The flow tubes are constructed from corrosion-resistant materials and held in place with a steel tube sheet. TFS Silencer shells are made from sheet and plate steel with rectangular flanged inlet and outlet; Transitions are available for other cross-sections. The silencer is painted with our standard shop coat primer; high-temperature paint is available. The TFS Series has a straight-through flow design and is available in standard sizes up to 96" square face area and 72" in length. The standard TFS Silencer is suitable for temperatures up to 325°F