SPIGOT SILENCER
SPIGOT SILENCER
The document provides details on SPIGOT and SILENCER models available for next-day delivery. These are small metric range attenuators with spigot connections, ideal for small fans, cross talk elimination, and flexible or spiral ducting.
Construction
Both SPIGOT and SILENCER are constructed from galvanized sheet steel with a sound attenuating lining. They feature a steel spigot for easy mounting. For kitchen extract applications, Melinex lined silencers are recommended to prevent grease impregnation, as per DW/172 HVAC specifications.
Silencer Attenuation
The document explains how to determine the sound level of a fan fitted with a silencer by subtracting the dynamic insertion loss from the fan's sound power level spectrum. The dynamic insertion loss varies with air velocity and flow pattern.
Dynamic Insertion Loss
The dynamic insertion loss is the difference between the sound power level of a fan and silencer combination and that of the fan alone. The document provides tables with insertion loss values for different product codes and lengths.
Square / Rectangular Silencers
For highly noise-sensitive areas, Elta offers optional splitter silencers for greater attenuation.
Dimensional Data
The document includes detailed dimensional data for various product codes, specifying fan diameter, dimensions, and weight.
Notes
Elta Limited reserves the right to supply products that may differ from those illustrated and described. Confirmation of dimensions and data is available upon request.
Catalog excerpts
> Selec models available for next day delivery
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SPIGOT SILENCER Small metric range of attenuators with spigot connection Ideal for small fans Ideal for cross talk elimination Ideal for flexible or spiral ducting Construction Both types are rigidly constructed in galvanised sheet steel, with a highly absorbent sound attenuating lining between the outer casing and the inner perforated steel lining. The end faces of the silencer do not have threaded holes for fixings, but has a steel spigot for ease of mounting. Melinex lined silencers must be used to prevent grease impregnation into the acoustic media for kitchen extract applications as prescribed...
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For sizes 560-710, please contact Elta. Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
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For sizes 500-710, please contact Elta. Dimensions are in mm. Email [email protected] Website eltauk.com
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SPIGOT SILENCER Notes Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
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SPIGOT SILENCER Notes Email [email protected] Website eltauk.com
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SPIGOT SILENCER Notes Elta Limited has a policy of continuous product development and improvement and therefore reserves the right to supply products which may differ from those illustrated and described in this publication. Confirmation of dimensions and data will be supplied on request.
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Tel +44 (0) 1384 275800 Email [email protected] eltauk.com 068-JF-11-2018 Issue B A member of HEVAC ASSOCIATION
Open the catalog to page 8All ELTA FANS catalogs and technical brochures
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