lindab | circular silencer Circular straight silencer with baffleSLBGU Dimensions and sound data l Ød y Ød 1 Description SLBGU is a circular straight silencer with centre splitter. Nominal insulation thickness is 100 mm provided with 100 mm thick baffle. This gives very good attenuation across the entire range. Used when the acoustic require¬ments exceed the performance capabilities of the SLGU. Especially suitable for the large dimensions. Attenuation material is mineral wool. The SLBGU are made of strong outer spiral seemed tube and an inner tube made of steel with small openings to be able to withstand mechanical cleaning and at the same time not interfere with the insertion loss. The space between them is filled with mineral wool and a nonwoven cloth is inserted between inner tube and the attenuation material, to prevent fibres from the insulation getting into the duct system. Silencer can be cleaned by rotating nylon brushes, vacuum cleaner or damp cloth. Technical data for insertion loss, pressure drop and self- generated noise based on test conducted in accordance with ISO 7235. Special materials and sizes, please contact Lindab sales. Ød 1 l [nom][nom] 63 315 900 6 315 1200 7 400 900 4 400 1200 6 400 1500 7 500 900 4 500 1200 4 500 1500 4 630 900 3 630 1200 3 630 1500 4 800 1200 2 800 1500 2 Insertion loss [dB] for centre frequency [Hz] 125 250 500 1k 2k 4k 9 20 34 39 44 34 12 27 39 50 50 45 6 13 22 24 26 20 9 19 29 33 35 24 12 25 38 42 44 29 6 13 17 19 19 12 8 19 24 26 26 17 9 25 31 33 33 20 4 10 12 14 12 10 7 14 17 18 17 12 8 19 23 23 20 14 4 11 12 13 11 9 5 15 17 16 14 10 Ød y m 8k [mm] [kg] 22 510 25,5 27 510 33,6 17 625 29,9 19 625 39,5 22 625 48,7 12 735 34,3 15 735 45,1 18 735 55,7 10 880 43,2 12 880 56,7 14 880 69,9 8 1030 74,3 9 1030 91,6 Size 315 is supplied with preinstalled Safe-connectors. Size 400–800 is supplied with loose NPU-couplings. NPU NPU NPU Order code Product SLBGU d l t SLBGU Connection (d) in mm (Ød 1nom ) 315 - 800 mm Length (l), in mm (l nom ) 900 - 1500 mm Insulation thickness (t) in mm 100 mm Example: SLBGU 315 - 1200 - 100 LindQST To select the appropriate silencer and optimize connection size and length for the best performance you can use our online tool LindQST or our free to download software DIMsilencer. Visit www.lindQST.com. Lindab reserves the right to make changes without prior notice DUCT-MC Identification number 17.11.002 Last modified: 2021-07-14 1 Rev: 2019-06-18
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