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SMBA

Product catalog summary

Overview: The document discusses Surface Mounted Blast Attenuators (SMBA), which are stationary louvered attenuators designed to protect HVAC air intake and outlet openings in buildings subjected to blast design overpressure below 0.07 barg (7 kPag). These attenuators are used when blast protection valves do not close due to insufficient overpressure.

Design and Installation: SMBA can be installed flush with the wall or projecting from it, with the latter allowing for self-draining of sand trapped by the blades. They are designed to provide a tortuous flow path to create significant resistance to incoming blast waves, reducing downstream overpressure. They are suitable for both vertical and horizontal installations.

Construction: The attenuators consist of two or more opposite rows of V-shaped blades welded in a rectangular frame, made from heavy-gauge galvanized steel and factory-painted unless specified otherwise.

Performance: Typically, the airflow speed through the attenuators ranges from 2 to 4 m/s, resulting in a pressure drop from 70 to 200 Pa. The expected residual downstream pressure is approximately 50% of the incoming pressure wave. Special sizes are available upon request.

Additional Information: The document includes typical installation dimensions and notes that Sagicofi m S.p.A. reserves the right to change or modify product features and specifications without prior notice.

Contact Information: Sagicofi m S.p.A., Comfort Filtration Engineering, via Firenze 1, 20063 Cernusco sul Naviglio, Milan, Italy. Tel: +39 02 929021, Fax: +39 02 92902300, Email: info@sagicofi m.com, Website: www.sagicofi m.com

Catalog excerpts

SMBA Surface Mounted Blast Attenuators

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Surface Mounted Blast Attenuators The blast attenuators SMBA are stationary louvered type attenuators to be installed for the protection of HVAC air intake and outlet openings of the speciﬁed buildings subjected to a blast design overpressure lower than 0.07 barg (7 kPag), where the blast protection valves would not however close due to insufﬁcient overpressure. Blast attenuators can be designed to be installed ﬂush with the wall or projecting from it; in this second installation typology, blast attenuators are self-draining of the sand trapped by the blades. The blast attenuators construction...

Open the catalog to page 2

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