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Blast and Special Airflow Control Valves

Explore our range of blast valves and dampers, overpressure & differential pressure valves, gas-tight & special ventilation valves for protected spaces

Atmas presents a wide selection of blast valves and overpressure valve for ventilation and air filtration systems of civil defence shelters, safe rooms, industrial applications and other types of protective structures which require protection of ventilation ways and internal space from blast wave pressure coming from outside.​

Our professional, tested and certified valves are installed in thousands of facilities to protect people and equipment. The valves are approved by various civil defence authorities and certified according to most modern standards.​ The valves we offer can be used in new construction or retrofitted in existing (modernization) projects.​​​

Blast and Special Airflow Control Valves Offer

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Blast Valves and Blast Dampers

Automatic action, normally open valves and dampers for installation on ventilation openings and air ways for protection of internal spaces against destructive blast wave effects.

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Blast Dampers

Blast dampers are used in ventilation systems to prevent the blast wave through external walls into the building. They are designed with high ventilation capacity. 

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BVNC - Overpressure Blast Valves

BVNC overpressure blast valves are normally closed valves, designed to control the overpressure level in the gastight shelter and between compartments like airlocks and more. 

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GK - Gastight Valves / Shut-off Valves

GK gas-tight valves are designed for installation on entrance or as part of the ventilation ducts to isolate areas from hazardous gases during emergencies.

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Wall Sleeves & Retrofit Flanges

Wall sleeves are intended to be casted in shelter concrete walls, creating open passage and designed for connection of the blast valves, overpressure valves, gas tight valves, air duct, cable gas tight passages and more.​​

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