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
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.
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.
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.






