Blast / Overpressure & Airflow Control Valves
Atmas offers a comprehensive range of blast valves and overpressure valves for civil defence shelters, bunkers, safe rooms and protected facilities. Our valves are designed for shelter ventilation, CBRN air filtration and blast protection systems, protecting ventilation openings, air ducts and internal spaces against external blast-wave pressure and overpressure while allowing reliable airflow during normal operation.
Our tested and certified blast-resistant ventilation valves are installed in thousands of protective structures worldwide, helping protect people, critical equipment and infrastructure. Solutions are available to meet various civil defence standards, shelter requirements and blast protection specifications.
Atmas blast valves and overpressure valves are suitable for new shelter construction, bunker and safe-room ventilation, industrial protection, shelter renovation and modernization, as well as retrofit installation in existing ventilation and air filtration systems.
Explore our range of blast valves and blast dampers, overpressure and differential pressure valves, gas-tight and airflow control valves
Blast Valves
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.
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.
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.
Wall Sleeves & Flanges for Valves Installation
Wall sleeves and retrofit flanges provide secure connections for installing blast valves, ventilation ducts and other components through/on concrete walls. Designed for different wall thicknesses and applications, they ensure a strong, reliable and properly integrated installation.
Multi-Cable Transit (MCT) for Safe Wall Passage
MCT is a modular wall or floor penetration system designed to provide secure and sealed passage for electrical, communication and control cables through walls, floors and other structural elements.
MCT solutions can provide gastight, watertight, fire-resistant and pressure-resistant sealing.
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