The Overpressure Blast Valve Type A 810 is designed to release air from the shelter while maintaining a constant overpressure and also to protect against explosive and implosive blast waves. The valve is normally closed, is maintenance-free, and withstands heat and corrosion. The springs are manufactured from special stainless steel and all steel parts are phosphate treated and finished with a powder coating.
The Overpressure Blast Valve Type A 810 is used to stop explosive blast waves from entering a bomb shelter as well as to regulate the air pressure inside the shelter. The valve is tested and certified to the Israeli Standard 4570 by the Civil Defence Command and the Standards Institution of Israel.
