The Blast Valve with Prefilter Type ESVF 2403 X is a heavy duty valve that protects the interior of a shelter from blast waves caused by outside explosions. A prefilter with an efficiency of 85% is fully integrated. The valve is normally open. The Blast Valve with Prefilter Type ESVF 2403 X protects against explosive and implosive waves. The valve is normally open with an airflow rate up to 3000 m³/h (1770 cfm). It is maintenance-free and temperature and corrosion resistant. The springs are manufactured from special stainless steel and all steel parts are phosphate treated and finished with a powder coating.
