Flammer - Pressure Vacuum Valve Approved as End of Line Flame Arrester

End of Line Deflagration Flame Arrester and Pressure Vacuum Valve approved to EN ISO 16852.  Deflagration = Explosion propagating at subsonic velocity. The pressure/vacuum valve approved as end of line deflagration flame arrester installed at end of vent pipes prevents light-back at deflagration of potentially explosive vapor-air, and or gas-air mixtures from outside (atmospheric conditions) to the protected side (e. g. storage tank).