BS&B FlameSaf™ Flame arresters are utilized as secondary protection against explosions. They effectively prevent the transmission of deflagration and detonation in various applications. Flame Arresters allow flow while preventing flame transmission when positioned in-line or at the end of line. BS&B TankSaf™ Breather vents, also known as conservation vents or pressure and vacuum relief vents, are designed to safeguard closed vessels or tanks that handle flammable or non-flammable fluids.