Type ‘Bd’ Breather Drains Type ‘Bd’ Breather Drains are used to allow the air inside an ‘Ex d’ Flameproof or Class I, Division 1 Explosionproof enclosure to breathe with the surrounding atmosphere and also to allow any moisture that enters the enclosure to drain while maintaining the overall integrity of the installation.  Breather Drain Type ‘Be’ Breather Drains Type ‘Be’ Breather Drains are used to allow the air inside an enclosure to breathe with the surrounding atmosphere and also to allow any moisture that enters the enclosure to drain while maintaining Increased Safety method of Ex protection and overall integrity of the installation.  Breather Drain