Breathing Manhole     Breathing Manhole With Flame Arresting

Breathing Manhole and Breathing Manhole With Flame Arresting is a kind of emergent venting device for safety, which shall be installed on the top of the tank roof. It is usually used together with breather valve and flame arrester. It cannot only avoid sudden extra-pressure or vacuum in tank causing storage tank, especially used for normal-pressure dome roof tanks with nitrogen-covered storage fuel. The products have advantages in exhaling and inhaling under fixed pressure, open and closed by accidents but also arrest the flame safety. At present it has been applied very well in protect freely, safe arresting flame, compact structure, well-performed sealing and safety reliable etc.

Body Material A3、SS304、SS304L、SS316、SS316L Fire Arresting trim Material SS corrugated plate with flame arresting and anti-explosion Seal Material Asbestos、PTFE Flame arrester grade BS5501: ⅡA、ⅡB、ⅡC Ambient Temperature -30～+60 Operating pressure -392Pa～+1961Pa (-40mm H2O～+200mm H2O)   DN ￠ H 500 760 590 600 880 720 750 955 890