Morrison MO245MB0200AV 2 in. Male Threaded Emergency Vent – 8 oz./sq in.

Morrison Bros 245MB0200AV 2 in. Male NPT Threaded Emergency Vent with O-Ring provides high capacity pressure relief if the tank is exposed to fire. When the internal tank pressure reaches the opening pressure of the vent, the weighted cover moves up on the center pin, allowing air to escape. When the internal tank pressure falls, the cover automatically lowers back onto the body and is reset. The vent must be used in conjunction with a “normal vent.” Correct application of this vent requires proper size and selection for the tank system to meet the specific venting capacity.