Morrison Bros. 245M Series Male Threaded Emergency Vent (MO245M0200AV,MO245M0300AV,MO245M0400AV,MO245M0600AV,MO245M0800AV)
Morisson's Model 245M is a lightweight, spring-loaded emergency vent (pressure relief only) used on aboveground storage tanks, as a code requirement, to help prevent the tank from becoming over-pressurized and possibly rupturing if ever exposed to fire. This vent must be used in conjunction with a "normal vent". Correct application of this vent requires proper vent size and selection for the tank system in order to meet the specific venting capacity.
Note: Emergency vent should be set higher than the normal vent so the normal vent operates first.
Dual disc for easy opening and cushion closure
Right angle design
Durable metal-to-metal seats
Thermal expansion relief in 25 PSI
200 PSI cold non-shock pressure ...