Morrison 244 Series 4 in. Male Threaded Emergency Vent – 8 oz/sq inch

Description

Morrison 244 Series 4 in. Male Threaded Emergency Vent The Morrison 244 Series threaded emergency vent caps are made with durable powder-coated cast iron covers and automatically reset after opening. These vents help prevent tank over-pressurization and possible rupture. They must be used in conjunction with a normal vent. Emergency vents are a code-required safety feature for aboveground storage tanks, providing high-capacity pressure relief in the event of a fire. When internal pressure reaches the set opening point, the vent’s weighted cover lifts to release air, then automatically resets as pressure falls. CFH = Cubic Feet Per Hour @ 2.5 PSI Features Automatically resets after opening Durable powder coated cast iron covers Male NPT mounting connection CARB EVR models Certified CFH flow capacities Theft deterrent screens available Construction Details 244OMA Model Body: Aluminum Cover: Aluminum O-Ring: Viton Screen: 4 mesh stainless steel (optional) Center Pin: Zinc plated steel 244OM Model Body: Aluminum Cover: Powder coated cast iron O-Ring: Viton Screen: 3 mesh stainless steel on 3