Emergency vents are installed on aboveground storage tanks as a code requirement. Emergency vents provide 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 automatically reset. CFH = Cubic Feet Per Hour @ 2.5 PSI Features Automatically resets after opening Durable powder coated cast iron covers Flanged mounting connection CARB EVR models Certified CFH flow capacities Theft deterrent screens available Construction Details: Body: Aluminum Cover: Powder coated cast iron O-Ring: Viton A Screen: 3 mesh stainless steel Certifications When properly sized for the tank, this vent will conform to the following requirements: NFPA 30 30A UL 142 ULC S601 API 2000 IFC PEI RP200 California Air Resources Board Phase I AST EVR Venting Guide Venting Guide (PDF Download)
Morrison Bros. Morrison Bros. 244 Series 4 in. Flanged Emergency Vents - 16 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $207.28 Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 10 in. Flanged Emergency Vents - 8 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $607.42 Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 6 in. Flanged Emergency Vents - 16 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $287.12 Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 8 in. Flanged Emergency Vents - 16 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $439.24 Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 4 in. Flanged Emergency Vents - 8 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $154.05 Ready to Ship Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 8 in. Flanged Emergency Vents - 8 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $390.34 Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 6 in. Flanged Emergency Vents - 8 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $236.94 Ready to Ship Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series 10 in. Flanged Emergency Vents - 2 1/2 oz/sq inch MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $576.09 Quick view Add to Cart The item has been added
Morrison Bros. Morrison Bros. 244 Series Flanged Emergency Vents MSRP: Was: Now: (Inc. Tax) MSRP: Was: Now: $154.05 Quick view Choose Options