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

• 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