Emergency Vents

  • Male Threaded Emergency Vents

    Product SKU: 244OM

    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...

  • Female Threaded Emergency Vents

    Product SKU: FIG 244O

    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...

  • Adaptor for Flanged Emergency Vent

    Product SKU: FIG 244A

    Flange adaptors are welded to tank top openings in aboveground storage tanks creating a flanged emergency vent connection.

  • Companion Flange for Emergency Vent

    Product SKU: FIG 244C

    Female threads designed to convert a male threaded pipe nipple to a 150# raised face flange connection.

  • Pipe Nipple

    Product SKU: FIG 244N

    Steel pipe with male threads on one end (T.O.E) or with male threads on both ends (T.B.E).

  • Flanged Emergency Vents

    Product SKU: FIG 244OF

    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...

  • Emergency Vent - Gaskets/Nuts & Bolts

    Product SKU: FIG 244F

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CARB Certification

Morrison Bros. Co. has received approval from California’s Air Resource Board for a Phase 1 Enhanced Vapor Recovery System for Protected Aboveground Storage Tanks. Click here to get started on your CARB certification!

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