UL Listed 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 ï¬re.
Vent must be used in conjunction with a "œnormal vent." Correct application of this vent requires proper vent size and selection for the tank system in order to meet the speciï¬c venting capacity requirement.
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.
API 2000; International Fire Code; National Fire Code of Canada; NFPA 1, 30, 30A, 31, 37, 110; PEI RP200; PEI RP800; Underwriters Laboratories Inc. UL-142, UL-2085, UL- 2244; Underwriters Laboratories of Canada CAN/ULC S601-07, CAN/ULC S602-07, CAN/ULC S652-08.