FIG 244O
Female Threaded Emergency Vents
Vents | Emergency Vents
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CapabilitiesFIG 244OF
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 fire. The vent must be used in conjunction with a “normal vent.” Correct application of this vent requires proper vent size and selection for the tank system in order to meet the specific venting capacity.
WARNINGS: The 244 emergency vent is for emergency pressure relief only and must be used in conjunction with a normal vent or pressure vacuum vent such as a Morrison Fig. 354, 548,748, 749 or 922. The 244 emergency vent must be properly sized and selected for each specific tank application in order to meet the proper venting capacity requirements. See the Morrison Vent Guide for further instructions.
WARNING: DO NOT FILL OR UNLOAD FUEL FROM A STORAGE TANK UNLESS IT IS CERTAIN THAT THE TANK VENTS WILL OPERATE PROPERLY. Morrison tank vents are designed only for use on shop fabricated atmospheric tanks which have been built and tested in accordance with UL 142, NFPA 30 & 30A, and API 650 and in accordance with all applicable local, state, and federal laws. In normal operation, dust and debris can accumulate in vent openings and block air passages. Certain atmospheric conditions such as a sudden drop in temperature, below freezing temperatures, and freezing rain can cause moisture to enter the vent and freeze which can restrict internal movement of vent mechanisms and block air passages. All storage tank vent air passages must be completely free of restriction and all vent mechanisms must have free movement in order to insure proper operation. Any restriction of airflow can cause excessive pressure or vacuum to build up in the storage tank, which can result in structural damage to the tank, fuel spillage, property damage, fire, injury, and death. Monthly inspection, and immediate inspection during freezing conditions, by someone familiar with the proper operation of storage tank vents, is required to insure venting devices are functioning properly before filling or unloading a tank.
Code Compliance
When properly sized for the tank, this vent will conform to the requirements of the International Fire Code; National Fire Code of Canada; National Fire Protection Agency—NFPA 20, 30, 30A, 31, 37, 110; Petroleum Equipment Institute—PEI RP200, PEI RP800; Underwriters Laboratories Inc.—UL-142, UL-2085, UL-2244; Underwriters Laboratories of Canada—CAN/ULC S601, CAN/ULC S602, CAN/ULC S652
Approvals
California Air Resource Board (CARB) Phase 1 Enhanced Vapor Recovery (EVR) AST Certified Products (VR-402-B); Underwriters Laboratories Inc. UL-2583
*10” 2.5oz vent is UL Listed, but NOT listed to UL 2583
Fig | Suffix | Size | Description | Weight |
244OF | 0600 AV* | 4” 8oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 11 |
244OF | 0600 AVE | 4” 8oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 11 |
244OFS | 0600 AV | 4” 8oz/sq.in. | Emergency Vent - Flanged - w/O-Ring, W/Screen - UL & ULC Listed | 11 |
244OF | 0170 AV* | 4” 16oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 23 |
244OF | 0170AVEVR | 4” 16oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 20 |
244OFS | 0170 AV | 4” 16oz/sq.in. | Emergency Vent - Flanged - w/O-Ring, W/Screen - UL & ULC Listed | 20 |
244OF | 0050 AV* | 6” 8oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 21 |
244OF | 0050AVEVR | 6” 8oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 21 |
244OFS | 0050 AV | 6” 8oz/sq.in. | Emergency Vent - Flanged - w/O-Ring, W/Screen - UL & ULC Listed | 21 |
244OF | 0075 AV* | 6” 16oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 38 |
244OF | 0075AVEVR | 6” 16oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 38 |
244OFS | 0075 AV | 6” 16oz/sq.in. | Emergency Vent - Flanged - w/O-Ring, W/Screen - UL & ULC Listed | 38 |
244OF | 0100 AV* | 8” 8oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 43 |
244OF | 0100AVEVR | 8” 8oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 43 |
244OF | 0200 AV* | 8” 16oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 67 |
244OF | 0200AVEVR | 8” 16oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring, UL & ULC Listed | 67 |
244OF | 0300 AV* | 10” 2.5oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 25 |
244OF | 0400 AV* | 10” 8oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 57 |
244OF | 0400AVEVR | 10” 8oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 57 |
244OF | 0500 AV* | 10” 16oz/sq.in. | Emergency Vent - Flanged - w/O-Ring - UL & ULC Listed | 103 |
244OF | 0500AVEVR | 10” 16oz/sq.in. | Emergency Vent - Flanged - w/FKM B O-Ring - UL & ULC Listed | 103 |
* Indicates model is available in a kit. | ||||
Flanged kits | ||||
244OF | 04080 AK | 4” 8oz/sq.in. | Includes 244OF-0600 AV vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 04160 AK | 4” 16oz/sq.in. | Includes 244OF-0170AVEVR vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 06080 AK | 6” 8oz/sq.in. | Includes 244OF-0050AVEVR vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 06160 AK | 6” 16oz/sq.in. | Includes 244OF-0075AVEVR vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 08080 AK | 8” 8oz/sq.in. | Includes 244OF-0100AVEVR vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 08160 AK | 8” 16oz/sq.in. | Includes 244OF-0200AVEVR vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 10025 AK | 10” 2.5oz/sq.in. | Includes 244OF-0300 AV vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 10080 AK | 10” 8oz/sq.in. | Includes 244OF-0400AVEVR vent, flange adaptor, gasket, and nuts/bolts | |
244OF | 10160 AK | 10” 16oz/sq.in. | Includes 244OF-0500AVEVR vent, flange adaptor, gasket, and nuts/bolts |