Laserfiche WebLink
• <br /> . ,3,54 Updraft Vent <br /> "Open"vent used on underground and aboveground tanks for <br /> petroleum storage tanks.Vent allows the tank to"breathe"during <br /> filling and dispensing operations. 1'/2"and 2"sizes are CARIB <br /> approved. <br /> Vents outward and upward in accordance with NFPA 30. <br /> Note:Open vents will allow unrestricted evaporation of product. <br /> • Body:Aluminum <br /> • Cap:Aluminum <br /> r <br /> • Screen:40 Mesh Brass <br /> Figure 354 <br /> Weight Venting Capacity <br /> 1'/i' .75 lbs 27,650(CFH) <br /> 2" .75 lbs 27,650(CFH) <br /> 3" 1.5 lbs 59,000(CFH) <br /> 4" 2.25 lbs 116,900(CFH) <br /> WARNING: Normal vents such as pressure vacuum and updraft vents for aboveground storage tanks should be sized according <br /> to NFPA 30 (2008) 21.4.3 <br /> WARNING: DO NOT FILL OR UNLOAD FUEL FROM A STORAGE TANK UNLESS IT IS CERTAIN THAT THE TANK VENTS <br /> WILLOPERATE PROPERLY. Morrison tank vents are designed only for use on shop fabricated atmospheric tanks which have been <br /> built and tested in accordance with UL 142,NFPA 30&30A,and API 650 and in accordance with all applicable local,state,and federal <br /> laws. In normal operation, dust and debris can accumulate in vent openings and block air passages. Certain atmospheric conditions <br /> such as a sudden drop in temperature,below freezing temperatures,and freezing rain can cause moisture to enter the vent and freeze <br /> which can restrict internal movement of vent mechanisms and block air passages. All storage lank vent air passages must be <br /> completely free of restriction and all vent mechanisms must have free movement in order to insure proper operation.Any restriction of <br /> airflow can cause excessive pressure or vacuum to build up in the storage tank,which can result in structural damage to the tank,fuel <br /> spillage, property damage,fire,injury,and death.Monthly inspection,and immediate inspection during freezing conditions,by someone <br /> familiar with the proper operation of storage tank vents, is required to insure venting devices are functioning properly before filling or <br /> unloading a tank. <br /> Uftrison Bros. Co. P.O.Box 238•Dubuque,Iowa 52004-0238 <br /> 563.583.5701 (tel)•800.553.4840.563.583.5028(fax) <br /> Established 1855 www . morbros . com <br />