Description
“This 3″” emergency vent is used on 275-gallon oil storage tanks to maintain UL listing for the storage system. If tank becomes engulfed in fire, vent opens to prevent rupture. U.S.A. Vent has 8 oz./sq. in. opening pressure with 59,900 CFH @ 2.5 PSI venting capacity 3in. NPTM thread for mounting to standard 3in. bung opening Model Number: 901946. Age Group: adult.”
