JUSTRITE® 08300 BRASS HORIZONTAL SAFETY DRUM VENT FOR PETROLEUM BASED APPLICATIONS FILL AND STORE LIQUIDS SAFELY WITH JUSTRITE’S DRUM VENTS AND FUNNELS. DRUMS OF FLAMMABLE LIQUIDS REQUIRE VENTING TO RELIEVE PRESSURE BUILD-UP DUE TO HEAT AND ALSO TO PREVENT CREATION OF A VACUUM WHEN LIQUID IS BEING DRAINED OFF OR THE DRUM IS SUBJECTED TO SUDDEN COOLING. EITHER PRESSURE OR VACUUM CAN CAUSE FAILURE OF THE CONTAINER. IN EVENT OF FIRE, THE HAZARDS OF DRUM LEAKAGE OR EXPLOSION DUE TO EXCESSIVE PRESSURE BUILD-UP CAN BE CATASTROPHIC. JUSTRITE®’S SAFETY DRUM VENTS PROVIDE AUTOMATIC PRESSURE RELIEF FOR DRUMS BETWEEN 3PSI (20KPA) BUT LESS THAN 8 PSI (55KPA). DEPENDING ON THE MODEL, VACUUM RELIEF IS EITHER AUTOMATIC (ON HORIZONTALLY INSTALLED VENTS) OR MANUAL (ON VERTICALLY INSTALLED VENTS). THEY ARE TESTED TO ALLOW ONE LITER (61 CUBIC INCH) OF WATER THROUGH A 3/8″ (9.5MM) PIPE NIPPLE IN LESS THAN 6 SECONDS. WHILE IN THE CLOSED POSITION, THE VENTS PREVENT ESCAPE OF FLAMMABLE VAPOR. ALL SAFETY DRUM VENTS INCLUDE A FLAME ARRESTER FOR ADDED SAFETY. INCLUDES A LIMITED WARRANTY OF 1 YEAR.