Small adsorbers containing 10 lbs of Centaur HSV. Used to connect to 4” to 10” vents. SweetVent is an odor control product designed to control vent stack odor emissions. These emissions can be from a range of sources, such as municipal and industrial wastewater facilities, restaurants, and various commercial and industrial operations. SweetVent is a simple device that attaches to the end of a vent stack. SweetVents come in two varieties: slip-on or flanged vent stack connection. Both varieties are available in a range of sizes. All SweetVents contain 10 pounds of Calgon Carbon's Centaur' HSV catalytic activated carbon.