The Groz Standard Air Filters are used to separate dust, dirt, moisture and other contaminants from compressed air. These filters have a die cast aluminum filter head, polycarbonate bowl with a steel bowl guard and high-performance sintered bronze 40-micron filter element. The air filter bowl is equipped with a semi-automatic drain at the bottom of the bowl that drains off the bowl once compressed air supply to filter is switched off. This air filter is designed with a separator and shield for efficient moisture separation.