The Gizmo Engineering DP/B series is a series of drum suction pipes that extract chemicals from drums to eliminate pumping air. Drums are pumped out nearly completely, which will aid in the reduction of wasted residual chemical. There is a built in suction screen to prevent particles/debris/crystals from entering into a user's pump. This screen is removable and replaceable. The included compression fitting accommodates any tubing size with an outer diameter from 1/4 to 3/4in.