These valve-free 3/8" DN8 D Series Swing Couplings provide a fast and easy connection and guarantee free flow in a compact, easy to manage design. A simple turn activates an air vent to provide ventilation and safety to the hose. These new-generation Couplings are available in nominal sizes DN6 - DN11, DN8 featured here, and are compatible with most common plug systems (parts listed on this page fit the plug style pictured). They meet safety standard requirements and earned certificates listed. Increase the safety and efficiency of your operations and reduce your energy consumption with this economical choice. "Safely Swing to Connect!".