This is a suitable option for applications with multiple suction pads for a single vacuum pump. The design that incorporates a vacuum check valve miniaturizes the vacuum pump required for the application, achieving energy savings for the device. It is ideal for applications where the number of workpieces to be suctioned varies each time or where workpieces of different sizes are flowing through. It is also effective for workpieces with high leakage, such as fiberboard and cardboard. It is effective against workpieces with high leakage from the lip part of the suction pad. You can choose from three types of valves according to the vacuum pressure and the leakage flow rate. The valves are built into aluminum fittings with male and female threads, making installation easy. Watch the video (YouTube) here: https://youtu.be/pcfpJkUtnO8 See the product lineup here: https://www.piab.com/ja-jp/vacuum-pumps-and-ejectors/accessories-for-vacuum-ejectors-and-pumps/valves/0129339/