931952100 GDM 3011 BLACK Hirschmann 3P+E DIN 43650 A Solenoid Valve Connector, Female. GDM series valve connectors are suitable for use in machine building and tooling, equipment manufacturing, designed to facilitate power and signal transmission for components such as magnetic valves, pressure transducers flow monitors and temperature sensors. These durable valve connectors are not affected by voltage surges or electro magnetic interference.