Operating Principle
Inside the plug is a spring-loaded poppet valve that stays closed when not connected. When screwed into the corresponding ISO‑A socket, locking balls engage and the valve opens to allow flow. Once disconnected, the valve closes instantly to prevent fluid loss and contamination. The threaded design ensures a vibration-resistant, secure fit that won't loosen accidentally. This makes coupling and uncoupling fast, clean, and tool-free even under pressure.
