The Trident Level Sensing Drain Valve works on the **principle of automatic condensate removal using liquid level detection**. As compressed air passes through the system, moisture and oil collect in the drain chamber. A built-in level sensor monitors the condensate level, and when it reaches a preset point, the valve opens to discharge the collected liquid. Once the condensate is expelled and the level drops, the valve closes immediately to prevent compressed air loss. This smart operation ensures reliable condensate management without relying on timers, reducing energy waste and maintenance.