Trident is one of the biggest automatic drain valve manufacturers in Indonesia. Our Automatic drain valve series represents the ultimate in valve performance. Decades of experience of valve manufacturing have allowed us to identify the issues commonly associated with drain valves and undertake the necessary improvements required. Today the CTD valve incorporates an ultra-reliable MCU, which features dual control of both drain cycle and drain valve open-time. The oversized orifice design and a specifically designed solenoid operator section allow rapid discharge of dust and particles.