Note: The product is a liquid level control valve. After installation, the float must be vertical. If installing from the top, an elbow is required to connect the float valve and the inlet line. First, secure the water inlet pipe on a horizontal surface, then connect the automatic water level control valve to the inlet according to standard procedures. The main water inlet must align with the nominal diameter of the control valve. During operation, the shut-off valve must be fully open. If two valves are installed in the same tank, they must be mounted at the same height. Before installation, clean all pipeline impurities to prevent blockage. If water quality is poor, regular maintenance is recommended. If the user notices extended refill times, flush the inlet by opening it briefly. Working pressure range: 0.2–10 kg/cm² (0.1–1 MPa) Applicable medium: clean water Maximum medium temperature: ≤120°C Installation type: Vertical internal installation Outlet diameter: 1/2", 3/4", or 1" BSP thread Working principle: When the water level in the tank or tower drops, the float inside the valve chamber descends, actuating the pilot rod to open the pilot orifice. As the water level rises, the float lifts and presses the lever to close the pilot orifice. The valve chamber fills with water, causing the main valve to close and stop water flow immediately at the sealing surface. Color: White Material: ABS Package contents: 1 x water level control valve Note: Due to lighting conditions and display differences, the actual product color may vary slightly from images. Measurement tolerance: ±1–3 cm.