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 impurities from the pipeline to prevent blockage. If water quality is poor, regular maintenance of the valve is recommended. If the user notices longer refill times, flush the inlet. Working pressure range: 0.2–10 kg (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 sinks. This action moves the orifice rod to open the pilot port. As the water level rises, the float lifts, pressing the lever to close the pilot port. Water then fills the valve chamber, causing the main valve to close. The sealing surface stops water flow immediately. Color: white Material: ABS Package Contents: 1 x water level control valve Note: Color variations may occur due to lighting conditions and display settings. Measurement tolerance: ±1–3 cm.