Note: The product is a liquid level control valve. After installation, the float must be vertical. If you need to install from the top, you need an elbow to connect the float valve and the inlet line. First, fix the water inlet pipe on a horizontal , and then connect the automatic water level control valve to the water inlet according to the standard. The main water inlet should be aligned with the normal diameter of the control valve. When in use, the shut-off valve should be fully opened. If two valves are installed in the same tank, they should be at the same height. Before installation, please clean the impurities in the pipeline to prevent blockage. If the water quality is not good, the valve needs to be properly maintained. If the user finds that the time for adding water becomes longer, he can upload the water inlet and rinse Working pressure range: 0.2-10KG (0.1-1MPa) Applicable medium: clean water Applicable medium temperature: less than or equal to 120℃ High temperature medium temperature: 10℃~120℃ Type: Vertical internal installation Outlet diameter: 1 inch thread Working principle: When the of the water tower or the pool falls, the float in the valve chamber sinks. Use the orifice rod to open hole of the control valve. Lift up, the joystick to close hole, the valve cavity begins to fill with water, and then close the control valve. The sealing of the control valve immediately stops water supply. Colour: white Material: ABS Package Contents: 2 x water level control valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.