When you install the water tank float valve in the water tank and adjust it to the water level you need, it can run accurately. The float valve has a filter at the water inlet, which can isolate most impurities and make the water out cleaner (please remove the water leveler float valve kit regularly to clean the filter to avoid clogging). The water level float valve has an ingenious design and multiple improvements, so that the automatic water level ball valve can control the water level you want without using electricity. At the same time, the 3 or 4 float valve is suitable for most water pipes, so 't worry about the problem that the connection port cannot be installed Most of the automatic water level control mini float valve is made of high-quality stainless steel, which is durable, not easy to damage, and will not rust due to long-term soaking in water. The size of the float water shut off valve is 4.33 x 2.17 x 2.17IN, and the diameter of the water inlet is 0.75IN. The small size allows you to install it wherever you need it, without appearing crowded or taking up too much space. the automatic floating ball water level control valve only needs to check whether it is complete, then you can screw it to your water pipe, adjust the auto fill valve to the water level you want, and then it can work normally . The compact size and easy installation make the auto shut off ball mini float valve suitable for water tanks, swimming pools, ponds, animal automatic water feeders, etc. Specification: A-(3 or 4 upper water inlet plus fixing clip) Color: Silver Material: stainless steel Package Contents: 1 pcs x auto fill 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.