[Easy to install water tank float valve]It's a mini float valve,plastic ball size is small,so easy to install. Built standard male thread, it perfectly to screw into standard female connector, the male thread is longer, that's for tightening the threads. The float valve comes with Tape and 1/2 inch elbow and 1/2 inch to 3/4 inch adapter. [Automatic water shut off valve]This float valve is an automatic shut-off valve, when the water level reaches the control position, the float valve will automatically stop the water supply, when the water level , the float valve automatically open the water, so it is a fully automatic water level controller [No electricity request]A Float ball inside allows water to flow until a specific level is reached. Once the water reaches this level, the float valve will be pushed up with water due to buoyancy and stop the flow of water. When the water level starts dropping, the valve will open again, and the water will start to flow again,so no electricity needed. [Working Water Pressure]The float valve works with 0.2 to 10 bars water pressure,if water pressure is lower than 0.2 bars,the float valve will not suitable for using, it will not work. Working Temperature: 0~100 & 0-210F [Application]The float valve maintains the level at set point without a noticeable variance in level. This float valve was used to maintain the level in an exterior fountain, on a yard fountain,for a rain gutter garden project,using it to make an automatic shut-off for swimming pools,for Fountain Reservoir,for automatic chicken water drinker,for cattle watering drought,for rain collection barrels in the outdoors etc. Note: Raw material belt color is not fixed, do not accept the specified, does not affect the use of Colour:Photo Color Material:Stainless Steel Package Contents: 1x Float Valve set 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.