【HIGH QUALITY】: Floating ball valve is made of high quality PP material, durable. 【PERFECT DESIGN】: Effectively increase water output, thread is about 1/2in, no electricity, automatic control. The float must be installed vertically. If installing from the top, an elbow will need to be connected to the float and inlet line The water supply line must be fixed on a horizontal surface, and the water levels control must be connected to the water inlet. 【FEATURE】: Lightweight, easy to install, wear resistant, heat resistant, applicable temperature is 0-70 degree. 【FUNCTION】: When the water level of the water tower drops, the float in the valve sinks to drive the lever to open the hole of the valve body, and the sealing surface of the control valve sinks under the water pressure to open, and the water flows out from the control valve. 【APPLICABLE】: Suitable for water tank, water tower, swimming pool, solar energy, toilet, hot water boiler, etc. Specification: Material: PP Size Chart: 7.8cmx5.1cm / 3.07inchx2.01inch Package Includes: 1 Set Float Valve (4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.