Description: 【No Electricity Required】: The inside type 1/2" automatic water level control valve operates without electricity, the automatic water level control is achieved when the water pressure exceeds 0.1kg 【Efficient Water Level Control】: This float valve is designed to automatically control water levels, ensuring your tanks and reservoirs are always at the optimal level without manual 【Compact Size】: Compact trough water leveler, will not take up too much space, easy to install. The water level control valve stop water flow once the desired level is reached, preventing overflow and conserving water 【Sturdy Construction】: The automatic water level control valve is made from premium nylon material, wear resistant, sturdy, not easy to break and ensures a long time to use 【Versatile Applications】: The water level control valve is suitable for water tanks, solar energy, auto pots, water towers, aquariums, swimming pools, etc Specification: Material: Nylon Size Chart:12.3cmx5.8cm/4.84inchx2.28inch Package Includes: 1 Set Automatic Water Level Control Valve Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.