Size: 0.75 inches. Material: Nylon PA66 + food-grade rubber. Automatic control, low water level self-replenishing, automatic complete water shut-off. No electricity, easy to use, long lifespan, low failure rate, saves water resources. Package contents: 1 x Water Level Control Valve. Item description: Features: - This valve is the replacement for the traditional float valve, which can be applied to various systems of high water tanks, swimming pools, water towers in industrial and civil construction, etc. - Automatic control, low water level self-replenishing, automatic complete water shut-off. - Four air inlets, large water volume. - Beautiful appearance, small size, practical, easy installation. - No electricity, easy to use, long lifespan, low failure rate, saves water - When the water level in the pool or tank drops, the valve body will flow down and then the pre-stage of the control valve will open. When the water pressure in the pipe affects, the sealing surface of the control valve will open. Finally, water will come out and vice versa. Specifications: Size: 0.75 inches Material: Nylon PA66 + Food-grade rubber Working pressure range: 1-10 kg (0.1-4 MPa) Usage: Clean water Applicable medium temperature: ≤70°C Medium high temperature resistance: 70°~120° Outlet diameter: G3/4 (Needs adapter) Package includes: 1 x Water Level Control Valve