Package: 3 water tank float valves, to reduce water tank filling and inspection time, sealing effect and high pressure; use a smaller float control, which can withstand higher fluid pressure. Adjustable arm: The miniature float valve has an adjustable arm made of sturdy ABS, which is durable, rust-proof and corrosion-resistant, and can be adjusted over 180 degrees. Size: The float valve has 1/2 NPT pipe thread, which is common in the piping world, and the thread size is approximately 3/4 inch (with standard gasket) to eliminate leakage. No power or pump required: The water float valve is suitable for low-pressure gravity water supply; no power or pump is required, hand-tightened without leakage. Wide range of uses: The tank float valve is suitable for ponds, chickens, livestock pools, aquariums, fish and vegetables, aquaculture, hydroponic reservoirs, and the adaptability is stronger than metal float valves. Float ball principle: The storage tank float ball valve uses the float ball principle to control the inlet and outlet water switches to achieve a constant water level effect, saving time and labor for manual inspection. Specification: Flow direction: 1 direction. Operation: hydraulic control. Color: gray, white. Material: plastic. Size: 17 x 4 x 4 cm / 6.69 x 1.57 x 1.57 inches. Line size: 1/2 inch, length approximately 17.8 cm. Package contents: 3 x float ball valve. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.