Packing quantity: 3 water tank float valves, the purpose is to reduce the water tank filling and inspection time, sealing effect and high pressure; use a smaller float control device, can withstand greater 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 above 180 degrees Size: The float valve has 1/2 NPT pipe thread, which is very common in the pipe world, and the thread size is about. 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 systems; no power or pump required, hand-tightened without leakage Wide range of uses: The tank float valve is suitable for ponds, chickens, livestock pools, aquariums, symbiosis of fish and vegetables, aquaculture, hydroponic reservoirs, and its adaptability is stronger than traditional metal float valves. Floating ball principle: The floating ball valve of the storage tank uses the floating 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 Drive: hydraulic control Colour: 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 Total length about 17.8cm Package Contents: 3 x float ball valve 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.