Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Automatic Water Level Control Float Valve: ensure optimal water levels effortlessly with our water float valve; The float valve does not need electricity; When the water level drops, the floating ball falls, and the water pressure in the water pipe is applied to open the plunger with the sealing silicone surface in the valve body, the valve body starts the water supply, when the water level rises, the floating ball floats, and the connecting rod drives the plunger, prevent water wastage Universal Dimensions: 1/2 inch water tank float valve with side water intake turning head, 3/4 inch screw hole sleeved on an elbow for use with 3/4 inch water pipes, become 3/4 inch side water intake; It can also become 3/4 inch upper water intake, easily catering to a multitude of applications; The interface should be wrapped with a rubber ring to prevent loosening and leakage; A filter need be applied at the water inlet to prevent sand and stones from clogging the float Wide Range of Applications: which are designed to maintain the water level in your water tanks, pools, water towers, water storage, livestock tanks and other containers; The automatic water level control valve need a water pressure better than 0.2 KG and a water pressure drop of more than 2 meters for the effect of automatic water stopping; The applicable water pressure range is 0.02-1.2MPA Material: Stainless steel colour: As shown Raw tape Colors are random, no specification accepted Package Contents: 3 packs x automatic water level control floating valves