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SS-304 Heavy Duty Float Valve (commonly known as a mechanical ballcock valve or water level control valve).🔍 Technical Markings Breakdown 1/2'' to 4" BSP: Denotes a 1/2'' to 4''-inch nominal pipe connection size utilizing British Standard Pipe parallel or tapered threads.SS-304: Confirms that the main mechanical valve block, structural lever arm, and hollow float ball are all manufactured from 304 Grade Stainless Steel, providing excellent rust and corrosion resistance.FLOAT-VALVE: Explicitly defines its function as an automatic mechanical level-controller.⚙️ How It WorksBuoyancy Driven: The large, hollow stainless steel sphere floats on top of the liquid inside a tank or reservoir.Automatic Closure: As the liquid level rises, the floating ball moves upward, lifting the mechanical lever arm. This action forces an internal piston or plug tightly against the valve seat, cutting off the incoming water supply.Automatic Supply: When the liquid level drops, the ball sinks, pulling the lever down and reopening the valve to refill the tank automatically without requiring external sensors, wiring, or electricity.💡 Core Application AdvantagesHigh Flow Capacity: The 2-inch port layout allows for high-volume fluid transfer, ideal for rapidly refilling massive storage vessels.All-Metal Durability: Unlike standard residential brass or plastic float valves, the all-stainless construction withstands chemical treatments, high water pressures, and mechanical stress without bending or breaking.Thread Protection: The yellow plastic caps on the ends protect the critical female inlet and outlet threads from transport damage or debris accumulation before field installation.If you are setting this up, let me know what type of tank (e.g., overhead water tank, cooling tower basin, or industrial chemical sump) you are mounting this inside. I can also help you calculate the clearance space or height parameters needed for the float arm to swing freely!