{"product_id":"dn15-half-inch-adjustable-float-ball-valve-auto-water-level-control","title":"DN15 1\/2\" Adjustable Float Valve – Auto Water Level Control","description":"\n\u003ch2\u003eDN15 1\/2\" Adjustable Float Ball Valve – Automatic Water Level Control\u003c\/h2\u003e\n\u003cp\u003eKeep your water tank, reservoir, or aquarium at the perfect level — automatically. This DN15 (1\/2 inch) plastic float ball valve uses a simple, proven hydraulic-mechanical design to open and close water flow without any electricity. When the water level rises to the set point, the buoyant float arm pushes the valve shut, stopping the flow. As the level drops, the valve reopens. It's hands-free water level management that works 24\/7.\u003c\/p\u003e\n\n\u003cp\u003eWith a 360° adjustable float arm, you can fine-tune the exact shut-off level to suit your specific tank or trough. The lightweight, durable ABS plastic body resists corrosion and holds up to continuous cold-water use, making it a reliable long-term addition to any garden, hydroponics setup, livestock watering station, or household storage tank.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Shut-Off:\u003c\/strong\u003e Mechanically stops water flow when the desired level is reached — no electricity, no timers, no sensors needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° Adjustable Arm:\u003c\/strong\u003e Rotate and set the float arm to control your exact desired water level with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Overflow Design:\u003c\/strong\u003e Prevents overfilling and water waste in tanks, towers, and reservoirs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard 1\/2\" Male Thread (DN15):\u003c\/strong\u003e 20mm outer diameter — fits most standard tank wall fittings for fast, straightforward installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable ABS Plastic Construction:\u003c\/strong\u003e Lightweight, corrosion-resistant, and rated for cold water use (0–60°C) at pressures up to 0.6 MPa.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Power Required:\u003c\/strong\u003e Fully mechanical, hydraulic-controlled operation — works anywhere water flows.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide-Mount \/ Tank Wall Installation:\u003c\/strong\u003e Designed for easy side-mounted installation on most standard tanks and containers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Float Ball Valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality ABS Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/2\" (DN15) male thread, 20mm outer diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFloat Ball Size:\u003c\/strong\u003e 96mm length × 39.5mm diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Length:\u003c\/strong\u003e 198mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e ≤ 0.6 MPa\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking Temperature:\u003c\/strong\u003e 0–60°C (cold water only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Gray valve body + White float ball\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Side-mounted \/ tank wall\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Float Ball Valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHydroponics reservoirs and nutrient tanks\u003c\/li\u003e\n  \u003cli\u003eGarden and agricultural water storage tanks\u003c\/li\u003e\n  \u003cli\u003eWater towers and cisterns\u003c\/li\u003e\n  \u003cli\u003eAquariums and fish ponds\u003c\/li\u003e\n  \u003cli\u003eRO (reverse osmosis) water systems\u003c\/li\u003e\n  \u003cli\u003eLivestock watering troughs\u003c\/li\u003e\n  \u003cli\u003eSmall water storage containers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe water system maintenance and best practices, visit the \u003ca href=\"https:\/\/www.epa.gov\/watersense\" target=\"_blank\" rel=\"noopener\"\u003eEPA WaterSense Program\u003c\/a\u003e for water efficiency tips and resources.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size pipe or tank fitting does this DN15 float valve connect to?\u003c\/h4\u003e\n\u003cp\u003eA: This float valve features a standard 1\/2 inch (DN15) male thread with a 20mm outer diameter. It is compatible with most standard tank wall fittings and side-mount connections used in home, garden, and agricultural water tanks.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the DN15 adjustable float valve require electricity to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No — this float ball valve is entirely mechanical and hydraulic-powered. It operates without any electricity, batteries, or electronic components, making it reliable in off-grid gardens, outdoor tanks, and remote livestock troughs.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I adjust the water level shut-off point on this float valve?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The float arm features a 360° adjustable design, allowing you to set and fine-tune the exact water level at which the valve closes. Simply rotate the arm to your desired angle and the valve will automatically shut off at that level.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this float valve suitable for hot water systems?\u003c\/h4\u003e\n\u003cp\u003eA: This valve is designed for cold water use only, with a working temperature range of 0–60°C (32–140°F). It is not recommended for hot water, steam, or high-temperature applications.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size pipe or tank fitting does this DN15 float valve connect to?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This float valve features a standard 1\/2 inch (DN15) male thread with a 20mm outer diameter. 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