{"product_id":"dn15-1-2-auto-fill-float-ball-valve-water-level-control","title":"DN15 1\/2\" Auto Fill Float Ball Valve – Water Level Control","description":"\n\u003ch2\u003eDN15 1\/2\" Automatic Float Ball Valve – Adjustable Water Level Control\u003c\/h2\u003e\n\u003cp\u003eKeep any water tank, trough, or reservoir perfectly filled — automatically. This DN15 1\/2\" plastic float ball valve uses a proven hydraulic-mechanical design to open and close water flow based on the current water level, with \u003cstrong\u003ezero electricity required\u003c\/strong\u003e. When the water drops, the float arm descends and opens the valve; when the desired level is reached, the rising float closes it again — preventing overflow and wasted water every time.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e360° adjustable float arm\u003c\/strong\u003e lets you fine-tune the target water level without any tools, making installation fast and flexible for a wide range of tank sizes and configurations. Made in Mainland China from high-quality ABS plastic, it is lightweight yet durable and handles normal cold-water applications up to 60 °C and pressures up to 0.6 MPa.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/2\" (DN15) male thread, 20 mm outer diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFloat Ball Size:\u003c\/strong\u003e 96 mm length × 39.5 mm diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTotal Length:\u003c\/strong\u003e 198 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality ABS plastic\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\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\u003eOperation:\u003c\/strong\u003e Fully mechanical — no electricity needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Side-mounted \/ tank wall installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 1 × Float Ball Valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere Can You Use It?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHousehold \u0026amp; commercial water tanks \/ water towers\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 and poultry water troughs\u003c\/li\u003e\n  \u003cli\u003eSmall water storage containers and cisterns\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Float Valve?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eElectricity-free operation\u003c\/strong\u003e — works purely by hydraulics, saving energy\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eAuto shut-off \u0026amp; anti-overflow\u003c\/strong\u003e — prevents spillage and water waste\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e360° adjustable arm\u003c\/strong\u003e — set the exact water level you need\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eUniversal 1\/2\" thread\u003c\/strong\u003e — fits most standard tank fittings\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact \u0026amp; lightweight\u003c\/strong\u003e — easy to install without professional help\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-pc-water-faucet-tap-knob-type-plastic-outdoor-water-faucet-tap-replacement-for-water-tank-bucket-for-wine-bottle-juice-bottle\"\u003e1 PC Knob-Type Plastic Outdoor Water Faucet Tap Replacement for Water Tanks \u0026amp; Buckets\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-400cm-sealing-tape-faucet-sealing-tape-oil-free-leak-proof-water-pipe-gas-pipeline-sealing-tape\"\u003e1PC 400cm Sealing Tape – Leak-Proof Water Pipe \u0026amp; Faucet Seal\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-multi-use-faucet-bubbler-wrenches-6-sizes-sink-wrenches-detach-tool-for-kitchen-bathroom-faucet-parts-repair-spanner\"\u003e1PC Multi-Use Faucet Bubbler Wrench Set – 6 Sizes for Kitchen \u0026amp; Bathroom Repair\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the DN15 float ball valve require electricity or batteries to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No. This float ball valve operates entirely on hydraulic-mechanical principles. The rising and falling of the float arm opens and closes the valve automatically — no electricity, batteries, or wiring needed whatsoever.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I adjust the water level this valve fills to?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The float arm features a 360° adjustable design, allowing you to bend or reposition the arm to set the precise water level you want. No special tools are required for adjustment.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What thread size does this valve use, and how do I install it?\u003c\/h4\u003e\n\u003cp\u003eA: The valve uses a standard 1\/2\" (DN15) male thread with a 20 mm outer diameter. It is designed for side-mounted \/ tank wall installation — simply drill or use the existing 1\/2\" port on your tank wall and thread the valve in securely. Use PTFE (thread seal) tape on the threads for a watertight connection.\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 maximum working temperature of 60 °C. It is not recommended for hot water or steam applications.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the DN15 float ball valve require electricity or batteries to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This float ball valve operates entirely on hydraulic-mechanical principles. The rising and falling of the float arm opens and closes the valve automatically — no electricity, batteries, or wiring needed whatsoever.\"}}, {\"@type\": \"Question\", \"name\": \"Can I adjust the water level this valve fills to?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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