{"product_id":"dn15-half-inch-adjustable-float-valve-automatic-water-level-control-tank","title":"DN15 1\/2\" Adjustable Float Valve – Auto Water Level Control","description":"\u003ch2\u003eDN15 1\/2\" Plastic Float Valve – Automatic Water Level Control for Tanks \u0026amp; Hydroponics\u003c\/h2\u003e\n\u003cp\u003eKeep your water tank, reservoir, or hydroponic system perfectly filled — automatically. This \u003cstrong\u003eDN15 1\/2\" adjustable float ball valve\u003c\/strong\u003e uses a simple hydraulic mechanism to maintain the ideal water level with zero electricity required. When the water rises to the set level, the float arm shuts off flow; when it drops, flow resumes. It's a reliable, set-and-forget solution for home, garden, and agricultural use.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic Water Level Control\u003c\/strong\u003e – Hydraulic, mechanical operation; no power source needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° Adjustable Arm\u003c\/strong\u003e – Rotate the float arm to dial in your exact desired water level\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1\/2\" DN15 Male Thread\u003c\/strong\u003e – 20mm outer diameter for standard tank wall or side-mounted installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality ABS Plastic Body\u003c\/strong\u003e – Lightweight, corrosion-resistant, and durable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Overflow Auto Shut-Off\u003c\/strong\u003e – Prevents tank overflow and water waste\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCold Water Use\u003c\/strong\u003e – Working temperature range: 0–60°C; maximum working pressure: ≤ 0.6 MPa\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size\u003c\/strong\u003e – Total length 198mm; float ball 96mm × 39.5mm diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGray valve body with white float ball\u003c\/strong\u003e – Easy to spot in tanks and reservoirs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-quality ABS Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/2\" DN15 Male Thread (20mm OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFloat Ball Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e96mm × 39.5mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e198mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 0.6 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–60°C (cold water only)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSide-mounted \/ tank wall installation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMechanical, no electricity required\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGray valve body + white float ball\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × Float Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHydroponics \u0026amp; aquaponics reservoirs\u003c\/li\u003e\n  \u003cli\u003eGarden water tanks \u0026amp; water towers\u003c\/li\u003e\n  \u003cli\u003eAquariums \u0026amp; fish tanks\u003c\/li\u003e\n  \u003cli\u003eRO (reverse osmosis) water systems\u003c\/li\u003e\n  \u003cli\u003eLivestock water troughs\u003c\/li\u003e\n  \u003cli\u003eSmall water storage containers \u0026amp; cisterns\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/watering-hoses-sprayers\"\u003eBrowse our Watering, Hoses \u0026amp; Sprayers\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/2-pack-adjustable-wall-mount-curtain-rod-brackets-metal\"\u003e2-Pack Adjustable Wall-Mount Brackets – Metal\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/34-compartment-double-sided-hardware-storage-box-removable-dividers\"\u003e34-Compartment Double-Sided Hardware Storage Box \u0026amp; Dividers\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size fitting does this float valve use, and will it fit my tank?\u003c\/h4\u003e\n\u003cp\u003eA: This float valve uses a standard 1\/2\" DN15 male thread with a 20mm outer diameter. It is designed for side-mounted or tank wall installation, fitting most standard water tanks, reservoirs, and agricultural troughs that accept a 1\/2\" threaded fitting.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this float valve require electricity or batteries to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No. The DN15 float valve works entirely on hydraulic mechanical principles — the buoyancy of the float ball opens and closes the valve automatically as the water level changes. No electricity, wiring, or batteries are needed.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this float valve with hot water or high-pressure 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 and a maximum working pressure of ≤ 0.6 MPa. It is not suitable for hot water, steam, or high-pressure applications beyond these limits.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I adjust the water level with this float valve?\u003c\/h4\u003e\n\u003cp\u003eA: The float arm features a 360° rotation adjustment, allowing you to set the float ball position to control the exact water level you need. Simply rotate the arm to raise or lower the cutoff point before installing in your tank.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size fitting does this float valve use, and will it fit my tank?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This float valve uses a standard 1\/2\\\" DN15 male thread with a 20mm outer diameter. It is designed for side-mounted or tank wall installation, fitting most standard water tanks, reservoirs, and agricultural troughs that accept a 1\/2\\\" threaded fitting.\"}}, {\"@type\": \"Question\", \"name\": \"Does this float valve require electricity or batteries to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The DN15 float valve works entirely on hydraulic mechanical principles — the buoyancy of the float ball opens and closes the valve automatically as the water level changes. No electricity, wiring, or batteries are needed.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this float valve with hot water or high-pressure systems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This valve is designed for cold water use only, with a working temperature range of 0–60°C and a maximum working pressure of ≤ 0.6 MPa. It is not suitable for hot water, steam, or high-pressure applications beyond these limits.\"}}, {\"@type\": \"Question\", \"name\": \"How do I adjust the water level with this float valve?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The float arm features a 360° rotation adjustment, allowing you to set the float ball position to control the exact water level you need. Simply rotate the arm to raise or lower the cutoff point before installing in your tank.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/sdf9i0-k1.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Watering, Hoses \u0026 Sprayers\", \"item\": \"https:\/\/sdf9i0-k1.myshopify.com\/collections\/watering-hoses-sprayers\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"DN15 1\/2\\\" Adjustable Float Valve – Auto Water Level Control\", \"item\": \"https:\/\/sdf9i0-k1.myshopify.com\/products\/dn15-half-inch-adjustable-float-valve-automatic-water-level-control-tank\"}]}\u003c\/script\u003e","brand":"QXL","offers":[{"title":"Black","offer_id":46964063043783,"sku":"35:201451280#Black","price":14.99,"currency_code":"USD","in_stock":true},{"title":"Gray","offer_id":46964063076551,"sku":"35:201452347#Gray","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/8314\/9255\/files\/S9d2e54b8ff664573b2c4ca3d2a1be606E.webp?v=1786055932","url":"https:\/\/qxlcustomerservice.com\/products\/dn15-half-inch-adjustable-float-valve-automatic-water-level-control-tank","provider":"QXL","version":"1.0","type":"link"}