{"product_id":"copper-half-inch-one-way-check-valve-anti-backflow-threaded","title":"Copper 1\/2\" One-Way Check Valve – Anti-Backflow Threaded","description":"\n\u003ch2\u003eCopper 1\/2\" One-Way Check Valve – Reliable Anti-Backflow Protection\u003c\/h2\u003e\n\u003cp\u003eKeep your plumbing system flowing in the right direction with this heavy-duty \u003cstrong\u003eCopper One-Way Check Valve\u003c\/strong\u003e. Designed for 1\/2\" (4-point) threaded connections, this male-threaded valve automatically prevents water from reversing direction, protecting your water heater, toilet supply lines, bathroom pipes, and water meters from backflow and pressure surges. Built from solid copper for lasting durability and corrosion resistance, it's a smart, low-maintenance upgrade for any home plumbing setup.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality solid copper for superior durability and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Threaded (male) – 1\/2\" (4-point \/ DN15) for easy installation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-Way Flow:\u003c\/strong\u003e Automatically blocks reverse water flow, preventing backflow and contamination\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pressure Rating:\u003c\/strong\u003e Up to 850 kPa – suitable for standard residential and light commercial water systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Ideal for water heaters, toilet supply lines, bathroom pipes, garden hose lines, and water meters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Easy to install in tight spaces without specialized tools\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Free from harmful substances for safe use in potable water systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eThreaded (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e1\/2\" (4 Points \/ DN15)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u0026lt; 850 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eValve Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eOne-Way Check Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBathroom and toilet water supply lines\u003c\/li\u003e\n  \u003cli\u003eWater heater inlet connections\u003c\/li\u003e\n  \u003cli\u003eWater meters and main supply lines\u003c\/li\u003e\n  \u003cli\u003eGarden irrigation and hose fittings\u003c\/li\u003e\n  \u003cli\u003eLight commercial plumbing applications\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\/1-inch-impact-rocker-sprinkler-adjustable-rotating-irrigation\"\u003e1-Inch Impact Rocker Sprinkler – Adjustable Rotating Irrigation\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-4w-solar-bird-bath-fountain-pump-garden-pond-fish-tank-1\"\u003e1.4W Solar Bird Bath Fountain Pump – Pond, Garden \u0026amp; Fish Tank\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on backflow prevention and safe drinking water practices, visit the \u003ca href=\"https:\/\/www.epa.gov\/ground-water-and-drinking-water\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. EPA Ground Water and Drinking Water resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size pipe does this copper check valve fit?\u003c\/h4\u003e\n\u003cp\u003eA: This check valve is designed for 1\/2\" (4-point, DN15) threaded male connections, which is one of the most common pipe sizes used in residential bathroom, toilet, and water heater plumbing systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Will this check valve work with my water heater?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This copper one-way check valve is specifically compatible with water heater inlet lines. It prevents hot water or pressure from flowing back into the cold water supply, helping protect your system and maintain consistent performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum water pressure this valve can handle?\u003c\/h4\u003e\n\u003cp\u003eA: This valve is rated for pressures of up to 850 kPa, which covers the vast majority of standard residential and light commercial water supply systems. Always verify your system's pressure before installation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this valve safe for use in potable (drinking) water lines?\u003c\/h4\u003e\n\u003cp\u003eA: The valve is made from solid copper and contains no high-concern chemicals, making it suitable for use in standard water supply lines. Always consult local plumbing codes and regulations for your specific application.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size pipe does this copper check valve fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This check valve is designed for 1\/2\\\" (4-point, DN15) threaded male connections, which is one of the most common pipe sizes used in residential bathroom, toilet, and water heater plumbing systems.\"}}, {\"@type\": \"Question\", \"name\": \"Will this check valve work with my water heater?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This copper one-way check valve is specifically compatible with water heater inlet lines. It prevents hot water or pressure from flowing back into the cold water supply, helping protect your system and maintain consistent performance.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum water pressure this valve can handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This valve is rated for pressures of up to 850 kPa, which covers the vast majority of standard residential and light commercial water supply systems. Always verify your system's pressure before installation.\"}}, {\"@type\": \"Question\", \"name\": \"Is this valve safe for use in potable (drinking) water lines?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The valve is made from solid copper and contains no high-concern chemicals, making it suitable for use in standard water supply lines. Always consult local plumbing codes and regulations for your specific application.\"}}]}\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:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home \u0026 Living\", \"item\": \"https:\/\/oasis-select.com\/collections\/home-living\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Copper 1\/2\\\" One-Way Check Valve – Anti-Backflow Threaded\", \"item\": \"https:\/\/oasis-select.com\/products\/copper-half-inch-one-way-check-valve-anti-backflow-threaded\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"Female to Male \/ Full copper 4 points","offer_id":47746540798057,"sku":"14:200006399#Female to Male;5:4#Full copper 4 points","price":33.52,"currency_code":"USD","in_stock":true},{"title":"Male to Male \/ Full copper 4 points","offer_id":47746540830825,"sku":"14:200844061#Male to Male;5:4#Full copper 4 points","price":33.52,"currency_code":"USD","in_stock":true},{"title":"Male to Female \/ Full copper 4 points","offer_id":47746540863593,"sku":"14:350686#Male to Female;5:4#Full copper 4 points","price":33.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/S691a5565b6e9433a9d07b4b457143417o.webp?v=1783056945","url":"https:\/\/oasis-select.com\/products\/copper-half-inch-one-way-check-valve-anti-backflow-threaded","provider":"Oasis Select","version":"1.0","type":"link"}