{"product_id":"brass-check-valve-g1-2-internal-external-thread-anti-backflow-one-way","title":"Brass Check Valve G1\/2 Thread Anti-Backflow One-Way Valve","description":"\u003cp\u003eKeep your water lines flowing in the right direction with this \u003cstrong\u003eYellow Brass Check Valve\u003c\/strong\u003e featuring a G1\/2 internal-to-external thread connection. Built from durable yellow copper (brass), this one-way valve is engineered to prevent backflow in household plumbing systems — ideal for bathrooms, toilets, water heaters, and general piping applications.\u003c\/p\u003e\n\n\u003cp\u003eIts compact, reliable design makes installation straightforward with no specialist tools required. The threaded connection ensures a secure, leak-resistant fit, giving you confidence in your plumbing setup day after day.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality yellow copper (brass) — corrosion-resistant and built to last\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e G1\/2 internal (female) to G1\/2 external (male) thread\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e One-way valve — prevents backflow and protects your plumbing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Use:\u003c\/strong\u003e Suitable for bathrooms, toilets, water heaters, irrigation lines, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Standard thread size fits most residential plumbing connections\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Low-profile form factor fits in tight spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e G1\/2 (BSP)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Internal thread inlet × External thread outlet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Non-return \/ anti-backflow one-way check valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Yellow copper (brass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural brass \/ yellow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Is a Check Valve?\u003c\/h2\u003e\n\u003cp\u003eA check valve (also called a one-way or non-return valve) allows fluid to flow in one direction only. It automatically closes when flow reverses, protecting appliances, pipes, and water supplies from contamination or pressure-related backflow. For more information on plumbing safety and water quality, visit the \u003ca href=\"https:\/\/www.epa.gov\/watersense\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Environmental Protection Agency — WaterSense\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhere to Use This Valve\u003c\/h2\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\u003eGarden watering and irrigation systems\u003c\/li\u003e\n  \u003cli\u003eGeneral household plumbing upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: What thread size does this brass check valve use?\u003c\/h4\u003e\n\u003cp\u003eA: This check valve features a G1\/2 (BSP) thread — G1\/2 internal (female) on the inlet side and G1\/2 external (male) on the outlet side. This is a very common size used in residential bathroom and toilet water supply connections, making it compatible with most standard household plumbing fittings.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does an anti-backflow check valve work?\u003c\/h4\u003e\n\u003cp\u003eA: A check valve contains an internal mechanism (typically a spring-loaded ball or disc) that allows water to flow freely in one direction. When flow stops or attempts to reverse, the mechanism closes automatically, blocking the backflow. This protects your plumbing system, appliances, and water supply from contamination or pressure surges.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this valve suitable for both hot and cold water lines?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The brass (yellow copper) construction makes this check valve suitable for use on both hot and cold water supply lines found in standard residential plumbing applications, including bathrooms, toilets, and water heater connections.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What tools do I need to install this check valve?\u003c\/h4\u003e\n\u003cp\u003eA: Installation typically requires only an adjustable wrench or pipe wrench to hand-tighten the threaded connections. Apply PTFE (thread seal) tape to the threads before fitting for a secure, leak-free connection. Always turn off your water supply before beginning any plumbing work.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What thread size does this brass check valve use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This check valve features a G1\/2 (BSP) thread — G1\/2 internal (female) on the inlet side and G1\/2 external (male) on the outlet side. This is a very common size used in residential bathroom and toilet water supply connections, making it compatible with most standard household plumbing fittings.\"}}, {\"@type\": \"Question\", \"name\": \"How does an anti-backflow check valve work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A check valve contains an internal mechanism (typically a spring-loaded ball or disc) that allows water to flow freely in one direction. 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Always turn off your water supply before beginning any plumbing work.\"}}]}\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:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home \u0026 Living\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/home-living\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Brass Check Valve G1\/2 Thread Anti-Backflow One-Way Valve\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/brass-check-valve-g1-2-internal-external-thread-anti-backflow-one-way\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"1PC","offer_id":49709405634774,"sku":"14:200006151#1PC","price":10.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/S4eb053a331eb422e86c1f56df3349b6dH.webp?v=1785203049","url":"https:\/\/qmeboost.com\/products\/brass-check-valve-g1-2-internal-external-thread-anti-backflow-one-way","provider":"Qme","version":"1.0","type":"link"}