{"product_id":"copper-three-way-shut-off-valve-1-4-3-8-reverse-osmosis-water-adapter","title":"Copper 3-Way Shut-Off Valve 1\/4\" \u0026 3\/8\" | RO Water Adapter","description":"\u003ch2\u003eCopper Three-Way Shut-Off Valve for Reverse Osmosis \u0026amp; Water Supply Systems\u003c\/h2\u003e\n\u003cp\u003eUpgrade your water filtration setup with this precision-forged \u003cstrong\u003ecopper three-way shut-off valve\u003c\/strong\u003e. Designed to fit both \u003cstrong\u003e1\/4\" and 3\/8\" threaded connections\u003c\/strong\u003e, this versatile adapter is ideal for reverse osmosis (RO) systems, hot and cold water lines, and general plumbing applications. The hexagon head design allows for easy tightening with standard tools, while the forged copper construction ensures long-lasting durability and reliable leak-free performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Premium forged copper — corrosion-resistant and built for lasting durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits 1\/4\" and 3\/8\" threaded connections (male, equal shape)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree-Way Design:\u003c\/strong\u003e Allows simultaneous control of multiple water lines from a single valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pressure Rating:\u003c\/strong\u003e \u0026lt;850 kPa — suitable for standard residential water supply systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Code:\u003c\/strong\u003e Hexagon — easy to install and tighten with a wrench\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Threaded — secure, no-slip fit for hot and cold water lines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Reverse osmosis systems, water purifiers, under-sink plumbing, butler\/water supply adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Manufactured without harmful substances for safe water delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Valve?\u003c\/h3\u003e\n\u003cp\u003eWhether you're installing a new reverse osmosis filtration system or replacing a worn shut-off valve in an existing setup, this three-way copper valve delivers the precision engineering your plumbing deserves. The forged copper body resists corrosion from both hot and cold water, making it a smart long-term investment for your home or office water supply.\u003c\/p\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\u003eCopper (Forged)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThreaded (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHexagon\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEqual\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;850 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4\" \u0026amp; 3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRO Systems, Hot \u0026amp; Cold Water Lines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-6l-304-stainless-steel-electric-kettle-auto-shutoff-keep-warm\"\u003e1.6L 304 Stainless Steel Electric Kettle | Auto Shut-Off \u0026amp; Warm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-5l-handheld-steam-cleaner-touch-screen-1800w-ce-certified\"\u003e1.5L Handheld Steam Cleaner Touch Screen 1800W | CE Certified\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on safe drinking water systems and water filtration standards, 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 pipe sizes does this three-way copper shut-off valve fit?\u003c\/h4\u003e\n\u003cp\u003eA: This valve is designed to fit both 1\/4\" and 3\/8\" threaded connections, making it compatible with a wide range of standard reverse osmosis systems and water supply lines.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this copper shut-off valve suitable for both hot and cold water?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the forged copper construction is rated for both hot and cold water lines, and the valve handles pressures up to 850 kPa, covering typical residential water supply pressures.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I install this three-way valve on my RO system?\u003c\/h4\u003e\n\u003cp\u003eA: The hexagon head design allows you to use a standard wrench for installation. Simply thread the valve into your existing 1\/4\" or 3\/8\" connection points on your reverse osmosis or water supply adapter — no special tools required.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the copper material safe for drinking water use?\u003c\/h4\u003e\n\u003cp\u003eA: The valve is manufactured without high-concern chemicals and is intended for use in drinking water supply systems. Copper is a widely accepted material for potable water plumbing fittings.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What pipe sizes does this three-way copper shut-off valve fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This valve is designed to fit both 1\/4\\\" and 3\/8\\\" threaded connections, making it compatible with a wide range of standard reverse osmosis systems and water supply lines.\"}}, {\"@type\": \"Question\", \"name\": \"Is this copper shut-off valve suitable for both hot and cold water?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the forged copper construction is rated for both hot and cold water lines, and the valve handles pressures up to 850 kPa, covering typical residential water supply pressures.\"}}, {\"@type\": \"Question\", \"name\": \"How do I install this three-way valve on my RO system?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The hexagon head design allows you to use a standard wrench for installation. 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Copper is a widely accepted material for potable water plumbing fittings.\"}}]}\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\": \"Kitchen \u0026 Dining\", \"item\": \"https:\/\/oasis-select.com\/collections\/kitchen-dining\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Copper 3-Way Shut-Off Valve 1\/4\\\" \u0026 3\/8\\\" | RO Water Adapter\", \"item\": \"https:\/\/oasis-select.com\/products\/copper-three-way-shut-off-valve-1-4-3-8-reverse-osmosis-water-adapter\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"2point Conjoined nut \/ Three-way valve \/ Electroplated copper","offer_id":47746391965801,"sku":"14:201441374#2point Conjoined nut;200232261:4#Electroplated copper;5:4#Three-way valve","price":48.3,"currency_code":"USD","in_stock":true},{"title":"2point Quick connect \/ Three-way valve \/ Electroplated copper","offer_id":47746391998569,"sku":"14:200006399#2point Quick connect;200232261:4#Electroplated copper;5:4#Three-way valve","price":48.3,"currency_code":"USD","in_stock":true},{"title":"3point Conjoined nut \/ Three-way valve \/ Electroplated copper","offer_id":47746392031337,"sku":"14:201441572#3point Conjoined nut;200232261:4#Electroplated copper;5:4#Three-way valve","price":48.3,"currency_code":"USD","in_stock":true},{"title":"3point Quick connect \/ Three-way valve \/ Electroplated copper","offer_id":47746392064105,"sku":"14:200844061#3point Quick connect;200232261:4#Electroplated copper;5:4#Three-way valve","price":48.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Se7f18a1f21e24916ac74db203c53edadV.webp?v=1783056364","url":"https:\/\/oasis-select.com\/products\/copper-three-way-shut-off-valve-1-4-3-8-reverse-osmosis-water-adapter","provider":"Oasis Select","version":"1.0","type":"link"}