{"product_id":"copper-three-way-shut-off-valve-1-4-3-8-reverse-osmosis-water-adapter-1","title":"Copper 3-Way Shut-Off Valve 1\/4\" 3\/8\" RO Water Adapter","description":"\n\u003ch2\u003eCopper Three-Way Shut-Off Valve for Reverse Osmosis \u0026amp; Water Supply Lines\u003c\/h2\u003e\n\u003cp\u003eUpgrade your home plumbing with this precision-crafted \u003cstrong\u003ecopper three-way shut-off valve\u003c\/strong\u003e, designed for seamless integration with reverse osmosis (RO) systems, hot and cold water supply lines, and general household plumbing. Compatible with both \u003cstrong\u003e1\/4\" and 3\/8\" threaded connections\u003c\/strong\u003e, this versatile adapter makes it easy to control water flow with confidence and reliability.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose This Copper Shut-Off Valve?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Copper Construction:\u003c\/strong\u003e Solid copper body offers exceptional durability, corrosion resistance, and long-lasting performance in both hot and cold water applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree-Way Design:\u003c\/strong\u003e Allows flexible water routing — control, divert, or shut off flow between multiple lines without additional fittings or adapters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Fit:\u003c\/strong\u003e Threaded male connections in 1\/4\" and 3\/8\" sizes make this valve compatible with most standard RO systems, faucets, and water supply lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Up to 850 kPa:\u003c\/strong\u003e Built to handle typical household water pressures safely and reliably.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Straightforward threaded connection — no specialist tools required. Perfect for DIY plumbing upgrades and replacements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Ideal for reverse osmosis water filtration systems, kitchen faucets, bathroom fixtures, refrigerator water lines, and more.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Copper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Threaded (Male)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Sizes:\u003c\/strong\u003e 1\/4\" and 3\/8\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pressure:\u003c\/strong\u003e \u0026lt;850 kPa\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Hot \u0026amp; Cold Water, Reverse Osmosis Systems, Household Plumbing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Concern Chemicals:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReverse osmosis (RO) water filtration system installations\u003c\/li\u003e\n  \u003cli\u003eKitchen and bathroom faucet water supply connections\u003c\/li\u003e\n  \u003cli\u003eRefrigerator and ice maker water line hookups\u003c\/li\u003e\n  \u003cli\u003eGeneral household plumbing maintenance and upgrades\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\/1-5l-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  \u003cli\u003e\u003ca href=\"\/products\/1-2l-smart-electric-dehumidifier-remote-control-anion-air-purifier\"\u003e1.2L Smart Electric Dehumidifier with Remote \u0026amp; Anion Purifier\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAuthoritative Resource\u003c\/h3\u003e\n\u003cp\u003eFor guidance on safe drinking water systems and plumbing standards, visit the \u003ca href=\"https:\/\/www.epa.gov\/watersense\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Environmental Protection Agency (EPA) – WaterSense\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes does this copper three-way shut-off valve fit?\u003c\/h4\u003e\n\u003cp\u003eA: This valve is compatible with both 1\/4\" and 3\/8\" threaded (male) connections, making it suitable for most standard reverse osmosis systems, household faucets, and water supply lines.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this shut-off valve be used with both hot and cold water lines?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the solid copper construction makes this valve suitable for use with both hot and cold water supply lines, up to a maximum pressure of 850 kPa.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this valve easy to install without a plumber?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The standard threaded connection design allows for straightforward DIY installation using basic hand tools. Simply thread it onto your existing water supply line for a secure, leak-resistant fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this valve safe for use in drinking water or reverse osmosis filtration systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the valve contains no high-concern chemicals and is made from solid copper, which is a widely accepted material in household plumbing and water filtration applications.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes does this copper three-way shut-off valve fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This valve is compatible with both 1\/4\\\" and 3\/8\\\" threaded (male) connections, making it suitable for most standard reverse osmosis systems, household faucets, and water supply lines.\"}}, {\"@type\": \"Question\", \"name\": \"Can this shut-off valve be used with both hot and cold water lines?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the solid copper construction makes this valve suitable for use with both hot and cold water supply lines, up to a maximum pressure of 850 kPa.\"}}, {\"@type\": \"Question\", \"name\": \"Is this valve easy to install without a plumber?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The standard threaded connection design allows for straightforward DIY installation using basic hand tools. 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