{"product_id":"b-k-proline-3-4-in-cts-sizes-x-3-4-in-d-cts-brass-coupling","title":"B\u0026K ProLine 3\/4 in. CTS Sizes X 3\/4 in. D CTS Brass Coupling","description":"\u003cdiv\u003e\n\u003cp\u003eDiscover the reliability of the B\u0026amp;K ProLine 3\/4 in. CTS to 3\/4 in. CTS Brass Coupling—a purpose-built connector crafted for durable, lead-free copper tube installations. Designed to meet everyday plumbing demands, this brass coupling delivers a solid, corrosion-resistant joint that you can trust in your potable water system.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass (lead-free)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnd 1:\u003c\/strong\u003e 3\/4 in CTS\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnd 2:\u003c\/strong\u003e 3\/4 in CTS\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum pressure:\u003c\/strong\u003e 125 psi\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum temperature:\u003c\/strong\u003e 210°F\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Coupling\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e B\u0026amp;K ProLine\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eANSI certified:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this ProLine coupling stands out\u003c\/h2\u003e\n\u003cp\u003eLead-free brass matters. This coupling is designed for safe, long-lasting connections in residential and light commercial plumbing, helping reduce health risks and corrosion over time. Its CTS (Copper Tube Size) ends ensure a precise fit with 3\/4 in. copper tubing, making it a dependable choice for repair work, extensions, or new runs without compromising flow or pressure performance.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eRepairing a leaking 3\/4 in. copper line in kitchens, bathrooms, or laundry rooms\u003c\/li\u003e \u003cli\u003eExtending a 3\/4 in. CTS copper run when updating or reconfiguring an installation\u003c\/li\u003e \u003cli\u003eReplacing aging connectors in potable water systems where lead-free compliance is important\u003c\/li\u003e \u003cli\u003eDIY projects and professional jobs alike, where a simple, reliable CTS-to-CTS connection is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical guidance for using this coupling\u003c\/h2\u003e\n\u003cp\u003eBefore installation, ensure both tubed ends are clean and free of burrs, and that the tubing diameter matches the 3\/4 in. CTS specification. Although ANSI certification isn’t listed for this specific part, it’s well-suited for typical domestic water service and light commercial applications within its 125 psi\/210°F rating. Always verify local code compliance and pair with compatible fittings as part of a well-planned assembly.\u003c\/p\u003e \u003ch2\u003eDurability and performance you can rely on\u003c\/h2\u003e\n\u003cp\u003eThe brass construction provides robust resistance to corrosion and wear in everyday water systems, while the 3\/4 in. CTS ends deliver consistent, dependable engagement across connections. The 125 psi maximum pressure and 210°F maximum temperature make this coupling suitable for standard residential water lines and many non-thermally extreme piping scenarios.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"B\u0026K","offers":[{"title":"Default Title","offer_id":52205046923538,"sku":"4343380","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/4343380_A.eps_High.jpg?v=1776467654","url":"https:\/\/nationalhardwaregroup.com\/products\/b-k-proline-3-4-in-cts-sizes-x-3-4-in-d-cts-brass-coupling","provider":"National Hardware Group","version":"1.0","type":"link"}